L(+)-Tartaric Acid Diisopropyl Ester
Product Profile
Apply for Sample| Names | |
|---|---|
| Preferred IUPAC name | di(propan-2-yl) (2R,3R)-2,3-dihydroxybutanedioate |
| Other names | Diisopropyl L-tartrate L-(+)-Tartaric acid diisopropyl ester L-Di-isopropyl tartrate L-DIPT L-(+)-Diisopropyl tartrate |
| Pronunciation | /ˈel plʌs ˈtɑːrərɪk ˈæsɪd daɪ.aɪsəˈprəʊpɪl ˈɛstər/ |
| Identifiers | |
| CAS Number | 26546-38-7 |
| Beilstein Reference | 575572 |
| ChEBI | CHEBI:87160 |
| ChEMBL | CHEMBL1373234 |
| ChemSpider | 143184 |
| DrugBank | DB11288 |
| ECHA InfoCard | 03bcb0ab-6d99-3479-9432-565f7e4d2e20 |
| EC Number | 206-660-1 |
| Gmelin Reference | 73109 |
| KEGG | C18631 |
| MeSH | D015799 |
| PubChem CID | 6443283 |
| RTECS number | WW7875000 |
| UNII | FSM5N4Q665 |
| UN number | UN2529 |
| CompTox Dashboard (EPA) | DTXSID5070808 |
| Properties | |
| Chemical formula | C12H22O6 |
| Molar mass | 262.29 g/mol |
| Appearance | Colorless to pale yellow liquid |
| Odor | Odorless |
| Density | 1.072 g/cm³ |
| Solubility in water | Insoluble |
| log P | 0.62 |
| Acidity (pKa) | 2.98 |
| Basicity (pKb) | 1.15 |
| Magnetic susceptibility (χ) | -9.86×10⁻⁶ cm³/mol |
| Refractive index (nD) | 1.4140 |
| Viscosity | 10 mPa·s (20 °C) |
| Dipole moment | 2.93 D |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 207.6 J·mol⁻¹·K⁻¹ |
| Std enthalpy of combustion (ΔcH⦵298) | -3651.7 kJ/mol |
| Pharmacology | |
| ATC code | V03AB37 |
| Hazards | |
| Main hazards | Harmful if swallowed. Causes serious eye irritation. Causes skin irritation. |
| GHS labelling | GHS02, GHS07 |
| Pictograms | GHS02, GHS07 |
| Signal word | Warning |
| Hazard statements | H315: Causes skin irritation. H319: Causes serious eye irritation. |
| Precautionary statements | P210, P233, P240, P241, P242, P243, P280, P303+P361+P353, P370+P378 |
| Flash point | 181.2 °C |
| Lethal dose or concentration | LD50 Oral Rat 4360 mg/kg |
| LD50 (median dose) | LD50 (median dose): Rat oral 4300 mg/kg |
| NIOSH | WH0660000 |
| PEL (Permissible) | PEL (Permissible Exposure Limit) for L(+)-Tartaric Acid Diisopropyl Ester: not established |
| REL (Recommended) | 50-100 mg |
| Related compounds | |
| Related compounds | Tartaric Acid L(+)-Tartaric Acid Tartaric Acid Dimethyl Ester Tartaric Acid Diethyl Ester Tartaric Acid Dibutyl Ester D(-)-Tartaric Acid Diisopropyl Ester L(+)-Tartaric Acid Di-n-propyl Ester Diisopropyl Tartrate |
Chemical ID: CAS Formula HS Code Database
L(+)-Tartaric Acid Diisopropyl Ester
| Property | Manufacturer's Commentary |
|---|---|
| Product Name & IUPAC Name |
Common Name: L(+)-Tartaric Acid Diisopropyl Ester IUPAC Name: (2R,3R)-2,3-dihydroxybutanedioic acid diisopropyl ester |
| Chemical Formula |
C10H18O6 During process scale-up, analytical tests verify consistency of the empirical formula by quantitative analysis and NMR. Final structural assignment always aligns with optical purity and absolute configuration specified by the customer. |
| Synonyms & Trade Names |
L-(+)-Diisopropyl tartrate, Diisopropyl L-tartrate Naming conventions differ by geographic region or end-use, especially for pharmaceutical and chiral intermediate grades. End users in asymmetric synthesis or resolution processes frequently reference the L-(+)-enantiomer for clarity. Trade naming is not regulated, so synonym use is typically clarified in technical correspondence or purchase documentation. |
| HS Code & Customs Classification | HS Code allocation varies by national tariff schedules but is typically referenced under 2918.19 (Carboxylic acids with additional oxygen function, and their esters: other polycarboxylic acids and their esters). Classification often depends on declaration specifics—esters of tartaric acid can sometimes be grouped with related chiral building blocks or fine chemical intermediates, so correct description minimizes border clearance issues. Manufacturers support customs brokers with regulatory cross-references based on batch manifest and end-use application. |
Production & Industrial Handling Insights
Selection of raw materials focuses on verified enantiopure L(+) tartaric acid and high-purity isopropanol, as optical purity loss impacts downstream resolution activity in chiral synthesis. Process route typically involves acid-catalyzed esterification; control points emphasize anhydrous conditions and reaction temperature management to avoid racemization or diester/monoester ratio imbalance. Product grade varies: optical purity, residual acidity, and moisture level are controlled according to specification for each batch.
Impurity sources include raw material contaminants (notably residual mineral acids or lower alcohols), hydrolytic byproducts, and isomeric or over-esterified fractions. Purification usually involves extraction and vacuum distillation, with QC confirmation via chiral HPLC or polarimetry. In-process monitoring addresses both yield optimization and prevention of byproduct carryover.
Quality release criteria are set according to customer/regulatory specifications, frequently focusing on chiral purity, residual solvents, and physical state (clear colorless liquid or low-melting solid depending on storage). Batch records document analytical traceability throughout the manufacturing cycle, as downstream end use in pharmaceutical or fine chemical synthesis requires lot-specific certification.
Practical impact of storage: product quality depends on moisture exclusion, as hydrolytic breakdown can occur if the packaging is compromised. Application-specific requirements sometimes dictate stabilizer addition or alternative packaging materials to minimize risk during extended storage or global shipment.
L(+)-Tartaric Acid Diisopropyl Ester: Technical Properties, Manufacturing Process & Safety Guidelines
Physical & Chemical Properties
Physical State & Appearance
Production yields a colorless to pale yellow liquid, though minor shade variations appear across batches depending on process cleanliness and feedstock color grades. Odor remains faint, with a mild ester-like note typical for dialkyl esters. Solidification, if observed, results from prolonged refrigeration or impure lots, which should not occur under controlled storage. Melting and boiling points shift between grades and are influenced by isopropanol residue and water content. Industrial operators monitor these physical marks during QC to validate product identity and batch profile. Flash point and density fall within a narrow range that depends primarily on residual solvent content and purity achieved in finishing.
Chemical Stability & Reactivity
Ester group hydrolyzes in the presence of moisture, base, or acid. Shelf life depends on exclusion of water and control of storage atmosphere. Polymerization or decomposition is not typical in unstressed storage, though exposure to high heat, strong alkali, or acid catalysts accelerates hydrolysis. Reactivity in downstream operations relies on strict absence of traces of mineral acid or strong base during delivery and storage; otherwise, yellowing and turbidity indicate side reaction products which must be monitored closely.
Solubility & Solution Preparation
Solubility profile ties to the ester chain: high solubility in many organic solvents such as ethers, alcohols, and esters, negligible in water. Operators preparing solutions for chemical synthesis adjust solvent choice and loading temperature by downstream process conditions—variability in solution stability comes primarily from water content and the presence of acids or bases in the environment. QA regularly audits concentrate preparation protocols for consistent performance across bulk lots.
Technical Specifications & Quality Parameters
Specification Table by Grade
| Parameter | Standard-Grade | High-Purity/Custom Grade |
|---|---|---|
| Appearance | Colorless to pale yellow liquid | Transparent, colorless liquid |
| Assay (by GC/HPLC) | Typical values depend on grade & customer requirement | Defined according to application-specific grade |
| Water Content (KF) | Process dependent, monitored each batch | Minimized by controlled drying and process |
| Residual Isopropanol | Process and specification controlled | Depends on end-use and customer requirement |
| Total Impurities | Profile varies by route and purification | Maximally restricted for demanding applications |
Impurity Profile & Limits
Impurity content depends on raw material quality, equipment hygiene, and thoroughness of purification. Major trace impurities include unreacted tartaric acid, monoester, and isopropanol. Process-specific markers appear in lots run under different acid catalysts or solvent ratios. Manufacturers regularly update impurity limits based on equipment upgrades and market feedback. Critical impurity classes flagged for chiral applications include non-racemic forms and by-products from over-heating or over-reaction; their release limits depend on customer and regulatory requirement.
Test Methods & Standards
GC, HPLC, Karl Fischer titration, refractive index, and colorimetry form the backbone of QC. The final release standard is subject to internal quality control criteria and customer requirements. In-process checks at esterification and post-distillation stages confirm consistency and verify absence of critical impurities. Reference standards for each grade are maintained in the QC lab for cross-batch comparison.
Preparation Methods & Manufacturing Process
Raw Materials & Sourcing
L(+)-Tartaric acid procurement prioritizes consistency in enantiomeric purity, trace metal content, and absence of colored/odorous degradation products. Isopropanol is sourced with attention paid to water, acetone, and acetal contaminants, as their carryover leads to off-odor and reactor fouling. Catalyst and solvent grades are tailored to the chiral integrity required in pharma or fine chemical applications.
Synthesis Route & Reaction Mechanism
Manufacturers use Fischer esterification. L(+)-tartaric acid reacts with isopropanol, catalyzed by a mineral acid. Excess isopropanol assists in shifting equilibrium to full diester formation. Grade-to-grade variation springs from catalyst choice, water removal efficiency, and target reaction completeness. Monitoring temperature and agitation is crucial—hot spots or incomplete mixing cause local over-reaction or monoesters. Process designers choose between batch and continuous depending on expected demand and impurity profile control needs.
Process Control & Purification
Vigilant water removal during esterification determines reaction efficiency and minimizes hydrolytic by-products. Post-reaction, the mixture undergoes sequential distillation to recover solvent, remove volatile impurities, and isolate the diester. Final purification by wash or stripping responds to impurity fingerprint and product grade. Inline analyzers check for color, water, and volatile residuals. Reprocessing feeds or equipment cleaning is triggered by deviations from established batch parameters.
Quality Control & Batch Release
Release batches undergo multi-point sampling and analytical checks for optical purity, residual water, alcohol, and impurity markers. Each grade features its tailored release profile, matched to end use—pharma, agrochemical, or specialty applications. Customers requiring tighter optical or impurity specs receive closed-batch or campaign lots with full traceability. Any lot with off-color or significant deviation in key analytical marks routes automatically to rework or side stream, not final release.
Chemical Reactions & Modification Potential
Typical Reactions
Diisopropyl ester serves as both a synthon and a chiral template. Transesterification with alternative alcohols and hydrolysis under acidic or basic conditions dominate its conversion portfolio. Major modification processes run under strictly anhydrous or controlled moisture, as ester hydrolysis proceeds efficiently even at moderate humidity and pH shift.
Reaction Conditions
Catalyst selection follows intended application: mild acid for hydrolysis, base for transesterification, and neutral conditions for derivatizations where chiral integrity must be preserved. Typical transformation temperatures remain moderate, as excessive heat threatens optical rotation and chiral stability. Solvent choice reflects the required polarity, product solubility, and downstream separation need.
Derivatives & Downstream Products
Developers use the ester for chiral auxiliaries, ligand synthesis, and as intermediates in agrochemicals or specialty polymers. Downstream products are sensitive to both diester purity and optical purity, so impurity management during manufacture is critical for these routes.
Storage & Shelf Life
Storage Conditions
Bulk diester stores best at moderate temperatures, away from moisture and direct sunlight. Nitrogen atmospheres or vapor space blanketing prove necessary in humidity-prone zones or for pharma grades. Containers should be non-reactive (stainless steel, HDPE) due to ester’s chemical sensitivity; unlined metal vessels risk catalyzing trace reactions or causing metal pick-up. Drums once opened risk moisture ingress, so prompt usage or blanket re-application is routine in regulated lines.
Shelf Life & Degradation Signs
Shelf life depends on grade, storage protocol, and environmental control. Highest-purity grades require tight adherence to storage guidelines due to hydrolytic sensitivity. Signs of degradation include color shift, turbidity, increase in water or alcohol content, or detectable acidic odor. Operations teams monitor stock lots by regular sampling and retest, especially for critical-use batches.
Safety & Toxicity Profile
GHS Classification & Hazard Statements
Exact GHS classification depends on national implementation and grade impurity profile. Primary hazards stem from flammability, mild irritancy to skin or eyes, and low toxicity under standard industrial handling. Operators refer to local SDS and internal safety programs for specific workplace protocols.
Toxicity Data & Exposure Limits
Available animal and in-vitro data report low acute toxicity, but long-term exposure data are limited. Handling recommendations rely on general ester safety practice: avoid inhalation, ingestion, and repeat direct skin contact. Regulatory bodies have not set universal exposure limits for this ester; user sites typically implement limits based on process volatility and ventilation effectiveness.
Handling Precautions
Operators use splash goggles, chemical-resistant gloves, and avoid open flames. Pumping transfers require grounding and adequate ventilation due to vapor generation risk. In case of accidental splash, immediate water wash is effective; spills require sorbent containment and solvent-compatible cleanup. Regular safety audits focus on transfer hoses, spill trays, and drum seals to prevent leaks and exposure.
L(+)-Tartaric Acid Diisopropyl Ester
Supply Capacity, Commercial Terms & 2026 Price Trend Forecast
Supply Capacity & Commercial Terms
Production Capacity & Availability
Production output for L(+)-tartaric acid diisopropyl ester depends heavily on precursor supply, reactor scale, and purification throughput. Consistent annual output relies on a stable stream of L(+)-tartaric acid and isopropanol from vetted upstream suppliers. Batch output for high-purity requirements significantly reduces theoretical plant yield due to intensified purification and additional material loss. Most manufacturing schedules favor medium-lot continuity to synchronize with downstream demand from pharmaceutical and fine chemical sectors. Sudden uptake in market demand, particularly from agrochemical or life science intermediate applications, typically generates lead time elongation for higher grades or volume-specific orders.
Lead Time & MOQ
Lead times shift based on purification cycle complexity and grade certification needs. For non-critical industrial grades, minimum order quantities begin with bulk drum or carboy packaging, often coordinated with monthly or quarterly production cycles. Ph.Eur., USP, or food-contact compliant batches require extended QA review and, subsequently, carry higher minimum thresholds linked to campaign-based manufacturing. Average lead time ranges from 2 to 6 weeks depending on these variables and concurrent global logistics constraints.
Packaging Options
Standard packaging consists of HDPE drums, IBCs, or custom containers compatible with isopropyl ester sensitivity and regulatory constraints for food, pharma, or export control. Option choice aligns with purity class and regulatory destination; for high-purity requirements, inner liners or nitrogen overlays reduce cross-contamination and hydrolysis risks during storage and transfer.
Shipping & Payment Terms
Shipments comply with international carriage guidelines for organic esters. Standard terms support CIF, FOB, or DAP with pre-arranged freight classes. Payment terms default to wire transfer; established customers may access 30/60/90-day credit windows in line with risk assessment and prior transaction history.
Pricing Structure & Influencing Factors
Interpretation of Raw Material Cost Composition & Fluctuation Causes
The main cost drivers stem from the price of L(+)-tartaric acid (natural or synthetic origins) and high-purity isopropanol. Supply shortages, particularly for natural tartaric acid tied to wine industry by-products, lead to short-term price spikes and allocation. Fuel price volatility impacts isopropanol production costs, especially where propylene feedstock is derived from naphtha cracking. Consumables for purification and solvent recovery add incremental cost for higher grade products.
Graded Price Differences: Influence of Grade, Purity, and Packaging Certification
End-use application directs grade selection, which sets the baseline for raw material origin, process controls, and regulatory testing. Pharmaceutical and food-contact grades require additional impurity profiling, compendial compliance, and validated batch traceability, all contributing to cost escalations compared to industrial grades. The need for specialized packaging or batch certification (such as DMFs or Kosher/Halal) also reflects distinct price banding across product lines.
Product Price Difference Explanation
The scale of price difference tracks with batch size, release purity, and certification status. Lower-cost, technical grades permit higher variability in isomeric purity, color, and esterification completion, with less stringent release protocols. By contrast, pharma grades demand validated release analytics, stability studies, and full impurity clearance, increasing both direct manufacturing costs and overheads linked to regulatory conformance.
Global Market Analysis & Price Trends
Global Supply & Demand Overview
The global landscape for L(+)-tartaric acid diisopropyl ester shows moderate demand growth, anchored by pharmaceutical intermediates and specialty ester applications. Supply disruptions often originate from limited raw tartaric acid yield swings, particularly in years with volatile grape harvests, reflecting directly in price upticks for dependent esters. Manufacturing concentration in Europe, China, and India creates regional bottlenecks with downstream impact on US and Japanese importers, who depend on logistical fluidity and policy stability in major exporting countries.
Key Economies Analysis
- US: Dependence on imports from Asian and EU producers. FDA and DEA import registrations influence permissible supplier sources. Shift towards domestic production under "Buy American" clauses introduces short-term supply rigidity.
- EU: Benefits from proximity to tartaric acid production, but faces environmental compliance costs (REACH, GHS), pushing manufacturers to improve energy efficiency and waste management, impacting forward pricing.
- Japan: High quality expectations drive demand for extended specification and analytical validation. Imports dominate, with JDMF filings or local agent representation a prerequisite for pharma sectors.
- India: Expands production both for export and local API manufacturers. Currency fluctuation against USD/EUR impacts raw tartrate input costs, particularly during periods of devaluation or fuel surcharges.
- China: Largest raw tartaric acid conversion capacity. Environmental policy tightening on fine chemical residues and stricter safety audits influence capacity utilization and spot price volatility.
2026 Price Trend Forecast
Anticipating current raw material constraint dynamics, global price levels for high-purity L(+)-tartaric acid diisopropyl ester are likely to remain firm through 2025 with possible moderate escalation into 2026. Factors supporting this outlook include ongoing tightening of environmental and export controls in China, continued supply volatility for natural tartaric acid, and incremental regulatory overhead for pharmaceutical and food grades. Expansion of synthetic tartaric acid routes may relieve some pressure if commercialized on scale, but this remains grade-limited.
Data Sources & Methodology
Market analysis leverages internal sales data, published customs records for key export markets, quarterly procurement reviews, and ongoing consultation with global logistics partners. Regulatory changes are tracked through direct engagement with notifying authorities and third-party compliance monitoring.
Industry News & Regulatory Updates
Recent Market Developments
Raw tartrate consumption for esters has tightened as competing uses in enology and specialty polymers drew priority allocations over the last 18 months. Energy inflation and transportation bottlenecks compound lead time and landed cost challenges for all purity grades.
Regulatory Compliance Updates
Recent revisions to EU and US compendial monographs for tartaric acid derivatives placed new analytical benchmarks on residue solvents and optical purity. China’s chemical inspection regime escalated scrutiny of export tanks for ester compounds, leading to additional documentation and extended clearance timeframes.
Supplier Response & Mitigation
Manufacturers invest in multi-sourcing raw tartrate and validate back-up solvent suppliers to cushion feedstock risk. Batch retention protocols and quality analytical suites increase focus on lot reproducibility in response to customer audit requests. Ongoing review of regulatory dossiers aligns product claims with the latest quality expectations for each major market.
Application Fields & Grade Selection Guide: L(+)-Tartaric Acid Diisopropyl Ester
Industry Applications
In chemical manufacturing, L(+)-tartaric acid diisopropyl ester plays a role as a chiral auxiliary, resolving agent, and intermediate. Most demand centers on pharmaceutical synthesis and fine chemical transformation where chiral purity impacts downstream product quality. This ester’s diisopropyl configuration supports certain catalytic pathways and is favored in asymmetric synthesis over dialkyl analogs such as dimethyl or diethyl esters due to solubility and recovery factors. Specialty polymer manufacturers and select agrochemical producers use this material where a chirality transfer agent is needed.
Bulk pharmaceutical ingredient (BPI) producers typically require grades with closely monitored optical rotation and minimal trace metal content. Laboratories will sometimes specify a research or development grade with relaxed thresholds on residual solvents if the application is non-GMP and sub-kilogram.
Grade-to-Application Mapping
| Application Segment | Typical Grade Required | Key Observed Parameters |
|---|---|---|
| Chiral Pharma Intermediate | High Purity, Low Residue | Optical purity, residual solvents, trace metals, color |
| Fine Chemical Synthesis | Standard Technical or Custom Purity | Assay, byproduct profile, water content |
| Polymer Modifier | Technical Grade | General assay, less focus on optical purity |
| Research/Screening | Lab or R&D Grade | Assay, may permit higher impurity levels |
Selection across applications depends on batch consistency, impurity profile control, and documentation support. For regulated sectors, full quality traceability and release testing are required, especially for pharmaceutical or food-related use.
Key Parameters by Application
Across synthesis, the observed batch color, clarity, and odor provide quick visual checks for residual process byproducts. Optical purity, typically measured as specific rotation, acts as a direct proxy for suitability in chiral drug synthesis—customers involved in enantioselective applications track this closely. For those participating in regulated APIs, data packages on elemental impurities (such as Pb, Cd) and GC-assayed solvent residues are non-negotiable.
Technical grade can possess slightly broader impurity ranges, suitable for chemical processing streams where downstream purification is standard. Fine chemical users sometimes tailor target specifications to match downstream catalyst sensitivity.
Moisture content impacts storage and handling—grades with low water support easier packaging and extended shelf stability. Higher assay requirements generally correlate with applications in high-value end-products, while lower grades function as starting materials when cost takes precedence.
How to Select the Right Grade
Step 1: Define Intended Application
Start with clarity on the final use. Pharmaceutical applications almost always lead to requests for highest purity and chiral assurance. Downstream food-contact or medical device production codes demand additional scrutiny. If used in chemical modification or as a temporary derivatization agent, trade-offs in grade may be possible.
Step 2: Identify Regulatory Requirements
For regulated industries, check explicit regional or international requirements—such as pharmacopoeia conformity, specifications for USP/EP/BP, or guidance from authorities covering ICH Q3D, REACH, or TSCA where applicable. Submitting documentation for each supplied batch is routine for these sectors, and customers need assurance on chain of custody and trace elements.
Step 3: Evaluate Purity and Analytical Needs
Specifying assay and impurity thresholds stems from process sensitivity and final product specifications. Projects with critical optical activity need batches with validated [α]D values. If customers need unique analytical support (such as NMR or LC-MS batch summaries), these requests should be raised before any order.
Step 4: Consider Required Volume and Budget
Real-world production realities push trade-offs between grade, packaging, and pricing. High-volume users might standardize on technical or intermediate grade, reserving high-purity lots for campaign-critical runs. Small-scale users in custom synthesis or pilot plant operations may opt for laboratory or R&D grade to balance cost against purity, while planning separate validation activities.
Step 5: Request Sample and Conduct Technical Validation
Before locking any procurement, practical steps include requesting a manufacturer-supplied sample. End-use application testing in real-world process conditions offers the clearest early indication of suitability. Typical industrial producers support this approach with retained samples from validated batches and readily supply batch-level analysis reports. Sample validation identifies any unforeseen impacts of minor impurities, colored by the downstream chemistry context.
Trust & Compliance: Quality Certifications & Procurement Support for L(+)-Tartaric Acid Diisopropyl Ester
Quality Compliance & Certifications
Quality Management Certifications
Production facilities for L(+)-Tartaric Acid Diisopropyl Ester operate under established quality management protocols. Certification such as ISO 9001 reflects systematic adherence to process oversight, traceability, and process validation across production and quality assurance. Internal audits focus on raw material traceability, equipment calibration scheduling, critical control point monitoring, and incident management. These frameworks build reliability into every batch and allow adjustment to customer-defined quality standards, including specific impurity control or cross-contamination prevention practices required for sensitive downstream uses.
Product-Specific Certifications
Certification and compliance are tailored to the sector and region—pharmaceutical, food, or technical. Where end-use is pharmaceutical, process documentation supports traceability from raw input to final purification. Manufacturing aligns with GMP whenever customer or regulatory needs dictate, and audit trails follow material every step. Each grade of ester is matched to contract-based impurity requirements. For non-pharma technical applications, quality criteria focus on process capability and reproducibility, with less emphasis on pharmacopeial standards but with tight in-process controls for functional grade requirements.
Documentation & Reports
Release documentation includes a signed Certificate of Analysis referencing analytical method, batch tracking, and test results as specified in the customer’s technical agreement. Test reports are provided for every lot, listing main assay, primary impurity profile, and water/moisture content according to the defined specification window. Documentation also covers in-process control points such as identification by FT-IR or NMR if required and includes handling guidance critical to storage stability or blending in the next processing step. Compliance statements for region-specific registrations, allergen, non-animal origin, or reach commitment are furnished where requested. Data retention timeframes align with contractual and regulatory requirements.
Purchase Cooperation Instructions
Stable Production Capacity Supply and Flexible Business Cooperation Plan
Supply security draws on multiple factors: minimum batch size, campaign-planned production, and pre-qualified raw material sourcing. Manufacturing volume flexes depending on grade, end-use, and forecasted consumption. Stable output is managed by mapping order commitment against real production windows, which allows efficient resource allocation and priority for high-frequency or volume customers. Flexibility is built into annual and semi-annual purchasing schedules; spot requirements and supply surges draw from safety stock or advance campaign scheduling where the business case matches process feasibility.
Core Production Capacity and Stable Supply Capability
Key to stable supply is control of critical raw material streams, monitored vendor qualification, and vertical integration on main synthetic routes. Multisite capability or contract tolling solutions are adopted for higher-volume or more stringent security-of-supply OEM agreements. Capacity allocation distinguishes between pharma and technical grades due to different cleaning validation and downtime considerations. Routine preventive maintenance and redundancy on process-critical equipment minimize unscheduled downtime. Forward production planning aligns to forecast commitments, balancing ongoing orders with planned sample and development needs for customers exploring new applications.
Sample Application Process
Sample requests follow a dedicated technical approval route. Initial inquiry triggers a technical evaluation of the requested grade, batch size, and intended application. Once scope and grade are mutually clarified, a laboratory or pilot-scale batch is allocated. Documentation accompanying samples reflects the analytical and in-process controls representative of target batch production, not only laboratory-scale material. Pre-shipment includes stability handling advice—a necessity where the ester’s volatility or hydrolysis sensitivity plays a role. Feedback on sample outcome supports iterative refinement for final contract manufacturing.
Detailed Explanation of Flexible Cooperation Mode
Business partnership is often shaped case-by-case: direct supply, consignment stock, dedicated batch or campaign production, or dual supply chain for risk mitigation. Multi-grade users or those with regionally distributed plants often require custom logistics or warehousing solutions, structured through joint supply planning or VMI (vendor-managed inventory) systems. Contractual flexibility covers non-standard pack sizes, requalification intervals, and expedited release based on in-process confirmation where justified. Co-development arrangements enable tune-up of product characteristics for specific application challenges or process compatibility needs.
Market Forecast & Technical Support System: L(+)-Tartaric Acid Diisopropyl Ester
Research & Development Trends
Current R&D Hotspots
Recent technical focus centers on refining stereoselective synthesis of L(+)-Tartaric Acid Diisopropyl Ester. Manufacturing teams are investigating alternative catalysts to reduce energy input and minimize racemization risk. Analytical improvements emphasize real-time in-process monitoring using chiral HPLC, supporting tighter control over enantiopurity, which frequently requires adjustment based on target application.
Emerging Applications
L(+)-Tartaric Acid Diisopropyl Ester operates as a critical resolving agent and chiral building block in specialty synthesis fields, including asymmetric catalyst preparation, pharmaceutical intermediate manufacture, and fine chemical customization for agrochemical formulations. The diversity in target molecules has driven producers to expand reaction scope and compatibility, especially in non-aqueous system processing and high-throughput screening setups for contract development and manufacturing organizations.
Technical Challenges & Breakthroughs
Production facilities often contend with by-product management during esterification, particularly when handling raw materials with variable impurity profiles. Technologists are developing process routes to decrease formation of diacid and monoester side products, leveraging more precise raw material specification, microfiltration, and solvent recapture. Notable advances in batch consistency arise from the adoption of digital batch records integrated with real-time sensor feedback, increasing traceability from raw material intake through final QC release. Overcoming thermal instability in certain grades required further optimization of reaction temperature profiles and solvent choice to balance throughput with product integrity.
Future Outlook
Market Forecast (3-5 Years)
From the viewpoint of core production and applied R&D, demand for L(+)-Tartaric Acid Diisopropyl Ester ties closely to the growth trajectory of chiral synthesis in pharmaceutical and specialty chemical sectors. Moderate to strong volume increases are anticipated, particularly as broader classes of enantioselective catalysts and ligands transition from laboratory-scale to commercial manufacture. Supply chain adaptation remains important, with closer integration of precursor sourcing and cooperative agreements to ensure raw material reliability in regions with variable agricultural output.
Technological Evolution
Next-generation process improvements are trending toward closed-loop solvent re-use and inline analytics, reducing manual sampling and analyst labor, especially under high-throughput finishing campaigns. Enhanced digital controls enable tighter deviation management, including predictive adjustments when feedstock purity drifts or during scale-up from pilot to plant scale. Refinement of continuous flow synthesis is under active evaluation for facilities prioritizing consistent downstream integration and waste stream minimization.
Sustainability & Green Chemistry
Manufacturing teams are committed to lowering environmental impact. Current projects look at bio-based alcohol sources for esterification, and reduced-odor process solvents. Waste management heavily relies on solvent recapture and aqueous effluent conditioning. Ongoing pilot studies assess enzyme catalysis as an alternative to traditional acid catalysts, with the goal of further energy savings and reduced hazardous waste. Packaging options also shift towards recyclable drums and minimal-use container systems per customer feedback and regulatory trends.
Technical Support & After-Sales Service
Technical Consultation
Technical services provide direct support to address process-integration challenges, with specialists available for on-site or virtual root-cause analysis if manufacturing performance varies after formulation changes. Guidance spans raw material compatibility, optimal dosage profiles, reaction balancing, and advice on impurity management using facility-specific data shared by the customer.
Application Optimization Support
Application chemists and engineers work alongside production partners on process trials, especially where the ester influences chiral separation or acts as a resolving agent in a novel system. Support includes recommendations for grade selection—based on purity, water content, and optical activity—plus troubleshooting protocols when process scale-up yields deviate from lab predictions. Plant visits may be scheduled for high-value partnerships to observe operation and share feedback firsthand.
After-Sales Commitment
Commitment covers batch traceability, expedited issue escalation, and continuous improvement reviews with downstream users. Internal quality teams monitor complaint frequency and trend analysis, feeding this back into manufacturing change control. Formal documentation accompanies each shipment, with re-evaluation or additional testing available if performance benchmarks in customer-specific applications call for closer investigation.
L(+)-Tartaric Acid Diisopropyl Ester: Enabling Chemical Processes at Scale
Direct Production: Control from Raw Material to Finished Ester
L(+)-Tartaric Acid Diisopropyl Ester results from established production steps in our facility, starting with selective resolution of natural tartaric acid followed by a controlled esterification. Years of direct manufacturing experience allow us to monitor each batch, from raw acid through distillation and purification. Our teams maintain reaction parameters to minimize byproducts and guarantee isomeric purity, making this ester a reliable chiral intermediate for industrial users.
Industrial Applications: Stereochemistry and Beyond
Demand for L(+)-Tartaric Acid Diisopropyl Ester stems from its role as a chiral resolving agent and intermediate in active pharmaceutical ingredient synthesis. Plants, polymer manufacturers, and specialty material producers rely on this ester in asymmetric catalysis, resolution of racemic mixtures, and creation of optically active compounds. We work closely with technical teams from downstream sectors, aligning our output to meet stringent chiral purity essential for complex molecule construction.
Product Consistency: Batch-to-Batch Reproducibility
Reliable outcomes require tight process control. In-house labs control key quality criteria, including enantiomeric excess and trace impurity limits. Our production lines follow validated standard operating procedures and calibration routines, paired with sample retention and recall capability. This infrastructure supports both contractual lots and development-scale requests from R&D organizations.
Packaging and Supply: Flexible Solutions for Industry
We pack L(+)-Tartaric Acid Diisopropyl Ester at a dedicated loading facility designed for safe, moisture-free handling. Standard packaging options include lined drums, IBCs, or bulk containers, with logistics teams experienced in cold-chain and hazardous cargo compliance. Our inventory management gives manufacturers and importers assured supply continuity, with stock reservation programs available for regular users.
Technical Support: Process Integration Assistance
Process chemists and plant engineers face challenges integrating chiral esters at scale. Our technical support team draws on hands-on manufacturing know-how to offer real process solutions, including handling advice, impurity troubleshooting, and scalability consultation. Many customers collaborate with our specialists to adapt the ester for continuous-flow production lines, minimizing waste and maximizing throughput.
Business Value: Support for Commercial Scale and Procurement
Production oversight within a single facility streamlines sourcing cycles and shortens lead times. Distributors, formulators, and brand manufacturers gain assured access to a competitively priced ester meeting industrial grade criteria every shipment. Procurement specialists minimize risk by working with a partner that performs in-house quality validation, maintains shipment traceability, and covers regulatory documentation at the point of origin. Our sales team understands the expectations that global chemical manufacturers and distribution networks place on supply partners.
| Core Strength | Benefit to Industrial Buyer |
|---|---|
| Direct manufacturing control | Reduced supply chain risk, traceable origin |
| Process scale adjustable | Flexibility for pilot to commercial runs |
| Lab-backed quality release | Consistent chiral purity, low byproducts |
| Secure packaging, export-ready | Safe transport, regulatory confidence |
| Industrial technical support | Process integration, troubleshooting insight |
Industrial FAQ
What is the enantiomeric excess (ee) and chemical purity of L(+)-Tartaric Acid Diisopropyl Ester in your standard product offering?
Our Commitment to High Chiral and Chemical Standards
Manufacturing L(+)-Tartaric Acid Diisopropyl Ester involves more than combining chemicals and setting a reaction vessel into motion. The value most of our industrial and laboratory clients demand comes back to two core promises: enantiomeric excess (ee) and chemical purity. From our earliest batches, we realized that even slight deficiencies in either aspect can derail a customer’s project, lead to regulatory challenges, or compromise downstream synthesis.
Enantiomeric Excess: Why the Details Matter
Our production relies on a chiral pool synthesis using naturally sourced L(+)-tartaric acid. The enantiomeric excess represents the proportion of one enantiomer compared to its mirror image, which holds special importance in pharmaceutical, agrochemical, and specialty chemical sectors. Missteps in this metric can result in major downstream issues, ranging from non-compliance to lost activity in critical reactions. Each plant run is monitored by chiral HPLC, and our technical protocols include random batch spot-testing to catch any drift. Most installations hold to above 99% ee, with regular validation runs ensuring we meet or surpass these targets. We do not cut corners; consistent chiral purity sits at the core of our value promise.
Chemical Purity: Beyond the Numbers
All our L(+)-Tartaric Acid Diisopropyl Ester batches go through a tailored purification process that uses column chromatography and multiple distillation cycles. Here, chemical purity isn’t just a number—it shows the effectiveness of all prior efforts from raw material selection to the tightening of procedural controls. Many customers measure impurities at the ppm level. We respond with routine GC and NMR analysis followed by full batch records. Typical batches deliver a purity ≥99.0%. Customers in electronics and high-purity catalyst production often request even higher specifications, which we provide with supporting COAs and chromatograms on request.
Quality in Practice: Maintaining Integrity Batch After Batch
Chemical manufacturing ought to build trust through repeatable results and transparent operations. It’s not enough to claim tight control; operators on our lines are trained to recognize deviations and initiate corrective measures at the first sign of process variation. We select raw materials for traceability, and our reactors run under rigorous maintained conditions with automatic logging. Each finished lot comes with technical documentation showing enantiomeric excess, chemical purity, moisture content, and key impurity profiles. We keep retains for all standard lots to enable post-shipment verification.
Tailoring to Application Demands
Every downstream application—whether it’s asymmetric synthesis, chiral resolution, or custom formulation—draws its value from starting materials that hit quality benchmarks. We constantly review feedback from research and production partners to refine specifications and offer flexible packaging. Year after year, our team fields customer audits, responds to performance reviews, and participates in collaborative troubleshooting to confirm that the product fits each unique scenario.
Technical Support and Transparency
Solid specification doesn’t work in a vacuum. Our technical support team stands ready to provide additional analysis, answer project-specific questions, and supply expanded documentation packages. As a direct manufacturer, we know firsthand what goes into every drum and every specification sheet. Clients seeking even tighter tolerances or alternate analytical reports can coordinate projects directly with our lab team for full technical alignment.
What are the available packaging sizes and minimum order quantities for procurement of L(+)-Tartaric Acid Diisopropyl Ester?
How We Approach Packaging
In our production facilities, packaging decisions have always involved close work with partners who demand consistent material handling. For L(+)-Tartaric Acid Diisopropyl Ester, most customers in pharmaceuticals, agrochemicals, or specialty synthesis need reliable, secure packaging that offers safe transport and straightforward integration in their plant workflows. We have invested in a robust filling and container inspection process to reduce cross-contamination risks and secure product integrity.
Standard Packaging Sizes
Large-scale producers and finished product manufacturers have different processing needs, so our standard offering includes both 25 kg drums and 200 kg steel or HDPE drums for regular shipments. Both package types are sealed for protection against moisture and air exposure. For research labs or custom process runs, we provide customizable options as low as 5 kg packed in laboratory-grade containers. With these ranges, scale-ups or large-volume campaigns do not face delays from repackaging.
Handling Minimum Order Quantities
Our production line sets a minimum order quantity (MOQ) of 25 kg for industrial procurement, which matches our smallest drum size. We’ve set this threshold after reviewing both customer usage patterns and our cost-effective batch scale. Most regular customers order in multiples of 25 kg, but large projects move to palletized 200 kg drums—efficient for both sea and road freight. For long-term supply contracts, we accommodate roll-over scheduling to help customers avoid storage bottlenecks.
Preventing Packaging Problems
Complex molecules like L(+)-Tartaric Acid Diisopropyl Ester can degrade in poor conditions. Over time, poorly sealed packaging risks product loss or changes in critical chemical properties. We use drum liners, nitrogen blanketing for highly sensitive batches, and tamper-evident seals. Our logistics and technical teams monitor route temperatures in transit, secure climate control in storage, and provide advice on warehouse best practices.
Challenges in Custom Orders
Custom packaging requests can stretch lead times, especially during peak production months. Switching between drum types or packing smaller lab samples requires extra changeover in our filling lines, so advance notice yields better service. Clients seeking unusual container sizes or specific labeling can work directly with our technical or shipping specialists. We don’t repack from third-party stocks—everything leaves our facility under our process controls for traceability and batch integrity.
Why Proper Packaging and MOQs Matter
Handling specialty esters at industrial scale, we’ve seen that well-matched order sizes keep inventories fresh and costs low. Oversized bulk packaging can tie up customer inventory and reduce flexibility, while too many small packs drive up total logistics costs. Our MOQ policy reflects the minimum efficient volume at which we maintain best pricing and reliable product condition. Preventing repetitive partial-order shipments also lowers transport emissions and administrative overhead for both sides.
Supporting Your Materials Management Team
For technical details or to discuss a packaging option outside our usual range, our technical team is on hand for direct support. We continuously review customer feedback from industrial sites to refine our packaging, secure closures, and labeling information. Short lead times, safe materials handling, and honest batch traceability have secured long-term relationships with procurement managers who rely on direct-from-factory quality.
Does L(+)-Tartaric Acid Diisopropyl Ester comply with international shipping regulations, and can you provide supporting documentation such as SDS and CoA?
Over the years, our operations have seen the regulatory landscape for shipping chemical products grow both stricter and more nuanced. Safe and uninterrupted transport of L(+)-Tartaric Acid Diisopropyl Ester across global borders not only safeguards customers and logistics partners but also ensures business reliability. Major ports and air cargo hubs expect full regulatory documentation for each product that passes through customs control, and our team works with these realities every day.
Shipping Classification and Regulatory Compliance
L(+)-Tartaric Acid Diisopropyl Ester does not fall under substances regarded as dangerous goods under typical UN transport recommendations, such as those observed by ICAO, IATA, or IMDG regulations. At our factory, we confirm the classification during each batch review. Our compliance group checks current shipping codes for every order leaving our warehouse. We issue all export documentation mandated by international freight carriers so customs agents face no doubts about proper labelling or manifest details tied to our product shipments.
As a result, our drums and intermediate bulk containers that leave the site carry the exact hazard statements, precautionary marks, and identification as listed on the Safety Data Sheet (SDS). Our team updates these documents any time global or regional regulations change. Local regulations in certain markets still warrant extra review; our regulatory staff manages these requests with translation and revised pack-labelling on request. This oversight is how we guarantee our customers abroad never see delays or rejections for non-compliant chemical transit documents.
Supporting Documentation: SDS and CoA
Our production lines are set up to generate full Certificates of Analysis (CoA) for every lot dispatched. Each CoA details the relevant chemical properties and specific purity figures, directly checked against manufacturing controls at our facility. These certificates not only meet final customer requirements but also keep our own quality assurance team accountable for every outgoing shipment.
We maintain an updated SDS that provides a detailed breakdown of composition, hazard categorization, safe storage, and transport considerations. This documentation directly satisfies GHS, OSHA, and REACH standards. Before any export, our logistics desk supplies both the SDS and CoA, packaged alongside the customs invoice and packing list. Digital versions are available as soon as the shipping docket is organized, so overseas partners can check compliance before any shipment departs our warehouses.
Continuous Regulatory Oversight
Rules and expectations from both international and destination-country authorities change regularly. Our compliance team follows these changes by referencing regulatory intelligence feeds and collaborating with shipping partners. We audited our workflow recently to ensure that all documentation, from packing labelling to bulk certificate generation, matches current standards and reflects the underlying regulatory environment accurately.
This approach means our clients avoid unnecessary customs questions, forced returns, or unexpected storage fees due to regulatory hold-ups. Our direct control over raw material selection, batch segregation, and export documentation has minimized non-compliance risk and protected our reputation as a reliable producer. Our experience shows that investing effort upfront in meeting every shipping and documentation requirement pays dividends. Clients receive product on time, with all documentation in order, and have confidence in the transparency of every transaction.
Technical Support & Inquiry
For product inquiries, sample requests, quotations or after-sales support, please feel free to contact me directly via sales2@liwei-chem.com, +8615380400285 or WhatsApp: +8615380400285