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(+)-Diacetyl-L-Tartaric Anhydride

    • Product Name (+)-Diacetyl-L-Tartaric Anhydride
    • Alias DATAN
    • Einecs 214-658-0
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry sales7@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
    VTB
    Specifications

    HS Code

    145200

    Chemical Name (+)-Diacetyl-L-Tartaric Anhydride
    Cas Number 71622-61-2
    Molecular Formula C8H8O6
    Molecular Weight 200.15
    Appearance White to off-white solid
    Melting Point 76-80°C
    Purity Typically ≥98%
    Solubility Soluble in chloroform, acetone, and dichloromethane
    Storage Temperature 2-8°C (refrigerated)
    Optical Rotation [α]D20 +19° (c=1, CHCl3)

    As an accredited (+)-Diacetyl-L-Tartaric Anhydride factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing (+)-Diacetyl-L-Tartaric Anhydride is supplied in a 25g amber glass bottle, securely sealed, with clear hazard and identification labeling.
    Shipping (+)-Diacetyl-L-Tartaric Anhydride is shipped in tightly sealed containers to prevent moisture exposure and degradation. The packaging complies with chemical safety regulations, ensuring protection from physical damage and contamination. Shipping is handled by certified carriers specializing in hazardous materials, with proper documentation and labeling to ensure regulatory compliance and safe transportation.
    Storage Store (+)-Diacetyl-L-Tartaric Anhydride in a cool, dry, well-ventilated area, away from moisture and incompatible substances such as strong bases and oxidizing agents. Keep the container tightly closed and protect it from direct sunlight. Store under inert atmosphere if possible. Use appropriate chemical storage cabinets and clearly label the container for laboratory use only.
    Application of (+)-Diacetyl-L-Tartaric Anhydride

    Applications of (+)-Diacetyl-L-Tartaric Anhydride in Industrial Manufacturing

    As a specialized manufacturer, we supply (+)-Diacetyl-L-Tartaric Anhydride to a range of industries that require well-defined performance characteristics and strict process control. The following sections describe the principal downstream markets, process integration details, internationally referenced standards, recommended additive ratios, and final product formats that utilize this raw material.

    1. Production of Tartaric Esters for Food Emulsifiers

    Food emulsifier producers rely on (+)-Diacetyl-L-Tartaric Anhydride to synthesize Tartaric Acid Esters of Mono- and Diglycerides (DATEM), used to improve bread texture, dough conditioning, and crumb structure. Manufacturers usually react the anhydride with edible fats or oils, ensuring accurate dosing during esterification for consistent functional attributes. The final utility depends on clean reaction profiles, food contact purity, and regulatory compliance in high-volume bakery and confectionery lines worldwide.

    Industry compliance standards

    • FAO/WHO JECFA specifications for food additives
    • EU Regulation (EC) No 1333/2008 on food additives
    • 21 CFR 172.828 (FDA regulation for DATEM in food)
    • GB 2760-2014 (China National Food Safety Standard for Use of Food Additives)

    Typical usage ratio

    • 2–7% by weight of mono- and diglycerides in the esterification mixture; exact dosage fine-tuned based on intended emulsifier HLB value and desired application properties.

    Downstream process integration

    • Directly fed into esterification reactors during synthesis of emulsifying esters, under controlled temperature and vacuum; followed by neutralization, purification, and spray drying or flaking during final product formation.

    Final product types

    • DATEM emulsifiers for bread and bakery improvers
    • Processed cheese and cream formulations
    • Instant noodle texture enhancers
    • Whipped topping and dessert stabilizers

    2. Stereoselective Synthesis in Pharmaceutical Intermediates

    Chemical process engineers in the pharmaceutical sector apply (+)-Diacetyl-L-Tartaric Anhydride as a chiral derivatizing agent in the manufacture of optically active intermediates and APIs. This anhydride introduces stereochemistry for asymmetric synthesis or resolution of racemic bases, particularly in processes where enantiopurity directly determines bioactivity and regulatory acceptability. High purity and traceability documentation enable pharmaceutical clients to maintain GMP traceability from raw material to active drug substance.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice (GMP) for Active Pharmaceutical Ingredients
    • United States Pharmacopeia (USP) monograph for relevant intermediates
    • European Pharmacopoeia (Ph. Eur.) requirements
    • Guideline on the specification limits for impurities in pharmaceuticals (ICH Q3A/B)

    Typical usage ratio

    • 0.9–1.2 molar equivalents relative to the resolvable amine or alcohol in the target substrate; exact excess may be introduced to drive conversion and facilitate separation.

    Downstream process integration

    • Reacted in enantioselective derivatization, mixed with substrate in organic solvent under controlled pH and temperature, followed by crystallization or chromatographic separation of the desired enantiomer.

    Final product types

    • Chiral pharmaceutical intermediates (e.g., alpha-amino acids, beta-blockers)
    • API precursors for cardiovascular and neurology drugs
    • Resolution agents for advanced stereocontrolled syntheses

    3. Analytical Derivatization in Chromatographic Methods

    Specialty laboratories engaged in enantiomer analysis utilize (+)-Diacetyl-L-Tartaric Anhydride during pre-column derivatization to prepare samples for liquid chromatography (HPLC) and gas chromatography (GC). This facilitates the formation of diastereomeric derivatives with primary and secondary amines, making chiral separation and quantification reliable and repeatable when validating purity or conforming to international standards for finished pharmaceuticals or agricultural actives.

    Industry compliance standards

    • ICH Q2(R1) Validation of Analytical Procedures
    • USP General Chapter <781> Optical Rotation
    • ISO/IEC 17025 Laboratory Accreditation for Chemical Testing
    • FDA Guidance for Industry: Analytical Procedures and Methods Validation

    Typical usage ratio

    • 1.1–1.5 molar equivalents to sample analyte; fine-tuned based on sample matrix complexity and desired detection sensitivity.

    Downstream process integration

    • Mixed with prepared sample in suitable solvent, followed by incubation at specified temperature for complete reaction; excess reagent and byproduct removed before injection into chromatograph for enantiomeric ratio determination.

    Final product types

    • Certified standard reference chromatograms
    • Pharmaceutical quality control assay reports
    • Agricultural active chiral purity certificates

    4. Specialty Chemical Synthesis of Chiral Ligands and Catalysts

    Advanced catalyst and ligand manufacturers employ (+)-Diacetyl-L-Tartaric Anhydride to construct chiral frameworks required for metal-ligand complexes in homogeneous asymmetric catalysis. The anhydride imparts the necessary stereochemistry during the stepwise assembly of ligand precursors, supporting high selectivity in later downstream hydrosilylation, hydrogenation, or epoxidation operations—particularly for the fine chemical and fragrance industries where reaction enantioselectivity controls downstream product quality profiles.

    Industry compliance standards

    • ISO 9001:2015 Quality Management Systems
    • REACH (EC 1907/2006) chemical safety requirements
    • OECD Guidelines for Testing of Chemicals
    • Internal technical grade and analytical purity protocols for catalyst production

    Typical usage ratio

    • 0.8–1.5 molar equivalents per mol of ligand starting material, depending on the structural complexity and targeted yield of chiral centers; refined based on route optimization studies.

    Downstream process integration

    • Added during main ligand synthesis via acylation or derivatization steps; integrated into preparative reactor sequences before subsequent metal complexation or ligand purification stages.

    Final product types

    • Chiral diphosphine-based catalysts for pharmaceutical manufacture
    • Chiral auxiliaries for fine chemicals synthesis
    • Homogeneous asymmetric hydrogenation systems

    5. Modification of Biopolymers for Biomedical and Diagnostic Materials

    Manufacturers producing advanced biopolymer and hydrogel matrices use (+)-Diacetyl-L-Tartaric Anhydride for targeted surface modification or cross-linking of polysaccharides and gelatin. The anhydride introduces additional reactive centers or controlled hydrophilic domains, supporting specific biomedical end uses such as implantable scaffolds, diagnostic media, and specialized wound dressings. Controlled addition at defined process stages achieves reproducible material properties crucial for end-use validation and patient safety.

    Industry compliance standards

    • ISO 10993 Biocompatibility Evaluation of Medical Devices
    • USP Class VI Certification for Medical Polymers
    • FDA 21 CFR Part 820 Quality Systems Regulation (QSR)
    • EN ISO 13485 Medical Device Quality Management

    Typical usage ratio

    • 0.5–2% by weight of base biopolymer; adjusted to matrix molecular weight and targeted crosslinking density as determined by rheology and functional property testing.

    Downstream process integration

    • Blended into aqueous or aqueous-organic biopolymer solutions prior to gelation or drying; the anhydride reacts under controlled pH and time to ensure uniform surface modification without residual reactant contamination.

    Final product types

    • Functionalized hydrogel sheets for wound management
    • Crosslinked biopolymer beads for diagnostic assays
    • Biomedical scaffolds supporting cell attachment and differentiation
    Free Quote

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    Certification & Compliance
    More Introduction

    (+)-Diacetyl-L-Tartaric Anhydride: Insight from the Manufacturer’s Floor

    Bringing Clarity To (+)-Diacetyl-L-Tartaric Anhydride

    Rolling up our sleeves here on the production floor, we have a clear view of how (+)-Diacetyl-L-Tartaric Anhydride serves industries across the board—especially winemaking, pharmaceuticals, food and beverage, and labs focused on chiral chemistry. We know this product from its very roots: the raw materials, the critical temperature controls, the precise isolation steps during production. This fundamental understanding comes from working with the compound daily, seeing how small variations in process affect the final batch, and troubleshooting along the way.

    This material, with the model DATAN-0302, stands out for its specific optical rotation and enantiomeric purity. We consistently maintain batch-to-batch purity above 99%, a result of painstaking water control and tight processing timelines. In production, it forms as pale crystals with a uniform texture that allow for efficient handling within downstream synthesis. Without that solid control of side reactions during acylation, you see a drop in both color and reactivity—something customers in analytical applications or food-grade projects cannot afford.

    From Raw Material To Application: Our Perspective

    Walking through the process, every batch starts with natural tartaric acid, which we transform through acetylation under strict time and temperature management. Our focus centers on retaining the L-form configuration at every step. Small deviations, unobserved in generic syntheses, lead to racemization—and a loss of the specific chiral effect valued in flavor modification or pharmaceutical intermediate synthesis. In our plant, technician hands and in-line analytical testing catch these issues in real-time, stopping errors before they cascade.

    Many product descriptions on the web focus only on end uses, but having seen what goes into a stable, high-purity product, we take pride in the details—clear melting points, minimal residual moisture, and non-detectable levels of monocyclic byproducts. End users in food processing notice the difference. For example, beverage formulators use (+)-Diacetyl-L-Tartaric Anhydride for stabilizing tartar and balancing acid profiles in grape and fruit wines. If the product varies from batch to batch—by even two points of purity—it influences taste, mouthfeel, and stability in the bottle. Historical batch comparisons show that color and haze in the final beverage trace back to earlier lapses in anhydride purity.

    Differentiating What We Make vs. Commodity Product

    There are several routes to make tartaric anhydrides, but only the (+)-Diacetyl-L-Tartaric Anhydride, with defined absolute configuration, fits for enantioselective synthesis or regulated food use. Some manufacturers offer blends or lower-purity analogs, aiming to undercut on price, yet they introduce trace organic acids, solvent residues, and inconsistencies in reactivity. From years of feedback, we know that even minor contaminants can poison catalysts, especially in asymmetric hydrogenation or esterification. Our technical team meets every week to review process deviations and pinpoint where a utility fluctuation or different lot of raw input has altered the chiral signature of finished DATAN-0302.

    In practice, pharmaceutical clients tend to push for certificates of chirality, not just blanket statements on purity. They often request direct polarimetric readings and gas chromatography traces that confirm the retention of the L-form throughout the batch. We respond not by reciting compliance to dry monographs, but by showing production logs and test records that anchor confidence in the product’s consistency. Examples from some of our production runs display repeatable specific rotation values within less than 0.5° of batch average, which beats expectations for most industrial tartaric derivatives.

    Meeting Chemistry Where It Lives

    The use of (+)-Diacetyl-L-Tartaric Anhydride in analytical chemistry—such as resolving racemic amines or alcohols—rests on its preferential reactivity toward other chiral centers. Our staff chemists field plenty of requests from academic laboratories and specialty synthesis firms. They want assurance that product comes free from racemic or meso impurities that undermine enantioselectivity. In our experience, quick-access technical support paired with sample testing not only answers these needs, but lets us adapt process tweaks based on direct user feedback. Labs employing the anhydride in enantioselective synthetic schemes rely on the product to behave predictably when forming diastereomeric derivatives for analysis.

    Compared to generic anhydrides or industrial tartaric derivatives, DATAN-0302 holds a distinct edge in stability and reproducibility. Unlike basic diacetyl tartaric acid, which can hydrolyze in humid air or during aqueous reactions, our carefully packaged (+)-Diacetyl-L-Tartaric Anhydride maintains structural integrity longer, enabling accurate stoichiometry in synthesis. We see repeat orders from customers who previously faced trouble with inconsistent results from other sources. Having transparency in water content and controlling packaging—desiccant, oxygen barriers—matters as much as the synthetic pathway.

    Talking About Specifications: On the Ground Insights

    For those familiar with technical specifications, DATAN-0302 presents as a white to off-white powder or crystalline solid, free from visible colored particles and clumping. Our labs record melting points in the 153–156°C range, which offers a practical indicator of product quality. Savvy users sometimes ask about particle sizing; we maintain a middle range that balances free-flow with ease of dissolution. Size reduction impacts product loss and dusting, so we restrict unnecessary grinding, instead optimizing through batch crystallization controls.

    Moisture content proves a telling point—our product carries less than 0.2% residual water, as found by Karl Fischer titration. Higher moisture correlates with lower shelf-life, poor dissolution, and unwanted byproduct formation in downstream reactions. Anhydride content checks at over 97% by titration with potassium hydroxide. Impurity profile management means running regular HPLC analyses and pooling suboptimal lots for remedial processing. Failure rates usually trace back to packaging lapses or fluctuations in bulk storage humidity. It is this control at every node that determines whether the end user experience is headache-free—or plagued by rework and adjustments.

    Why Applications Matter To Us

    Churning out metric tons of product each month, our operators see which batches lead to repeat satisfaction, versus which trend toward customer complaints. In the food and beverage sector, DATAN-0302 shows its value not just as a tartaric acid derivative, but as a differentiating tool in flavor and fermentation management. Wineries favor its use because pure, correctly configured anhydride supports better tartrate stabilization, helping wines clear with improved filterability. A classic impact comes during cold stabilization, where a small addition of our L-form product keeps potassium bitartrate crystals from clouding and settling prematurely. End users cite easier filtration and less need for post-treatment clarification.

    Pharmaceutical synthesis submits the product to even stricter scrutiny. Some use our (+)-Diacetyl-L-Tartaric Anhydride as a chiral resolving agent for new drug molecules, depending on it to craft intermediates with single-enantiomer purity. This demand pushes us to translate lab-scale vigilance into industrial-scale trustworthiness. Purity and the exclusion of racemized byproducts receive a spotlight, since regulatory filings for new drugs draw skepticism at the slightest analytical anomaly. Years of engagement with quality assurance—alongside ongoing dialogue with research chemists—lets our team keep process controls and documentation ready for the most demanding audits.

    On rare occasions, R&D customers push for specialty modifications—tailored solubility, altered particle morphology, or bespoke packaging. Our technical staff and custom synthesis unit look at feasibility not from a mere sales angle, but from lived experience working through these requests over years. Attempts to modify the standard process to meet new demands force us to validate that new impurity risks do not outweigh the intended benefits. Every proposed tweak must run through internal checks—solubility tests, heat stability, and full panel analysis—before seeing commercial production. In close quarters, technician wisdom and hands-on troubleshooting shape these adaptations to real-world expectations.

    Comparing to Alternatives: The Real Differences

    Alternatives to (+)-Diacetyl-L-Tartaric Anhydride fall into two categories: similar tartaric derivatives with lower stereo control, or chemically different acid anhydrides with broader but less specific reactivity. Generic diacetyl tartaric products, especially those from synthetic racemic sources, bring cost advantages but at the expense of poor control in chiral synthesis. Our research and process audits have shown that blenders and traders, who source from uncertain suppliers, cannot guarantee consistent optical purity. This shortfall means greater risks for pharmaceutical and analytical applications where deviation in chiral purity renders entire batches of high-value downstream products out of spec.

    Compared to mixed anhydrides or those derived from D-tartaric acid, DATAN-0302’s controlled L-configuration translates directly to performance in applications like HPLC derivatization or optically pure intermediate production. Out in the field, analytical chemists note a sharp contrast when switching from non-specific or lower-purity sources; logbooks show tighter precision and lower instrument downtime due to fewer contaminants. On the winemaking front, blends of tartaric derivatives occasionally appear tempting due to price, but they present unforeseen challenges: haze in bottled wines, off flavors through poorly controlled hydrolysis products, and unpredictable tartar stabilization.

    Safety, Handling, and Usability: Drawing from Shop Floor Reality

    The practicalities of working with (+)-Diacetyl-L-Tartaric Anhydride do not escape those running daily production shifts. Safe and effective handling centers on maintaining the anhydride’s integrity: ensuring dry transfer, minimal air exposure, and clean workspaces. In-house, we invest in closed system filling and vacuum transfers, allowing consistent dosing while reducing exposure risks. For external users, clear labeling and guidance on storage temperatures, sealing, and use-by dates carry real value. Unwanted hydrolysis—a constant threat—results from humid conditions, leading to loss of functionality and handling issues in both small and bulk containers.

    Our experience says fresh product works best—so supply chain timing, warehousing temperature, and pack integrity get direct oversight. We respond to questions fast; whether a customer suspects a packaging breach or needs guidance on shelf life, our technical and logistics teams link their knowledge of the chemical’s properties to actionable advice. Many customer complaints upstream trace back to inattentive handling in storage and transit, so training and real-time troubleshooting anchor us as a manufacturer truly behind their product.

    Traceability and Trust: Why Source Matters

    We hold a strong stance that the manufacturing source of chiral reagents is transparent to experienced buyers. Our traceability systems, ISO-driven audits, and data logs reach back to individual lots of tartaric acid. Each shipment tracks back to precursor origin, confirming that grape or beet-derived inputs match regulatory and food safety expectations worldwide. In the global market, supply chain disruptions and broker substitution practices have taught us hard lessons—any break in transparency leads to risk for downstream partners. Major beverage and pharma clients have redefined their supplier qualification systems following episodes with adulterated or substituted inputs in the global commodity stream.

    By opening our records, enabling on-site audits, and maintaining full process documentation, we deliver reassurance beyond a generic certificate of analysis. Stories circulate every season about supply flickers—shipments arriving out of spec due to regional raw material shortages or process shortcuts. We built redundant quality checkpoints and batch reserve samples into our operation, so users can compare batches over years and pull retention samples when needed. This practice boosts long-term trust, crucial for customers using our product as a key step in their flagship processes.

    Driving Improvements: Lessons in Scale and Customer Collaboration

    Long-term experience shows us that scaling up (+)-Diacetyl-L-Tartaric Anhydride production is not a matter of simple equipment or volume increases. Reaction kinetics, impurity removal, energy inputs, and waste management scale nonlinearly. We saw this firsthand moving from pilot-scale to commercial runs: issues invisible in 5 kg batches became dealbreakers at 500 kg. Managing heat removal, acetic acid off-gassing, and product recovery involved retooling vessels, investing in in-line sensors, and overhauling our filtration trains. Our learning curve sharpened not through academic papers, but through real-world stoppages, losses, and day-to-day process improvement cycles.

    Customers play a vital part in shaping production focus. When an international beverage client flagged flavor inconsistencies tied to trace organics, our lab applied batch-specific gas chromatography checks and implemented a feedback loop for process tightness. Pharma partners raised flags about new regulatory guidance on chiral reagent origins, directing us toward deeper supplier collaboration and tighter verification of precursor sourcing. Product development, then, becomes a two-way street, grounded more in direct dialogue than in chasing abstract compliance.

    Challenges and Potential Solutions

    The biggest challenges surrounding (+)-Diacetyl-L-Tartaric Anhydride production and supply today root in tightening regulatory demands, global raw material volatility, and client demand for documentation. Contaminant thresholds for food and pharma are falling each year, prompted by regulators and by user associations with strict standards. Meeting these expectations—while controlling costs—is a daily hurdle. We keep pace through continuous investment in testing capabilities, process improvement protocols, and raw material partnerships secured by transparent data sharing.

    An ongoing issue is controlling the hydrolysis risk post-manufacture, as customers with variable warehousing conditions see the product degrade before reaching application. We tackle this by working hand-in-hand with logistics, developing better pack choices and backup desiccant strategies. Empowering clients with guidance on shelf life and optimal storage—rooted in practical, ongoing data—bridges the gap between our plant and their facility.

    Education stands out in closing the skills gap on the user side. Some incidents, sometimes mistaken for base product defects, really trace to mishandling upon arrival or improper transfer from drum to reactor. Our field representatives carry hands-on, real-world advice to every installation, not just providing the usual manuals but live demonstrations and troubleshooting.

    As global demand for chiral and food-grade reagents grows, we keep our technical knowledge at the forefront, expecting—and meeting—stringent requirements. Being on the manufacturing side means we get the earliest signals about changes in the sector, from revised safety protocols to new analytical instrumentation that can detect a broader impurity spectrum. This feedback, along with years of production logs and customer partnerships, shapes every batch of (+)-Diacetyl-L-Tartaric Anhydride moving out the door.

    The Case For Choosing Sourced Chemistry

    From early tartaric acid selection to final drum loading, our team understands (+)-Diacetyl-L-Tartaric Anhydride at every level because we live its process, errors, and successes daily. We do not just fill orders; we share direct and honest feedback from chemists, operators, and inspectors when customers seek technical assurance or product modification. This mindset builds reliability into the product, far beyond generic or trader stocks lacking reliable support. Expert guidance, batch data, and thorough process mastery stand as our core contributions—reassuring users in beverage, pharma, and analytical fields that they receive genuine DATAN-0302, in the form and purity required for true results.