Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing admin@sinochem-nanjing.com 3389378665@qq.com
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Thiodiglycolic Acid

    • Product Name Thiodiglycolic Acid
    • Alias TDGA
    • Einecs 226-144-5
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry admin@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
    VTB
    Specifications

    HS Code

    229252

    Chemicalname Thiodiglycolic Acid
    Casnumber 123-93-3
    Molecularformula C4H8O4S
    Molecularweight 168.17 g/mol
    Appearance White solid
    Meltingpoint 121-123 °C
    Boilingpoint Decomposes before boiling
    Solubilityinwater Very soluble
    Density 1.59 g/cm³
    Pka 3.1
    Odor Odorless

    As an accredited Thiodiglycolic Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Thiodiglycolic Acid, 500g, packaged in a sealed amber glass bottle with tamper-evident cap, labeled with safety and handling instructions.
    Shipping Thiodiglycolic Acid should be shipped in tightly sealed, corrosion-resistant containers. It must be protected from moisture, heat, and incompatible substances. Transport should comply with local regulations for hazardous chemicals, include proper labeling, and feature relevant safety data sheets. Handle with care to prevent leaks and environmental contamination during shipping and handling.
    Storage Thiodiglycolic acid should be stored in a cool, dry, and well-ventilated area, away from incompatible substances such as strong oxidizing agents. Keep the container tightly closed and protect from direct sunlight and moisture. Use corrosion-resistant materials for storage vessels. Ensure appropriate labeling and access control to prevent unauthorized handling, and regularly inspect containers for leaks or damage.
    Application of Thiodiglycolic Acid

    Applications of Thiodiglycolic Acid in Industrial Manufacturing

    As an established manufacturer, we support key industries with high-purity thiodiglycolic acid tailored for precise, compliant use in critical formulations. Below, we outline major industrial applications with detailed compliance, process, and product considerations for downstream manufacturers.

    1. Synthesis of Thiol-Containing Pharmaceuticals

    Thiodiglycolic acid serves as an important building block in synthesizing thiol-based drug intermediates, crucial for specific organosulfur APIs. Its unique dicarboxylic and thioether functionality provides targeted reactivity required in customized side-chain modifications found in certain cysteine derivatives and active pharmaceutical intermediates. Pharmaceutical manufacturers demand stringent batch-to-batch reliability and validated impurity profiles to ensure regulatory acceptance of finished APIs, including high-sensitivity HPLC and GC analyses for process control and product release.

    Industry compliance standards

    • ICH Q7: Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • US FDA 21 CFR Part 211 (CGMP for finished pharmaceuticals)
    • EU EMA: EudraLex, Volume 4 (GMP Guidelines)
    • Pharmacopeial references (USP-NF, EP, JP) as process specifications

    Typical usage ratio

    • 0.5%–5% molar ratio relative to key starting amines or alcohols; exact ratio determined by API route and required sulfur incorporation

    Downstream process integration

    • Thiol introduction step during intermediate API synthesis, either via direct condensation or substitution; enters regulated synthesis workshops with validated SOPs and online analytical checks

    Final product types

    • Cysteine analogs (for nephrology and hepatology indications)
    • Thiol-based antioxidants in formulations
    • Pharmaceutical intermediates used in research or CDMO projects
    • Generic thiol-derived APIs with DMF support

    2. Intermediate for Specialty Polymer Manufacture

    In industrial polymerization, thiodiglycolic acid functions as a diacid monomer for thio-ether polyester and polyamide production. Its introduction imparts controlled sulfur bridging, which modifies polymer chain flexibility, solvent resistance, and heat stability. Polymer staff utilize the material in dedicated monomer loading and reactor feeds, tracked by formulation batch sheets and inline viscosity monitoring. End users of these specialty polymers expect tight molecular weight distribution and resistance profiles, especially for custom engineering plastics used in harsh environments.

    Industry compliance standards

    • ISO 9001:2015 (Quality Management System for polymer manufacturing)
    • REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) for monomer use and downstream safety
    • ASTM D638, D790 for mechanical testing of final plastics
    • ROHS 3 (2015/863/EU) for electronics applications

    Typical usage ratio

    • 5–18 mol% as a functional comonomer relative to standard dicarboxylic acids (i.e., terephthalic acid or adipic acid), adjusted by required sulfur modification levels

    Downstream process integration

    • Fed into polycondensation reactors as part of the diacid or diamine mix; loaded and reacted with glycols, diamines, or diols under monitored temperature and vacuum profile; direct impact on polyester or polyamide structure

    Final product types

    • Sulfur-modified engineering plastics for chemical process parts
    • Flexible sulfur-linked polyamides for cable insulation
    • Polyester resins for harsh chemical environments
    • Performance films requiring solvent and abrasion resistance

    3. Corrosion Inhibitor Additive for Water Treatment

    Water treatment plants apply thiodiglycolic acid derivatives as corrosion inhibitor components for closed-loop and industrial cooling systems, especially where conventional phosphate systems may have limitations. The sulfur-containing structure provides strong complexing ability for metal ions such as Fe2+ and Cu2+, reducing oxidation and pitting in re-circulation equipment. Industrial operators blend the additive in technical solution tanks, often customized for system load and metallurgy, with continuous monitoring for dosage and residuals.

    Industry compliance standards

    • ANSI/AWWA B200: Water Treatment Chemical Guidelines
    • ISO 14001: Environmental Management for industrial water facilities
    • REACH registration for water additive chemicals
    • APHA/AWWA/WEF Standard Methods for residuals monitoring

    Typical usage ratio

    • 10–100 ppm active ingredient based on system water volume and measured corrosion rates; plant engineers adjust concentration according to metallurgy and seasonal demand

    Downstream process integration

    • Bulk or batch addition into system water via metering pumps; continuous cycling with monitoring of corrosion potential, pH, and effect on system scaling

    Final product types

    • Industrial-scale closed circulating water systems
    • Heat exchanger corrosion inhibitor formulations
    • Cooling tower water blends for chemical, power, and food plants
    • Chiller system maintenance additives

    4. Intermediate in Electroplating Bath Formulations

    Electroplating chemicals suppliers rely on thiodiglycolic acid as a chelating agent and additive in specialized copper, nickel, and tin plating baths. The compound enhances metal ion stabilization, bath conductivity, and brightness of deposited metal coatings. Plating facilities achieve more uniform layer deposition with improved control over bath aging, especially for high-value electronic and PCB applications. Raw material feeding must meet batch traceability with rigorous impurity and trace metal content specifications.

    Industry compliance standards

    • ISO 9001:2015 for chemical process and QC management
    • IEC 61249-2 for printed board substrate materials
    • RoHS 3 (2015/863/EU) for electronics export compliance
    • REACH registration for plating bath components

    Typical usage ratio

    • 0.01–1 g/L in plating baths, with concentration increments guided by desired deposition rate, substrate type, and end-use brightness requirements

    Downstream process integration

    • Added to electrolyte tanks during make-up and periodic replenishment; checked for consistency using titrimetric and analytical methods; process flow includes filtration and bath temperature regulation

    Final product types

    • Bright copper and nickel plated PCBs
    • Electronic connector surface coatings
    • Decorative metalware with enhanced tarnish resistance
    • Solderable coatings for high-frequency device manufacturing

    5. Component in High-Performance Brake Fluid Formulations

    Automotive and aviation brake fluid compounders employ thiodiglycolic acid as a chain-modifying agent in hydraulic fluid blends, aiming to boost thermal stability, moisture resistance, and lubricity. Its controlled reactivity and compatibility with glycols allow tailored performance, particularly for DOT 4 and specialized aviation fluid formulations demanding consistent response at extreme temperatures. Blending protocols include precision metering, real-time viscosity and boiling point analysis, and robust compatibility testing with typical system elastomers.

    Industry compliance standards

    • FMVSS No.116 (Federal Motor Vehicle Safety Standard for brake fluids)
    • SAE J1703, J1704 (for glycol ether brake fluids)
    • ISO 4925:2015 (International standard for non-petroleum brake fluids)
    • IATA maintenance protocols for aviation hydraulic fluids

    Typical usage ratio

    • 0.1–3% by weight in final fluid, adjusted based on laboratory evaluation of boiling point and corrosion testing in assembled system simulation

    Downstream process integration

    • Fed during fluid blending phase alongside glycol ethers and borate esters; subjected to in-process checks for water content, acid value, and lubricity; followed by batch QA and packaging for distribution

    Final product types

    • DOT 4 automotive brake fluids
    • High-performance aviation hydraulic fluids
    • Specialty brake fluids for racing or heavy-duty equipment
    • Aftermarket brake fluid blends for global supply
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    Competitive Thiodiglycolic Acid prices that fit your budget—flexible terms and customized quotes for every order.

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    Certification & Compliance
    More Introduction

    Thiodiglycolic Acid: Practical Insights from Direct Manufacturing

    Genuine Experience Behind Our Thiodiglycolic Acid

    Thiodiglycolic acid doesn’t get much attention in industry discussions, yet it runs the show quietly in a range of important chemical processes. As a manufacturer who has worked on every step—right from procurement of raw ethylene compounds to purification and shipment—there’s something to be said about what it takes to offer a consistent, high-purity product like this.

    Producing thiodiglycolic acid means more than running a reactor and ticking off analysis reports. Every batch has to meet tight assay standards, usually not less than 99%, with maximum impurity and moisture profiles confirmed each day of the year. In our facilities, process engineers and lab analysts run close checks at each stage, from hydrogen sulfide reactions to crystallization. Any mishap along the line, even a jump in trace chlorides, leads to a halt for corrective cleaning and equipment checks. That kind of discipline pays off. Our customers in electroplating, polymer synthesis, and water treatment have saved plenty of downtime by not getting batches with off odors, discoloration, or unpredictable reaction rates.

    Consistent Quality Yields Reliable Results

    Not all thiodiglycolic acid on the market is made equal. Commercial grades sometimes come with variable water content, inconsistent purity, or traces of unreacted raw materials. Finished quality gets influenced by the water source, age of catalysts, equipment surface fouling, and even the time of year. Our production set-up allows us to compensate for these environmental and process variations through 24-hour analytical checks, and not just at the end of the batch but during every main unit operation.

    A genuinely high assay, clear thiodiglycolic acid with low heavy metal content is the ultimate goal. We target below 10 ppm iron content, less than 0.05% chloride, and ensure the product is free-flowing and colorless with minimal odor. This isn’t done by luck or default—it’s years spent troubleshooting pumps, rewriting cleaning procedures, upgrading condensation trains, and investing in process analytical technology. We stopped using iron piping ages ago, after a single off-colored lot reached a key client. The lesson stuck. That’s why our current runs come out with the right reactivity profiles batch after batch.

    Why Thiodiglycolic Acid Matters in Real Processes

    We see a lot of orders headed for electroplating factories, copper foil works, and clients making custom dispersants. Thiodiglycolic acid is often overlooked until its impact is obvious—a line of parts show odd pitting, or a polymer batch fails a compliance check. This acid acts as a reducing agent, metal chelator, and building block for a range of organic syntheses. In fields like electroplating, even small shifts in the consistency of additive chemistry lead to visible flaws and expensive reruns. Our downstream customers have noticed these details: parts come out with smoother plating, more uniform edges, electrolyte solutions don’t blacken, and there’s none of the mystery haze that comes from poorly controlled lots.

    Polymer and ink manufacturers send us feedback on how our thiodiglycolic acid helps them hit their performance profiles. The presence of clean, high-purity intermediates means better chain control, colorfastness, and shelf stability. This is especially true for water-based dispersants, where trace metallic impurities or extra water—even below a percent—lead to phase separation, spoilage, or gelling. These aren’t theoretical lab problems; they’re daily headaches from our customers, so we keep our process tight to minimize such issues.

    Over the years, we’ve refined the product based on those who actually use it, not just what a spec document says. Our analytical team worked with a resin maker to identify which impurities caused their coatings to fail long-term humidity tests. After multiple tweaks and a couple of pilot campaigns, the recurring failure disappeared—testament to genuine support and iterative problem-solving, not just mail-order fulfillment.

    Batch Consistency and Transparent Traceability

    After seeing dozens of requests for “just send me assay results,” we’ve seen the industry moving to more transparent batch documentation. Transparency is hard to fake if you’re the actual producer. Our operation logs, online chromatograms, and in-house metals screens are always open to end-user audits. Large industrial customers sometimes audit every valve and vessel. Our advantage lies in being able to guarantee where every kilo of acid came from, right down to the shift who packed it. When a customer reports an unexpected lot performance, we trace the raw materials, operator signatures, contamination records, and even nearby maintenance logs. We believe in root-cause correction—not sitting back and blaming freight or warehousing. More than once, our traceability has helped end-users pass unexpected regulatory checks.

    Having hands-on control over the synthesis allows us to be flexible with custom batch sizes, tailored impurity caps, or alternate packaging forms, something that resellers and traders struggle to match. Warehouse stock is kept under controlled temperature and humidity to prevent product yellowing or lumping, which is a major pain point for buyers in warm or sea-adjacent climates. This kind of attention to storage details is usually skipped by dealers passing goods through multiple hands. If a ton of our product arrives discolored or with sediment at your plant, it becomes our direct problem, and we treat it as such.

    Uses and Performance: What Sets Our Product Apart

    User feedback drives us to focus on more than assay numbers. In our plant, we keep an eye out for everything that affects usability: filth, sludge, residue, packing line leakage, or odd smells. Reaching for higher standards, our technical service group has visited industrial plating lines to spot firsthand where trace metallics or a barely perceptible oxygen uptrend in storage tanks led to process drift. No one wants a batch to foam during dissolution due to leftover peroxide traces, or to find a crusty pile at the bottom of their mixing tank. Our processing workflow, from raw sulfur chemical checks to final filtration, is designed to prevent these ‘invisible’ defects.

    We keep our thiodiglycolic acid free from typical contaminants. Standard practice in our sector allows for variable water content, as a shortcut to boost apparent yield and save energy. In our operation, we keep moisture readings to tight boundaries, understanding that even a half-percent above spec creates upset in customers’ application recipes. Users needing stable acid concentrations for precision platings, such as high-end electronics or aerospace parts, tell us their reject rates have dropped after switching to our batches.

    Our acid comes mainly in liquid form, filled in high-density polyethylene drums for bulk users, with optional lined steel for specific solvent compatibility needs. We chose container types only after extensive compatibility and stability checks. For custom blends or tighter specs, we collaborate on process modifications and additional impurity tests, something rarely offered by middlemen. That means less drama at point of use, less guessing about why a process variable shifted, and fewer lost production hours.

    Raw Materials and the In-House Difference

    Every bit of quality starts with the right raw materials. We source from longstanding partners, monitor shipping schedules, and keep redundant supplies on hand. After two cases where unvetted global suppliers shipped off-spec material to the industry, we doubled checks on every delivery. Each lot entering our facility goes through a pre-acceptance checkpoint—checking sulfur source history, confirming unique barcodes on ethylene compounds, and even testing for extraneous organic residues before mixing. As a manufacturer running the synthesis ourselves, responsibility lands firmly with us if these checks aren’t airtight.

    Keeping the skill in-house avoids common headaches seen from dealer-sourced lots—mixing off-grade feedstocks, rewarehousing lapsed goods, or blending lots to mask subpar assay. Our chain of custody is clean. All public certifications and declarations, from ISO process documents to environmental protection steps, come from our own records. Committing to this overhead is not about regulatory ticking; it’s about real-world customer trust, where every buy is backed by technical evidence and operational history.

    Adaptability for New Demands and Regulations

    Environmental and worker safety regulations keep getting tighter, from VOC emissions in chemical works to allowable heavy metals in downstream applications. We receive regular requests for third-party analytical breakdowns, declarations on halogen organics, and kinetic stability profiles. Instead of brushing these off or charging for every data request, we keep an open technical channel for regulatory and custom sustainability checks. Our lab routinely generates customized certificates for REACH, RoHS, and even extended shelf-life demands. Anytime there’s a shift in compliance needs, we modify our process instead of relying on outside tollers to “handle it.”

    Our production teams run regular process audits to check that our effluent treatment meets or outperforms local ordinances. Waste sulfur and wash water get treated at the source before anything heads to collection. These measures keep our operation clean and our customer relationships long-lasting. Over the years, buyers facing tightening European or US regulations have leaned on us to pre-certify supply lines, allowing them to ship finished goods without unnecessary fear of failing a surprise audit. Product consistency supports not just plant uptime but also regulatory peace of mind.

    Technical Support Backed by Real Factory Knowledge

    Questions about process fit, solubility, or impurity thresholds come directly to our in-house chemical team. They know the product because they make it themselves, monitor the titrators, and clean the reactors after every run. This translates to fast, informed answers—no passing the buck or waiting weeks for answers from someone who’s never been on a chemical floor.

    Our technical support isn’t just folks reading a data sheet. They track how each batch performs in different applications and troubleshoot on-site issues instead of delivering repackaged information. For a customer chasing new process chemistry, we can provide application data on the actual lot produced, complete with custom impurity panels. If a solvent or co-monomer has to be adjusted in their formulation, we get feedback and circle back with alternate synthesis routes or drying profiles. Over time, this cycle of information feeds back into our batch process and strengthens future orders for everyone involved.

    Key Differences from Typical Supply Chain Alternatives

    Some customers compare thiodiglycolic acid from independent manufacturers to products sold by traders or distribution houses. Our direct manufacturing brings concrete advantages. We address root issues instantly: no stretched lead times for technical support, no uncertainty about supply chain interruptions, and no puzzle pieces missing from traceability records.

    We don’t mix old and new lots to hit an average purity, which is more common in product sourced through traders. Each batch is uniform, meaning that application-specific adjustments can be counted on to work and processes don’t need to be requalified every time. From the reactor tail to the delivery drum, every step is handled with the end user in mind, not simply for convenience or inventory clearance.

    Direct access to process controls means that requests for ultra-low metal, halogen-free, or moisture-controlled runs are processed internally, tested on in-house equipment, and verified before shipment. Corporate customers sometimes question why a given drum performs better than another bought from a reseller. Our answer comes down to ownership and accountability—it’s not a mystery box arriving from a multi-step distribution chain. Every customer who needs clarification on a technical point has a direct line to the producing engineers, not an intermediary or anonymous warehouse.

    Working with Real-World Challenges Across Industries

    Electroplating isn’t the only sector depending on genuine thiodiglycolic acid quality. Textile dye makers require predictable chelation and minimal off-gassing. In specialty resins and adhesives, batch reproducibility translates directly into profit or waste. Water treatment formulators rely on clean, carefully processed acid to keep sensitive applications running without shutdowns caused by fouling or trace contamination. Supply-chain disruptions or unreliable chemical blends can cause far-reaching problems—process drift, undercured coatings, lost batch records, and customer returns. These are headaches we’ve seen firsthand and worked to solve.

    We supply both bulk and specialty grades, depending on end application needs. Coatings makers usually need very low color and ultra-low metallics. Water treatment operators prioritize long shelf life and absence of fermentation risk. In each case, we fine-tune synthesis and shipping to fit, avoiding the “one grade fits all” trap that traders sometimes fall into. Every change in the field—whether it’s an environmental regulation, a new performance target, or a failure feedback report—feeds into how the next run is managed. We’ve developed and adjusted specialty workflows to match customers’ production environments, not just a specified standard. That attitude comes only from years of dealing directly with manufacturing and application feedback, not from distant trading desks.

    Honest Partnerships Start at the Factory Floor

    The chemical business demands straightforward answers, reliable deliveries, and products that perform with every order. Our team works closely together, from process operators to plant manager to application consultants. Every drum or IBC that leaves our gates has a direct production story and a clear contact trail. Problems get addressed by the same hands that make the product, not shuffled through a maze of resellers.

    Over two decades, our trust in controlled, transparent manufacturing has kept customer confidence high and complaints low. Errors, when they occur, are traced, corrected, and prevented in the next run. This cycle builds true expertise—knowledge that comes from owning the process start to finish, and from genuine engagement with those using the chemistry to keep industries moving. We stand behind each kilogram of thiodiglycolic acid, because every step of its journey passes through our own hands and eyes.

    Future Directions Grounded in Practical Manufacturing

    The world keeps pushing toward cleaner, safer, and more specialized chemical products. Our own plant upgrades, from greener catalysts to solvent recycling, stem from seeing what our customers expect next. Demand grows for tighter impurity specs, eco-friendly processing, extended storage times, and single-source traceability. Having a dedicated manufacturing base allows us to keep pace, building those enhancements into each production shift, not as an afterthought but as a core value. We track the horizon, listen to the chemists, and adjust our process in real time to keep our thiodiglycolic acid relevant and reliable, now and in the years to come.