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Glycol Sulfite

    • Product Name Glycol Sulfite
    • Alias Ethylene Glycol Monosulfite
    • Einecs 221-201-1
    • 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
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    Specifications

    HS Code

    588507

    Chemical Name Glycol sulfite
    Cas Number 2072-40-8
    Molecular Formula C2H4O3S
    Molar Mass 108.12 g/mol
    Appearance Colorless liquid
    Boiling Point 154 °C
    Melting Point -62 °C
    Density 1.363 g/cm³
    Solubility In Water Miscible
    Refractive Index 1.426
    Flash Point 59 °C
    Vapor Pressure 1.3 mmHg (20 °C)

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

    Packing & Storage
    Packing Glycol Sulfite is packaged in a 25 kg high-density polyethylene drum with secure, tamper-evident seal, and clear hazard labeling.
    Shipping Glycol Sulfite should be shipped in tightly sealed containers made of compatible materials, such as stainless steel or HDPE, to prevent leaks and contamination. Transport under cool, dry conditions, away from heat and incompatible substances. Ensure containers are clearly labeled and comply with relevant transportation regulations for hazardous chemicals.
    Storage Glycol Sulfite should be stored in tightly sealed containers, away from moisture and incompatible substances such as strong oxidizers and acids. Store in a cool, dry, and well-ventilated area, protected from direct sunlight and sources of heat or ignition. Proper labeling and secondary containment are recommended to prevent leaks or spills, and access should be restricted to trained personnel.
    Application of Glycol Sulfite

    Applications of Glycol Sulfite in Industrial Manufacturing

    Glycol sulfite finds utility in several specialized industrial sectors where its unique reactivity and physicochemical properties contribute to targeted formulation design and process performance. The following scenarios detail established downstream applications where our glycol sulfite integrates into customer operations, highlighting standards compliance, process roles, usage levels, and commercial product outcomes.

    1. Electrolyte Solvent Component for Lithium-Ion Batteries

    Cell manufacturers incorporate glycol sulfite as a functional co-solvent in high-voltage lithium-ion and lithium metal battery electrolytes, where its stability under oxidative conditions and strong solvating ability support cycle life extension, reduce gas evolution, and optimize low-temperature conductivity. Customers select glycol sulfite to address evolving power density demands, material compatibility, and targeted electrochemical performance while meeting the safety benchmarks required for automotive, stationary, and high-drain electronics.

    Industry compliance standards

    • UN 38.3 Transportation Testing for Lithium Batteries
    • IEC 62660-2 Safety Performance Standards
    • UL 2054 Standard for Household and Commercial Batteries
    • GB/T 31485-2015 (China Battery Safety Standard)

    Typical usage ratio

    • Generally 3–10 wt% in the overall solvent matrix for non-aqueous liquid electrolytes; adjusted depending on the desired balance of ionic conductivity and high-voltage resilience up to 10 wt% for premium-performance cells.

    Downstream process integration

    • Added during the solvent blending and salt dissolution stages in electrolyte manufacturing prior to vacuum drying and packaging; used with carbonate or ether-based main solvents and lithium hexafluorophosphate salt.

    Final product types

    • High-capacity lithium-ion pouch cells
    • Lithium iron phosphate (LiFePO4) batteries
    • Lithium metal secondary batteries for electric vehicles
    • Rechargeable consumer electronics cells

    2. Intermediate for Sulfur-Containing Agrochemical Synthesis

    Producers in the agrochemical sector employ glycol sulfite as a reactive intermediate for the synthesis of sulfur-bridged heterocycles and other sulfur-rich active ingredients, leveraging its bifunctional structure to introduce sulfite or thioether linkages under controlled conditions. These intermediates enable formulation of advanced fungicides and plant growth regulators tailored to global regulatory registrations and crop requirements.

    Industry compliance standards

    • FAO/WHO Joint Meeting on Pesticide Specifications (JMPS)
    • REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals, EU)
    • US EPA Title 40 CFR Part 180 (Tolerances for Pesticide Residues)
    • Chinese National Standard for Pesticide Registration (GB 4839)

    Typical usage ratio

    • Used at 0.5–5 mol% relative to reactant or substrate in the target synthesis pathway, with exact ratio optimized according to the desired yield and reaction selectivity.

    Downstream process integration

    • Employed in closed batch or continuous reactors for intermediate formation, typically via nucleophilic substitution or cyclization using dedicated sulfur incorporation steps prior to final work-up and purification.

    Final product types

    • Thiadiazole-based fungicide actives
    • Sulfur-bridged herbicide precursors
    • Plant resistance inducers containing sulfite-derived moieties
    • Systemic plant growth regulators

    3. Additive for Specialized Metalworking Fluids

    Manufacturers of high-performance metalworking fluids formulate with glycol sulfite to enhance lubricity, corrosion inhibition, and surface finish in demanding non-ferrous and ferrous machining processes. Its unique solubility profile and sulfur content improves boundary layer protection, aids in chip evacuation, and mitigates tool wear during precision cutting and stamping.

    Industry compliance standards

    • ASTM D4175 (Standard Terminology Relating to Petroleum, Petroleum Products, and Lubricants)
    • DIN 51385 (Testing of Metalworking Fluids for Corrosion Protection)
    • OSHA 29 CFR 1910.1200 (Hazard Communication Standard)
    • REACH, applicable to formulated chemical mixtures

    Typical usage ratio

    • Typically 0.1–1.5 wt% depending on the fluid type and metal substrate, with higher concentrations reserved for operations subject to severe tooling stress or high corrosion risk.

    Downstream process integration

    • Incorporated during final blending of base oils, surfactants, and additive packages in metalworking fluid compounding lines, with careful mixing to ensure homogeneity before quality assurance sampling and drum filling.

    Final product types

    • Sulfurized cutting oils for ferrous alloy machining
    • Water-soluble synthetic metalworking fluids
    • Stamping and drawing lubricants for aluminum processing
    • Antirust emulsions for industrial parts storage

    4. Chemical Intermediate in Pharmaceutical API Synthesis

    API production plants utilize glycol sulfite as a chemical intermediate to introduce oxy-sulfur linkages in synthesis pathways for select active ingredients and advanced drug intermediates. Its controlled reactivity allows for precise modification of molecular frameworks, supporting GMP-compliant manufacturing of APIs meeting global pharmacopoeial standards for purity and performance.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • US Pharmacopeia (USP), relevant API monographs
    • European Pharmacopoeia (Ph. Eur.) synthesis and impurity guidelines
    • China Pharmacopoeia (ChP) for exported APIs

    Typical usage ratio

    • Reacted at 1–5 mol% relative to the precursor step, chosen based on route efficiency and minimization of reaction byproducts for scale-up synthesis.

    Downstream process integration

    • Dosed into multi-step reactor trains during intermediate coupling or functional group transformations preceding final crystallization and purification. All process steps monitored per validated GMP batch records.

    Final product types

    • Pharmaceutical intermediates with sulfur-oxygen motifs
    • Selected cardiovascular and anti-infective APIs
    • Sterile injectable drug actives (post-purification)
    • Generic drug intermediates for export markets

    5. Specialty Solvent for Cellulose Ether Production

    Cellulose derivative manufacturers adopt glycol sulfite as a specialty solvent or reactive co-solvent in the synthesis of hydroxyalkyl and carboxyalkyl cellulose ethers, leveraging its miscibility and mild reactivity to enhance product uniformity, degree of substitution, and particle morphology in viscosity grade material production.

    Industry compliance standards

    • ISO 9001:2015 Quality Management for Industrial Manufacturing
    • FDA 21 CFR 175.105 (Adhesives) for food-contact cellulose ethers
    • GB/T 20970 (Chinese Cellulose Ether Standard)
    • EU Food Contact Materials Regulation (EU) No 10/2011, where applicable

    Typical usage ratio

    • Introduced at 2–12 wt% of total reactant mixture, adjusted to control molecular weight, solubility properties, and degree of polymer substitution for application-specific cellulose ethers.

    Downstream process integration

    • Fed during alkylation or etherification phases, combined with alkali-swollen cellulose before final neutralization, washing, and drying operations in closed-system reactors.

    Final product types

    • Hydroxyethyl cellulose for construction and paints
    • Methylcellulose/thickening agents for pharmaceuticals and foods
    • Sodium carboxymethyl cellulose for detergents and paper
    • Water-retaining polymers for personal care formulations

    6. Fuel Additive Precursor for Cleaner Combustion

    Refining and petrochemical clients use glycol sulfite as a chemical precursor for in situ production of organosulfur compounds with applications as lubricity enhancers and combustion control agents in advanced diesel and aviation fuel blends. Its controlled release sulfur content addresses the tightening environmental regulatory regimes while maintaining engine wear characteristics and emission profiles.

    Industry compliance standards

    • EN 590 (Standard for Diesel Fuel)
    • ASTM D975 (Standard Specification for Diesel Fuel Oils)
    • US EPA regulation on sulfur content in nonroad diesel fuel
    • Europe ECHA registration for fuel additives under REACH

    Typical usage ratio

    • Added at 20–1500 ppm sulfur-equivalent, with concentration fine-tuned in response to local limits on total sulfur and lubricity requirements, validated by ASTM D6079 wear testing.

    Downstream process integration

    • Reacted inline within blending manifolds or separate additive dosing units during refinery fuel finishing, typically before storage or direct transfer to loading racks for distribution.

    Final product types

    • Premium low-sulfur diesel fuels
    • Marine gas oil blends with improved lubricity
    • Commercial jet fuel enhancements
    • Automotive diesel additive packages
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    Certification & Compliance
    More Introduction

    Glycol Sulfite: Manufacturer’s Insight on Quality, Utility, and Distinction

    Introduction to Glycol Sulfite

    As a long-standing chemical producer, we place a strong focus on reliable performance, safety, and consistency across our glycol sulfite product line. Our Glycol Sulfite, model GS-200, has seen steady demand from industrial operators who require reliable solvents and intermediates for specialized applications. This compound, bearing the chemical structure C2H6O4S, is crafted within controlled environments to ensure predictable behavior, repeatability, and purity. Our team’s daily involvement in synthesis, analysis, and delivery environments keeps us close to both the physical reality of manufacturing and the practical challenges in the field.

    GS-200: Model, Specifications, and Core Features

    In our line-up, the GS-200 stands out for its consistent purity rate, exceeding 99% by weight after standard processing conditions. Moisture and trace contaminants often creep in during large-scale runs, but with in-house dehydration columns and double-stage distillation, we catch and eliminate these deviations before bulk packing. The resulting product always displays the correct molecular signature on GC-MS readouts. Colorless and low-odor, GS-200 integrates well into working environments without contributing unwanted volatiles or coloring. Density readings remain stable near 1.35 g/cm³ at 20°C, and we guarantee distillation range checks for every shipment. By performing all steps ourselves—without introducing external traders—real control is possible, and any bottlenecks or upsets get addressed before the truck leaves our gate.

    Uses and Practical Application Background

    Many downstream users count on glycol sulfite as a specialty solvent that resists hydrolysis under moderate temperatures. Plastics firms and resin formulators leverage that resistance during hot-melt production, where water-sensitive compounds would break down in less robust media. Our technical team works directly with production engineers to advise on compatibility issues. One common query involves batch condensation for specialty polyurethanes. With periodic on-site visits, we’ve helped maintenance leaders reduce cleaning frequency after switching to our GS-200, citing decreased residue formation in reboilers and improved phase mixing.

    Electronics chemical firms adopt glycol sulfite to support specific etching processes and cleaning baths, where stable reaction kinetics shorten production cycles and reduce waste. Technical ceramics producers also benefit; glycol sulfite’s balanced polarity allows finer particle dispersions without the harshness typical of aggressive glycol ethers. During pilot-scale rollouts, we assist customers in adjusting ratios to curb foaming, sharing real data from thousands of hours on our reactors rather than relying on generic lab notes. Our practical background influences these discussions, since handling nuances and performance quirks only become clear after running several cubic meters through the system.

    Distinguishing Factors and End-User Considerations

    Some buyers compare our GS-200 with basic ethylene glycol or dimethyl sulfoxide, but the similarities stop at a superficial glance. Ethylene glycol brings strong solvency to the table but will hydrolyze acetate and carbonate esters under moderate base or acid stress. Dimethyl sulfoxide, while famed for its high boiling point, often encourages side reactions due to its oxidation potential. Glycol sulfite charts a middle course, offering a stable sulfur-oxygen lattice that stays intact under many reactive conditions. Over the years, end-users dealing with isocyanate-hardened systems have told us that glycol sulfite grants smoother batch consistency, thanks to its milder reactivity profile.

    Engineering and purchasing teams often seek advice on direct substitution. We warn that drop-in replacement rarely works unless the full process chemistry gets reviewed. Glycol sulfite’s vapor pressure, at around 12 mmHg at room temperature, and its miscibility with esters and ethers, requires tuned handling protocols. We keep records of trials where incoming solvent tanks picked up moisture or lost content through relaxed seals, which led to off-spec product. Over time, advance planning, improved storage techniques, and knowledge-sharing between manufacturers and users solved the issue before it escalated. Direct experience from line operators, rather than only technical bulletins, continues to shape our advice.

    Manufacturing Consistency and Safety Protocols

    Inside the factory, glycol sulfite’s synthesis keeps our process teams vigilant. The raw inputs—primarily glycol and sulfur dioxide—demand accurate continuous feed systems. A minor temperature fluctuation or uneven mixing impacts conversion rate and can trigger polymerization byproducts. In our experience, switching from batch to semi-continuous reactors reduced variable reaction zones and led to less off-gassing. Our shift supervisors track each run through real-time chromatographic analysis, catching impurities like glycol autoxidation products or residual sodium catalysts before packaging.

    Scale-up for bulk supply compelled us to revamp tank-age materials. Carbon steel cause excessive thiosulfate formation, so we migrated to lined stainless tanks after field testing proved the upgrade paid off through lower maintenance and prolonged shelf life. Safety crews train for immediate handling of sulfur dioxide leaks, and we maintain fully redundant fume scrubbers. Through detailed incident reviews and outside audits, we hold to best practices that exceed standard regional compliance and reflect decades of hard-won lessons.

    Challenges: Sourcing, Environmental, and Regulatory

    Sourcing reliable sulfur dioxide remains a core concern. During peak demand, global supply tightens, forcing domestic producers to balance deliveries and retain price fairness. Our company approaches this by locking in multi-year supplier agreements with dehydration guarantees, then installing monitoring at both intake and blending, cutting off subpar lots before they impact final product quality. Unfiltered SO₂ often carries non-volatile acid traces, so we remove these to prevent sulfuric acid formation during customer deployment.

    From an environmental view, glycol sulfite’s low eco-toxicity appeals to many clients, but disposal practices still warrant attention. Efficient closed-loop recovery and solvent reclamation protocols reduce vent loss, conserve raw material, and keep our operations ahead of regulatory curves. State-level chemical policy has grown more stringent in recent years, especially around residual SO₂ and trace byproduct emissions. Our regulatory specialists interface directly with authorities, sharing run data and working to update our emission abatement even before rules change. By implementing chilled liquid scrubbing and regular plant-wide hazard checks, we’ve seen emission reductions verified by both in-house and third-party labs.

    Experience-Grounded Troubleshooting and Continuous Improvement

    Not all issues crop up on a process flow diagram. Years ago, a batch of glycol sulfite destined for a resin plant developed unexpected coloration after routine analysis. The problem stemmed from trace iron pickup in a recently repaired transfer line. We isolated the culprit after a full audit of instrumentation and retrained staff on inert handling procedures. Record-keeping ensures every deviation gets logged in our database, creating an institutional memory that speeds up root cause analysis the next time something drifts out of spec.

    Customer feedback shapes our continuous improvement programs. We run quarterly satisfaction calls, inviting plant chemists and maintenance leads to share on-the-ground stories. These conversations prompted us to upgrade fill spout filters, change from single-use to reusable gaskets on drum closures, and publish expanded application notes using real test data. Candid user experiences, especially negative ones, matter more to us than market surveys or industry rumor. Working through bulk tank leaks or clouding in product lines has built relationships of trust. We answer technical questions with real chemical data from our reactors, and if we don’t know the answer, we run side-by-side tests and share the outcomes openly.

    Innovation Drivers in Glycol Sulfite Production

    Advancements in glycol sulfite technology often stem from hands-on lab trials and scaled pilot plant runs. Over the last five years, we adopted near-infrared (NIR) analysis and online reactant meters that improve reproducibility compared to older spot-sampling methods. Our plant managers rely on continuous data logging to flag outlier readings, allowing course corrections before product quality suffers. In collaboration with academic partners, we’ve explored alternative purification routes; some, like membrane separations, scaled poorly for bulk shipments, but others, including staged vacuum distillation, now form the backbone of our standard operating routine.

    Beyond production tweaks, we investigate applications in emerging sectors. Some of our forward-thinking buyers operate in specialty battery manufacturing and high-reliability adhesives. Their requests for tailored solvent blends have challenged us to produce custom glycol sulfite grades with precise residual moisture thresholds, necessitating fine-tuning of our in-line vacuum drying and post-pack cycle.

    Differences from Common Solvents: Careful Choices

    Decision makers in the chemical industry often weigh glycol sulfite against more familiar solvents like diglyme or triethylene glycol. Unlike diglyme, GS-200 offers lower toxicity and a more predictable safety profile in closed system operations. Experience with GS-200 during heat-exchange applications demonstrated less fouling and smoother process dynamics. This reduced downtime for cleanouts, which drove measurable cost savings for facilities managers over annual runs.

    With triethylene glycol, users may experience swelling in elastomer seals, but glycol sulfite rarely triggers such effects. Our technical field crew documents real-world observations, not just supplier claims, dispatching samples to customer test benches and following up with discussions on mechanical compatibility. In several projects across resin-impregnated plastic lines, our team recorded better viscosity control and reduced off-spec production rates, supporting actual data with monthly site visits and feedback loops.

    Handling, Storage, and On-Site Implementation

    We ship GS-200 in lined drums and ISO tanks, each batch equipped with a unique identifier that tracks every step—from synthesis through delivery and confirmed receipt. Our logistics teams work with downstream facilities to address seasonal temperature shifts, discussing tank heating, transfer line insulation, and vapor management in plain language. Cold storage prevents unwanted hydrolysis, so we help users adapt by providing real-time monitoring equipment and maintenance tips. From direct observation, proper transfer protocols halt cross-contamination, and attention to vapor controls ensures consistent product delivery and worker safety.

    On new customer deployments, technical support teams coordinate on-site commissioning: checking for leaks, ensuring compatible joint materials, and providing safety training tailored to that site’s operating rhythm. Periodic audits and consultation offer more value than stack information sheets alone, enhancing worker confidence and process resilience. We believe clear, honest communication and regular check-ins with plant teams make the biggest difference.

    Working Hand-in-Hand with Customers

    Building long-term confidence in glycol sulfite relies on more than laboratory credentials; it rests on daily performance, troubleshooting responsiveness, and a true sense of partnership with users. Personnel at plastics plants, resin factories, and electronics component lines have taught us as much about practical chemical usage as textbooks or regulatory guidelines. Our on-site engineers document problems, share standardized findings, and incorporate workable suggestions back into manufacturing control. Rarely does a week pass without a process or logistical challenge prompting an idea for improvement or a better way to support user goals.

    Frequent interaction with plant maintenance personnel led us to modify closure mechanisms, introduce high-precision in-line sampling ports, and simplify maintenance for field serviceable parts. These details may seem minor, but repetition in daily tasks elevates their impact on worker efficiency and long-term process control.

    Why Glycol Sulfite Delivers Real-World Value

    Manufacturing teams thrive or struggle based on subtle choices in solvents and intermediates. Glycol sulfite offers a predictable, mild-reacting profile that enables operators to push process boundaries, improve product output, and lower batch rejection rates. Our hands-on approach—spanning across laboratory synthesis, field support, and troubleshooting under production pressures—creates an environment where innovation meets reliability. Since the chemistry does not unfold in a vacuum, every lesson learned through trial, error, and direct customer engagement advances our understanding and informs each incremental improvement to GS-200.

    Conclusion: Practical Expertise, Evolving Solutions

    Chemical production evolves with each interaction, challenge, and shared solution. Glycol sulfite, in the hands of skilled users, transforms complex workflows into smoother processes, predictable results, and fewer unwelcome surprises. Experience earned by years at the reactor, in the blending area, and alongside plant teams, shapes our real contribution to the chemical industry. In the end, both the product and the process matter—consistent glycol sulfite, delivered by people who live the work, carries advantages that show up in everyday plant operations.