VINYLSULFONIC ACID

Vinylsulfonic Acid is a highly reactive sulfonic acid monomer used as a hydrophilic, strongly anionic building block for specialty polymers, and Vinylsulfonic Acid is valued for introducing permanent sulfonate functionality that improves water solubility, conductivity, and adhesion in polymer systems.
Vinylsulfonic Acid is used in copolymerization with acrylics, styrenics, and other vinyl monomers to create dispersants, superabsorbent-related copolymers, polyelectrolytes, and functional resins, and Vinylsulfonic Acid performance depends on purity, inhibitor level, polymerization conditions, and neutralization strategy.
Vinylsulfonic Acid is typically supplied as an aqueous solution, and Vinylsulfonic Acid is strongly acidic and corrosive, so handling requires strict PPE, corrosion-resistant equipment, and careful control of polymerization hazards.

CAS Number: 593-88-4
EC Number: 209-812-6
Molecular Formula: C2H4O3S
Molecular Weight: 108.12 g/mol

Synonyms: Vinylsulfonic Acid, Ethenesulfonic Acid, Ethylene Sulfonic Acid (common naming), Vinyl Sulfonic Acid, 2-Propenesulfonic Acid (often confused; verify), VSA, Vinylsulfonic Acid Monomer, Sulfonic Acid Vinyl Monomer, Ethenesulfonic Acid Monomer, Vinylsulfonic Acid Aqueous Solution, Vinylsulfonic Acid Polymer Grade, Vinylsulfonic Acid Intermediate, Vinyl Sulfonate Acid, Ethenesulfonate Acid, 2-Sulfoethylene, 2-Sulfoethene, Sulfoethylene Acid, Sulfoethene Acid, Ethylenesulfonic Acid, Ethylene Sulfonic Acid, Vinylsulfonic Acid Solution, Vinyl Sulfonic Acid Solution, Aqueous Vinylsulfonic Acid, Vinylsulfonic Acid Monomer, Vinyl Sulfonic Acid Monomer, Ethenesulfonic Acid Monomer, Sulfonic Acid Vinyl Monomer, Reactive Vinylsulfonic Acid, Polymerizable Vinylsulfonic Acid, Vinyl Sulfonic Acid Polymer Intermediate, Vinylsulfonic Acid Polymer Intermediate, Acrylic Polymer Modifier Vinylsulfonic Acid, Vinylsulfonic Acid Copolymer Monomer, Vinyl Sulfonic Acid Copolymer Monomer, Ion Exchange Monomer Vinylsulfonic Acid, Conductive Polymer Monomer Vinylsulfonic Acid, Water Treatment Monomer Vinylsulfonic Acid, Textile Auxiliary Vinylsulfonic Acid, Dye Intermediate Vinylsulfonic Acid, Electroplating Additive Vinylsulfonic Acid, Surface Modifier Vinylsulfonic Acid, Dispersant Monomer Vinylsulfonic Acid, Chelating Polymer Monomer Vinylsulfonic Acid, Industrial Vinylsulfonic Acid

APPLICATIONS

Vinylsulfonic Acid is used as a comonomer to introduce sulfonate groups into acrylic copolymers for improved water solubility and electrolyte tolerance.
Vinylsulfonic Acid is incorporated into dispersant polymers to improve pigment wetting and stabilization in waterborne systems.
Vinylsulfonic Acid is used in detergent and cleaner polymers in selected applications to improve scale control and soil dispersion performance.

Vinylsulfonic Acid is used in superabsorbent and hydrogel-related copolymers in selected applications to increase hydrophilicity and ionic swelling behavior.
Vinylsulfonic Acid is incorporated into specialty absorbent polymers where strong anionic charge improves water uptake and retention in compatible designs.
Vinylsulfonic Acid is used in water-swellable resin systems in selected formulations to tune gel strength and ionic responsiveness.

Vinylsulfonic Acid is used in textile and paper processing polymers in selected applications to improve dye uptake, antistatic behavior, and wet strength performance.
Vinylsulfonic Acid is incorporated into sizing or coating polymers to improve adhesion to hydrophilic substrates.
Vinylsulfonic Acid is used in anti-static finishes where sulfonate functionality provides durable conductivity in compatible systems.

Vinylsulfonic Acid is used in waterborne coatings and adhesives in selected applications to improve adhesion, colloidal stability, and ionic compatibility.
Vinylsulfonic Acid is incorporated into latex binders to improve stability in high-electrolyte formulations.
Vinylsulfonic Acid is used in functional binder design where strong anionic groups improve dispersion and substrate interaction.

Vinylsulfonic Acid is used in ion-exchange and polyelectrolyte polymers in selected applications where fixed sulfonate groups provide ionic conductivity.
Vinylsulfonic Acid is incorporated into membranes and functional polymer networks in selected designs to support proton or cation transport behavior.
Vinylsulfonic Acid is valued because Vinylsulfonic Acid provides a direct route to strongly anionic sulfonated polymers with durable charge and high hydrophilicity.

Vinylsulfonic Acid is used as a reactive monomer in specialty polymer synthesis.
Vinylsulfonic Acid introduces sulfonic acid functionality into polymer chains.
Vinylsulfonic Acid is used in the production of water-soluble polymers.
Vinylsulfonic Acid improves hydrophilicity and ionic character in polymer systems.

Vinylsulfonic Acid is used in copolymerization with acrylic monomers.
Vinylsulfonic Acid helps create anionic copolymers for dispersing applications.
Vinylsulfonic Acid is used in emulsion polymerization.
Vinylsulfonic Acid supports particle stabilization through ionic functionality.

Vinylsulfonic Acid is used in water treatment polymer development.
Vinylsulfonic Acid helps produce scale-control and dispersant polymers.
Vinylsulfonic Acid is used in boiler water treatment additives.
Vinylsulfonic Acid supports control of mineral deposits in compatible formulations.

Vinylsulfonic Acid is used in cooling-water treatment formulations.
Vinylsulfonic Acid helps improve calcium carbonate and calcium phosphate dispersion.
Vinylsulfonic Acid is used in detergent polymer systems.
Vinylsulfonic Acid supports soil dispersion and anti-redeposition performance.

Vinylsulfonic Acid is used in textile processing chemicals.
Vinylsulfonic Acid helps create polymers with improved dye and fiber interaction.
Vinylsulfonic Acid is used in dye-fixing and dye-assist formulations.
Vinylsulfonic Acid supports ionic binding behavior in selected textile systems.

Vinylsulfonic Acid is used in paper coating additives.
Vinylsulfonic Acid helps improve pigment dispersion in aqueous paper systems.
Vinylsulfonic Acid is used in pulp and paper process chemicals.
Vinylsulfonic Acid supports scale control and deposit management in process water.

Vinylsulfonic Acid is used in cement and construction chemical additives.
Vinylsulfonic Acid helps produce dispersant polymers for mineral slurries.
Vinylsulfonic Acid is used in concrete admixture development.
Vinylsulfonic Acid supports flow improvement in compatible cementitious systems.

Vinylsulfonic Acid is used in pigment dispersion systems.
Vinylsulfonic Acid helps improve wetting and stabilization of inorganic particles.
Vinylsulfonic Acid is used in coating polymer development.
Vinylsulfonic Acid introduces ionic sites that improve water compatibility.

Vinylsulfonic Acid is used in adhesive polymer modification.
Vinylsulfonic Acid helps adjust polarity, adhesion, and water dispersibility.
Vinylsulfonic Acid is used in ion-exchange resin development.
Vinylsulfonic Acid provides strongly acidic functional groups for ion-binding applications.

Vinylsulfonic Acid is used in membrane polymer research.
Vinylsulfonic Acid supports development of ion-conductive and hydrophilic membranes.
Vinylsulfonic Acid is used in proton-conducting polymer studies.
Vinylsulfonic Acid contributes sulfonic acid groups for proton transport.

Vinylsulfonic Acid is used in fuel-cell membrane research.
Vinylsulfonic Acid helps create sulfonated polymer structures with ionic conductivity.
Vinylsulfonic Acid is used in hydrogel polymer development.
Vinylsulfonic Acid increases water uptake and ionic swelling behavior.

Vinylsulfonic Acid is used in superabsorbent polymer research.
Vinylsulfonic Acid supports development of highly hydrophilic polymer networks.
Vinylsulfonic Acid is used in biomedical polymer research.
Vinylsulfonic Acid helps introduce charged groups into experimental polymer materials.

Vinylsulfonic Acid is used in antistatic polymer formulations.
Vinylsulfonic Acid supports ionic conductivity in selected polymer systems.
Vinylsulfonic Acid is used in electrochemical material research.
Vinylsulfonic Acid contributes acidic and ionic functionality to conductive polymer blends.

DESCRIPTION

Vinylsulfonic Acid is an unsaturated sulfonic acid monomer, and Vinylsulfonic Acid participates readily in free-radical polymerization to form sulfonated polymer backbones or sulfonated copolymers.
Vinylsulfonic Acid introduces permanent sulfonate functionality, and sulfonate groups remain ionized over a wide pH range, supporting stable polyelectrolyte behavior and strong hydrophilicity.
Vinylsulfonic Acid is often supplied as an aqueous solution, and solution concentration and inhibitor content influence storage stability and polymerization control.

Vinylsulfonic Acid can be neutralized partially or fully with bases to form vinylsulfonate salts, and neutralization strategy affects polymerization rate, heat release, and final polymer properties.
Vinylsulfonic Acid is strongly acidic and corrosive, and Vinylsulfonic Acid can cause severe irritation or burns on contact, so strict handling controls are required.
Vinylsulfonic Acid can polymerize exothermically, and uncontrolled polymerization is a process hazard, so temperature control, inhibitor management, and contamination prevention are critical.

Vinylsulfonic Acid should be stored in corrosion-resistant containers, kept tightly closed, and protected from heat to reduce polymerization risk and maintain specification.
Vinylsulfonic Acid should be kept away from strong oxidizers and incompatible reactive chemicals, and mixing with bases should be controlled because neutralization releases heat.
Vinylsulfonic Acid should be used according to applicable regulations and good industrial hygiene practices for the target market and facility.

Vinylsulfonic Acid is an organosulfur compound containing both vinyl and sulfonic acid groups.
Vinylsulfonic Acid is a strongly acidic reactive monomer.
Vinylsulfonic Acid is usually handled as an aqueous solution because the pure material can be reactive.
Vinylsulfonic Acid is valued for introducing sulfonic acid functionality into polymers.

Vinylsulfonic Acid can participate in free-radical polymerization through its vinyl group.
Vinylsulfonic Acid can copolymerize with acrylic, vinyl, and other unsaturated monomers.
Vinylsulfonic Acid produces polymers with strong anionic character after incorporation.
Vinylsulfonic Acid increases water solubility and hydrophilicity in polymer systems.

Vinylsulfonic Acid is highly polar because of its sulfonic acid group.
Vinylsulfonic Acid forms salts with bases and metal ions.
Vinylsulfonic Acid is corrosive in concentrated form or strong acidic solutions.
Vinylsulfonic Acid should be handled with suitable protective equipment.

Vinylsulfonic Acid performance depends on concentration, inhibitor level, pH, temperature, and polymerization conditions.
Vinylsulfonic Acid may require stabilization to prevent unwanted polymerization during storage.
Vinylsulfonic Acid should be protected from excessive heat and incompatible materials.
Vinylsulfonic Acid should be stored in tightly closed containers.

Vinylsulfonic Acid should be used with good ventilation and appropriate chemical handling procedures.
Vinylsulfonic Acid may irritate or damage skin, eyes, and respiratory passages.
Vinylsulfonic Acid should be used according to supplier safety data and regulatory requirements.
Vinylsulfonic Acid quality may be defined by active content, acidity, color, inhibitor content, and impurity profile.

PROPERTIES

Chemical Formula: C2H4O3S
Molecular Weight: 108.12 g/mol
Common Name: Vinylsulfonic Acid (VSA)
Chemical Type: Sulfonic acid monomer; anionic functional comonomer; polyelectrolyte building block
Appearance: Clear to slightly yellow liquid (typically as aqueous solution)
Odor: Slight to pungent (grade dependent)
Solubility: Miscible with water (typical supplied form)
Acidity: Strong acid; highly corrosive (concentration dependent)
Reactivity: Readily polymerizes by free-radical mechanisms; inhibitor control important
Stability: Stable under recommended storage with inhibitor; risk of polymerization increases with heat/contamination
Storage Temperature: 5–25°C, tightly closed, protect from heat and contamination
Shelf Life: Typically 6–18 months in original sealed packaging (supplier dependent)

FIRST AID

Inhalation:
Move to fresh air immediately.
Seek medical attention if coughing, burning sensation, or breathing difficulty occurs.
Avoid exposure to mists or vapors from concentrated solutions.

Skin Contact:
Remove contaminated clothing immediately and rinse skin with plenty of water.
Wash with soap and water after thorough rinsing.
Seek medical attention promptly for burns or persistent irritation.

Eye Contact:
Rinse cautiously with water for at least 15 minutes.
Remove contact lenses if present and easy to do, then continue rinsing.
Seek immediate medical attention because corrosive eye injury is possible.

Ingestion:
Rinse mouth with water and do not induce vomiting.
Seek immediate medical attention or contact a poison center.
Never give anything by mouth to an unconscious person.

Note to Physicians:
Treat symptomatically.
Manage corrosive exposure and monitor for delayed tissue injury.
Provide supportive care as needed.

HANDLING AND STORAGE

Handling:
Use appropriate PPE including acid-resistant gloves, goggles or face shield, and protective clothing.
Avoid inhalation of mist and avoid skin and eye contact because the material is strongly acidic.
Use corrosion-resistant pumps, lines, and containers, and maintain closed transfer where possible.

Ventilation:
Use local exhaust ventilation to control mists and vapors.
Avoid handling in confined spaces without adequate airflow.
Use appropriate respiratory protection if mist generation cannot be controlled.

Storage:
Store in tightly closed, corrosion-resistant containers in a cool area away from heat and sunlight.
Protect from contamination, especially peroxides, initiators, metal salts, or other polymerization catalysts.
Keep away from strong oxidizers and store separately from bases to prevent accidental neutralization.

Spill and Leak Procedures:
Contain spill with inert absorbent suitable for acids.
Neutralize carefully only if trained and permitted by facility procedure because neutralization releases heat.
Prevent entry into drains and dispose of waste according to local regulations and facility procedures.

Handling Precautions:
Control polymerization risk because Vinylsulfonic Acid can polymerize exothermically if overheated or contaminated.
Control neutralization because adding base can release heat and cause splashing, so add slowly with cooling and agitation.
Rotate stock using FIFO practices to maintain inhibitor effectiveness and consistent monomer performance.