Sodium 4-vinylbenzenesulfonate
Sodium 4-vinylbenzenesulfonate (CAS: 2695-37-6; Formula: C8H7NaO3S; Molar Mass: 206.19) is a versatile organic compound. It functions as a crucial building block in chemical synthesis, particularly in polymer chemistry due to its vinyl group. This sulfonic acid salt finds utility in the preparation of specialty polymers, copolymers, and functional materials, contributing unique properties to end products. Its application is primarily within research and industrial chemical processes.
- IUPAC
- 4-Vinylbenzenesulfonic acid sodium salt,Styrene-4-sulfonic acid sodium salt

Polymer Synthesis
Sodium 4-vinylbenzenesulfonate serves as a monomer or co-monomer in the synthesis of polymers. The vinyl group readily participates in polymerization reactions, allowing for the incorporation of sulfonate functionalities into polymer chains.
Functional Materials
It is used in the development of functional materials, such as ion-exchange resins or membranes, by introducing ionic sulfonic acid groups into polymer architectures.
Specialty Chemicals
This compound acts as an intermediate in the synthesis of various specialty chemicals where a vinylbenzene sulfonate moiety is required.
| Molecular weight | 206.19 |
|---|---|
| Empirical formula | C8H7NaO3S |
| Assay | ≥90% (T) |
| Melting point | ≥300 °C |


Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H318Causes serious eye damage
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-37/38-41 |
| Safety statements (S) | 26-36/37/39 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Sodium 4-vinylbenzenesulfonate used for?
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Sodium 4-vinylbenzenesulfonate is primarily used as a building block in chemical synthesis, particularly for the creation of polymers and functional materials through polymerization reactions.
What is the CAS number and formula for Sodium 4-vinylbenzenesulfonate?
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The CAS number for Sodium 4-vinylbenzenesulfonate is 2695-37-6, and its empirical formula is C8H7NaO3S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Sodium 4-vinylbenzenesulfonate with an assay of ≥90% (T). We do not represent this product as USP, BP, EP, or other pharmacopoeia grades.
How should Sodium 4-vinylbenzenesulfonate be handled safely?
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Due to its hazardous properties, including potential harm if swallowed, skin and serious eye irritation, and respiratory irritation, handle Sodium 4-vinylbenzenesulfonate with appropriate personal protective equipment such as a dust mask (N95), eyeshields, and gloves. Ensure good ventilation.
How is Sodium 4-vinylbenzenesulfonate packed and exported?
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Sodium 4-vinylbenzenesulfonate is carefully packed and prepared for export according to international shipping regulations to ensure safe transit.
How can I request a sample or quote for Sodium 4-vinylbenzenesulfonate?
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To request a sample or a quotation, please contact our sales team through the website or direct inquiry channels, providing your specific requirements.
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