4-Styrenesulfonic acid sodium salt hydrate
4-Styrenesulfonic acid sodium salt hydrate (CAS: 123333-94-8) is a white crystalline powder with the molecular formula H2C=CHC6H4SO3Na·xH2O. Its anhydrous molar mass is 206.19 g/mol. This anionic polyelectrolyte is primarily utilised in materials science, particularly in micro/nanoelectronics and for creating self-assembled monolayers (SAMs). It serves as a versatile building block for advanced material applications requiring precise surface modification and controlled assembly.

Materials Science
This compound is a key component in advanced materials development. Its structure allows for incorporation into polymers and surfaces to modify properties, contributing to innovations in various fields.
Micro/Nanoelectronics
Utilised in the fabrication of micro and nanoelectronic devices. It plays a role in surface functionalisation and as a component in fabricating specialised materials for electronic applications.
Self-Assembled Monolayers (SAMs)
Acts as a crucial precursor for creating self-assembled monolayers on surfaces. These ordered molecular layers are essential for controlling surface properties in diverse technological applications.
Polyelectrolyte Applications
As an anionic polyelectrolyte, it finds use in applications requiring charged polymer chains, such as in solution processing, surface coatings, and dispersion stabilisation.
| Molecular weight | 206.19 (anhydrous basis) |
|---|---|
| Linear formula | H2C=CHC6H4SO3Na·xH2O |

Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- 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) | 22-36/37/38 |
| Safety statements (S) | 26-36/37 |
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 4-Styrenesulfonic acid sodium salt hydrate used for?
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4-Styrenesulfonic acid sodium salt hydrate is used in materials science, micro/nanoelectronics, and for the creation of self-assembled monolayers (SAMs).
What are the CAS number and chemical formula?
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The CAS number is 123333-94-8 and the chemical formula is H2C=CHC6H4SO3Na·xH2O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this chemical for research and technical applications. The specific assay and purity depend on the batch; it is not represented as USP, BP, EP, or pharmacopoeia grade.
How should this chemical be handled safely?
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Handle with appropriate personal protective equipment, including a dust mask (N95 or equivalent), eyeshields, and gloves. Avoid inhalation of dust and ensure adequate ventilation. This compound is classified as harmful if swallowed and causes skin and eye irritation.
Is this chemical a controlled substance?
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The provided data does not indicate that this chemical is a controlled substance.
How is 4-Styrenesulfonic acid sodium salt hydrate shipped or exported?
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Tech Serve Solutions exports fine chemicals globally, adhering to all relevant shipping and customs regulations for chemical products.
How can I request a sample or quote?
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To request a sample or a quote, please use the contact form on our website or call our sales department directly.
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