4-Bromobenzenesulfonic acid monohydrate
4-Bromobenzenesulfonic acid monohydrate (CAS: 79326-93-5), with the chemical formula BrC6H4SO3H · H2O and a molecular weight of 255.09 g/mol, is a key organic building block. This sulfonic acid derivative serves as a valuable intermediate in various chemical synthesis pathways, particularly in the development of complex organic molecules and specialty chemicals. Its reactive nature makes it suitable for a range of research and industrial applications.

Organic Synthesis Intermediate
Utilised as a versatile intermediate in the synthesis of more complex organic compounds. It provides a brominated aromatic sulfonic acid moiety for further functionalisation in multi-step reactions.
Pharmaceutical Research
Serves as a building block in the exploratory synthesis of potential pharmaceutical agents. Its structure can be incorporated into molecules designed for specific biological targets.
Specialty Chemical Development
Employed in the creation of specialty chemicals where the unique properties of a brominated sulfonic acid are required. This may include dyes, polymers, or other advanced materials.
| Molecular weight | 255.09 |
|---|---|
| Linear formula | BrC6H4SO3H · H2O |
| Assay | 98% |
| Melting point | 90-93 °C(lit.) |

Hazard statements
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 3261 8 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 34 |
| Safety statements (S) | 22-26-36/37/39-45 |
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-Bromobenzenesulfonic acid monohydrate used for?
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This compound is primarily used as a building block and intermediate in organic synthesis, including pharmaceutical research and specialty chemical development.
What are the CAS number and formula for 4-Bromobenzenesulfonic acid monohydrate?
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The CAS number is 79326-93-5, and the chemical formula is BrC6H4SO3H · H2O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Bromobenzenesulfonic acid monohydrate with an assay of 98%. We do not represent this product as USP, EP, BP, or pharmacopoeia grade.
How should 4-Bromobenzenesulfonic acid monohydrate be handled safely?
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This compound is classified as Danger (GHS05) and causes severe skin burns and eye damage (H314). Appropriate personal protective equipment, including eyeshields, gloves, and respiratory protection, must be worn. Handle only in a well-ventilated area.
How is 4-Bromobenzenesulfonic acid monohydrate packed, shipped, and exported?
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As a specialist global supplier and exporter since 1998, Tech Serve Solutions adheres to all relevant regulations for packing, shipping, and exporting fine chemicals like 4-Bromobenzenesulfonic acid monohydrate, including UN 3261 classification.
How can I request a sample or quote for 4-Bromobenzenesulfonic acid monohydrate?
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To request a sample or a quotation, please contact our sales department through the website or by phone. Our team will be pleased to assist you with your specific requirements.
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