3-(Chlorosulfonyl)benzoic acid

CAS 4025-64-3ClSO2C6H4CO2HChemical Synthesis

3-(Chlorosulfonyl)benzoic acid (CAS 4025-64-3) is a key organic building block and a reactive sulfonyl halide derivative with the linear formula ClSO2C6H4CO2H and a molecular weight of 220.63 g/mol. It serves as a versatile intermediate in chemical synthesis, particularly for introducing the 3-carboxybenzenesulfonyl group into various molecular structures. This compound is essential for creating complex organic molecules and is supplied by TSS for research and development purposes.

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3-(Chlorosulfonyl)benzoic acid (ClSO2C6H4CO2H) — chemical structure, CAS 4025-64-3; Chemistry, fine chemical supplied by Tech Serve Solutions

Building BlocksChemical SynthesisOrganic Building BlocksSulfonyl HalidesSulfur Compounds

01 /Applications

Synthesis of Organic Intermediates

This compound is utilised as a building block in organic synthesis to prepare more complex molecules. Its reactive chlorosulfonyl group readily participates in reactions, enabling the introduction of specific functional moieties.

Preparation of Sulfonamides and Sulfonate Esters

3-(Chlorosulfonyl)benzoic acid can react with amines to form sulfonamides or with alcohols to form sulfonate esters. These derivatives find applications in pharmaceuticals, agrochemicals, and materials science.

Research and Development

As a functionalised aromatic compound, it is employed in academic and industrial research laboratories for exploring novel chemical transformations and developing new chemical entities.

02 /Properties

Molecular weight	220.63
Linear formula	ClSO2C6H4CO2H
Assay	95%
Melting point	128-130 °C(lit.)

03 /Safety & handling

GHS hazard pictogram: Corrosive (GHS05) — Corrosive

Danger

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)	26-27-36/37/39-45

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

4025-64-3

MDL number

MFCD00024877

05 /Quality & supply

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.

06 /Frequently asked questions

What is 3-(Chlorosulfonyl)benzoic acid used for?

3-(Chlorosulfonyl)benzoic acid is primarily used as a building block in organic synthesis for creating complex molecules, including the preparation of sulfonamides and sulfonate esters, and for research and development purposes.

What is the CAS number and formula for 3-(Chlorosulfonyl)benzoic acid?

The CAS number is 4025-64-3 and the linear formula is ClSO2C6H4CO2H.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies 3-(Chlorosulfonyl)benzoic acid with an assay of 95%. This product is intended for chemical synthesis and research applications and is not represented as USP, BP, or EP grade.

What are the safety considerations for handling 3-(Chlorosulfonyl)benzoic acid?

3-(Chlorosulfonyl)benzoic acid is classified as Danger, causing severe skin burns and eye damage (H314). Appropriate personal protective equipment including eyeshields, face shields, chemical-resistant gloves, and respiratory protection must be used. Handle in a well-ventilated area or fume hood.

How is 3-(Chlorosulfonyl)benzoic acid packed and shipped?

3-(Chlorosulfonyl)benzoic acid is shipped as UN 3261, Class 8, Packing Group II. TSS exports this chemical adhering to all relevant international shipping regulations.

How can I request a quote or sample?

To request a quote or sample of 3-(Chlorosulfonyl)benzoic acid, please contact the TSS sales department through the website or by phone, providing your contact details and desired quantity.