Benzenesulfonyl Chloride
Benzenesulfonyl Chloride (CAS 98-09-9), min. 99.0% GC, supplied wholesale by Zyntex. Aromatic sulfonyl chloride for sulfonamide intermediates, N-butylbenzenesulfonamide plasticizer, dyes and the Hinsberg test. CoA and SDS.
Description
Benzenesulfonyl Chloride Product Overview
Benzenesulfonyl chloride (C6H5SO2Cl) is a clear, colorless to light yellow oily liquid that solidifies at about 14.5°C. It reacts slowly with water and readily with amines and alcohols.
Its reaction with amines gives benzenesulfonamides, a structure found in pharmaceuticals, dyes and agrochemicals. The same reaction is the basis of the classic Hinsberg test, which distinguishes primary, secondary and tertiary amines. Polymer additive producers react it with butylamine to make N-butylbenzenesulfonamide, a common plasticizer for polyamides.
It also serves as a starting material for sulfonate esters and other benzenesulfonyl derivatives. For the aliphatic analogue, see Methanesulfonyl Chloride; for the parent aromatic, Benzene; and for a classic sulfonamide, Sulfanilamide.
Key Applications of Benzenesulfonyl Chloride
Main application areas:
💊 Pharmaceutical Intermediates
Building block for benzenesulfonamides.
🏭 Plasticizers
Raw material for N-butylbenzenesulfonamide.
🎨 Dyes
Intermediate for sulfonamide dyes.
🔬 Analytical Chemistry
Reagent for the Hinsberg amine test.
Benzenesulfonyl Chloride Technical Specifications
| Parameter | Standard Value |
|---|---|
| Product Name | Benzenesulfonyl Chloride |
| CAS Number | 98-09-9 |
| EC Number | 202-636-6 |
| Molecular Formula / Weight | C6H5SO2Cl / 176.62 g/mol |
| Assay / Purity (GC) | Min 99.0% |
| Appearance | Clear, colorless to light yellow oily liquid |
| Melting / Freezing Point | Approx. 14.5 °C |
| Density (at 20 °C) | Approx. 1.38 g/cm3 |
| Documents | CoA and SDS with every lot |
⚠️ Safety & Handling: Harmful if swallowed and causes severe skin burns and eye damage; reacts with water to release corrosive acids. Handle in well-ventilated areas or fume hoods with chemical-resistant gloves, goggles and protective clothing. Store in tightly closed containers in a dry place, away from water, bases and amines. Always consult the Safety Data Sheet (SDS) for full classification and handling instructions.
Frequently Asked Questions
Why does benzenesulfonyl chloride sometimes solidify?
It freezes at about 14.5°C, so it may be solid in cool storage. Gentle warming makes it liquid again.
What is the Hinsberg test?
A classic test where amines react with it; the solubility of the products in alkali distinguishes primary, secondary and tertiary amines.
How can I get a price and documents?
Prices depend on quantity, packaging and destination. Contact us with your required volume to receive a quotation together with the CoA and SDS.
