Benzenesulfonyl Chloride

Product Overview

Benzenesulfonyl Chloride (C₆H₅SO₂Cl) is a colorless to pale yellow liquid or crystalline solid organic compound widely used as a key intermediate in organic synthesis, pharmaceutical production, and dye manufacturing. Known for its reactive sulfonyl chloride group, it enables efficient sulfonylation reactions and is essential in the synthesis of sulfonamides, agrochemicals, dyes, and specialty chemicals.

Benzenesulfonyl Chloride is valued for its high purity, stability under controlled conditions, and versatility in chemical transformations, making it a core reagent in industrial and laboratory chemical applications.

Key Product Identification

• Product Name: Benzenesulfonyl Chloride

• Synonyms: Phenylsulfonyl Chloride, C₆H₅SO₂Cl

• Chemical Formula: C₆H₅SO₂Cl

• CAS Number: 98-09-9

• Molecular Weight: 157.56 g/mol

• HS Code: 29211990

• Appearance: Colorless to pale yellow liquid or solid

• Odor: Pungent, characteristic sulfonyl chloride odor

• Solubility: Soluble in organic solvents such as chloroform, dichloromethane, and benzene; reacts with water

Chemical & Physical Properties

Manufacturing & Quality Control

Benzenesulfonyl Chloride is typically synthesized via chlorosulfonation of benzene under controlled industrial conditions. Quality control ensures:

• High chemical purity with minimal residual acids or chlorides

• Consistent reactivity for sulfonylation reactions

• Compliance with laboratory and industrial chemical standards

Each batch undergoes GC/HPLC assay, moisture content analysis, and visual inspection.

Applications of Benzenesulfonyl Chloride

Pharmaceutical & Fine Chemicals

• Intermediate for sulfonamide drugs, APIs, and specialty pharmaceuticals

• Enables sulfonylation of amines and alcohols in drug synthesis

Dye & Pigment Industry

• Key reagent in azo dye and pigment synthesis

• Provides color stability and chemical reactivity in final products

Organic Synthesis & Research

• Used in laboratory and industrial organic synthesis

• Applied for functional group transformations and sulfonylation reactions

Agrochemical Industry

• Used in the production of herbicides, pesticides, and fungicides as a reactive intermediate

Packaging & Logistics

• Standard Packaging:

• 25 kg / 50 kg kraft paper bag with polyethylene liner

• 200 – 500 kg drum or IBC for bulk supply

• Storage Conditions:

• Store in cool, dry, well-ventilated conditions

• Protect from moisture, water, and heat

• Keep containers tightly sealed

Safety & Handling

• Moisture-sensitive and reactive with water and nucleophiles

• Avoid skin, eye, and inhalation exposure; use standard laboratory PPE

• Handle under fume hood in well-ventilated areas

• Consult the Safety Data Sheet (SDS/MSDS) for detailed handling and emergency instructions

Regulatory & Documentation

Available upon request:

• COA (Certificate of Analysis)

• SDS / MSDS

• TDS (Technical Data Sheet)

• Compliance with industrial and laboratory chemical standards

Why Choose Our Benzenesulfonyl Chloride?

• ✔ High purity and reliable batch-to-batch consistency

• ✔ Ideal for sulfonylation reactions, pharmaceutical intermediates, and dye synthesis

• ✔ Flexible packaging and bulk supply options

• ✔ Export-ready documentation and regulatory support

• ✔ Technical guidance for chemical synthesis and industrial applications

Frequently Asked Questions (FAQ)

Q1: What is Benzenesulfonyl Chloride used for?

It is used as a key intermediate in pharmaceuticals, dyes, agrochemicals, and specialty chemicals.

Q2: Is it soluble in water?

No, it reacts violently with water; it is soluble in organic solvents like chloroform, dichloromethane, and benzene.

Q3: Can you provide analytical and regulatory documents?

Yes, COA, SDS, TDS, and compliance certificates are available.

Q4: What is the typical minimum order quantity (MOQ)?

MOQ depends on packaging type and destination; please contact us for details.