Description

3,4-Dichlorobenzenesulfonyl Chloride (CAS No. 98-31-7) is a highly reactive organosulfur compound with the molecular formula C₆H₃Cl₃O₂S. This crystalline solid is widely utilized as a key intermediate in organic synthesis, particularly in the preparation of sulfonamides, sulfonate esters, and other functionalized aromatic compounds. Its dichlorinated benzene ring and sulfonyl chloride moiety make it an essential building block for pharmaceuticals, agrochemicals, and specialty chemicals. The compound exhibits excellent purity (>98%) and stability under recommended storage conditions (2-8°C in a dry environment). Suitable for research and industrial applications, it is packaged in amber glass bottles to ensure prolonged shelf life and protection from moisture.

Properties

• CAS Number: 98-31-7
• Complexity: 246
• IUPAC Name: 3,4-dichlorobenzenesulfonyl chloride
• InChI: InChI=1S/C6H3Cl3O2S/c7-5-2-1-4(3-6(5)8)12(9,10)11/h1-3H
• InChI Key: NYIBPWGZGSXURD-UHFFFAOYSA-N
• Exact Mass: 243.891934
• Molecular Formula: C6H3Cl3O2S
• Molecular Weight: 245.5
• SMILES: C1=CC(=C(C=C1S(=O)(=O)Cl)Cl)Cl
• Topological: 42.5
• Monoisotopic Mass: 243.891934
• Synonyms: 3,4-DICHLOROBENZENESULFONYL CHLORIDE, 98-31-7, Benzenesulfonyl chloride, 3,4-dichloro-, AI3-19279, NSC 2651, EINECS 202-656-5, 3,4-dichlorobenzene-sulfonyl chloride, DTXSID5059165, DTXCID8049048, nyibpwgzgsxurd-uhfffaoysa-n, 3,4-Dichlorobenzene-1-Sulfonyl Chloride, 3,4-Dichlorobenzenesulphonyl chloride, 3,4-Dichlorophenylsulfonyl chloride, 3,4-dichlorobenzenesulfonylchloride, 3,4-dichloro-benzenesulfonyl chloride, MFCD00041255, NSC-2651, (3,4-dichlorophenyl)chlorosulfone, 3,4-dichloro benzene sulfonyl chloride, AX3AD43WDD, SCHEMBL18316, NSC2651, 3,4dichlorobenzenesulfonyl chloride, 3,4 dichlorophenyl sulfonylchloride, 3,4-dichlorobenzenesulphonylchloride, ALBB-001007, 3,4-dichlorophenylsulphonyl chloride, Benzenesulfonyl chloride,4-dichloro-, BBL037536, SBB046744, STK502400, 3,4-dichlorobenzene sulfonyl chloride, 3.4-dichloro-benzenesulfonyl chloride, AKOS000264827, CS-W012711, BP-10474, PS-10908, 3,4-dichlorobenzene sulfonic acid chloride, 3,4-Dichlorobenzenesulfonyl chloride, 95%, DB-021856, D2990, NS00040530, ST50945604, EN300-17164, Z56896790

Application

3,4-Dichlorobenzenesulfonyl chloride is primarily used as a versatile sulfonating agent in organic synthesis. It serves as a precursor for the development of sulfonamide-based pharmaceuticals and antimicrobial agents. The compound is also employed in the synthesis of herbicides and pesticides due to its reactive sulfonyl chloride group. Researchers utilize it to create specialized polymers and dyes with enhanced chemical resistance.

Safety and Hazards

GHS Hazard Statements

• H226 (83.7%): Flammable liquid and vapor [Warning Flammable liquids]
• H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]

Precautionary Statements

• P210, P233, P240, P241, P242, P243, P260, P264, P280, P301+P330+P331, P302+P361+P354, P303+P361+P353, P304+P340, P305+P354+P338, P316, P321, P363, P370+P378, P403+P235, P405, and P501

Hazard Classes and Categories

• Flam. Liq. 3 (83.7%)
• Skin Corr. 1B (100%)

If you are interested or have any questions, please contact us at support@atomfair.com

Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.