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Benzene-1,3-disulfonyl chloride

CAS#[585-47-7]
G-codeGEO-03722
EC number209-556-0
Molecular formulaC6H4Cl2O4S2
Molecular weight275.12
Synonyms 1,3-Benzenedisulfonyl dichloride ; 3-Chlorosulfonylbenzenesulfonyl chloride ; m-Benzenedisulfonyl chloride ; m-Benzenedisulfonyl dichloride ; m-Phenylenedisulfonyl chloride ; 1,3-Benzenedisulfonyl chloride
Structure of Benzene-1,3-disulfonyl chloride
General description

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Specification

Appearanceoff-white to cream powder
Purity97,1% (HPLC)
Identification1H NMR conforms to structure

Structural identification

CAS#[585-47-7]
G-codeGEO-03722
EC number209-556-0
SMILESO=S(C1=CC=CC(S(=O)(Cl)=O)=C1)(Cl)=O
InChIInChI=1S/C6H4Cl2O4S2/c7-13(9,10)5-2-1-3-6(4-5)14(8,11)12/h1-4H
InChI KeyInChIKey=ALIQZUMMPOYCIS-UHFFFAOYSA-N
Download structure as .mol

Regulatory Information

Transport InformationCORROSIVE SOLID, ACIDIC, ORGANIC, N.O.S. UN3261 8/ PG II
GHS pictogram
GHS05_corrosiveGHS08_health_hazard
Signal WordDanger
Hazard Statements
H314 - H317 - H334

H314 – Causes severe skin burns and eye damage

H317 – May cause an allergic skin reaction

H334 – May cause allergy or asthma symptoms or breathing difficulties if inhaled

Precautionary Statements
P261 - P280 - P305+351+338 - P310

P261 – Avoid breathing dust/fume/gas/mist/vapours/spray:

P280 – Wear protective gloves/protective clothing/eye protection/face protection:

P305+351+338 – IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do – continue rinsing

P310 – Immediately call a POISON CENTER or doctor/physician:

Documents
Safety Data Sheet

Product categorization

Description

Benzene-1,3-disulfonyl chloride, also known as 1,3-benzenedisulfonyl chloride, is an aromatic sulfonyl chloride widely used as a versatile intermediate in organic synthesis. It is a white crystalline solid with good solubility in common organic solvents and contains two highly reactive sulfonyl chloride groups that enable efficient derivatization reactions.

The compound is particularly valuable for the preparation of pharmaceutical intermediates, biologically active sulfonamides, and specialty polymeric materials. It has also been employed as a reagent for the synthesis of isonitriles from formamides and for the production of polysulfonamide-based membranes. Due to its sensitivity toward moisture, it should be handled and stored under dry conditions.

From an organic chemistry perspective, Benzene-1,3-disulfonyl chloride is an important bifunctional building block that enables the construction of complex sulfur-containing molecules for medicinal chemistry, materials science, and advanced synthetic applications.

Original article: Benzene-1,3-disulfonyl chloride – general description and application

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