1,3-Benzenedisulfonyl chloride is used as a pharmaceutical intermediates. The compound is used to produce1,3-benzenedisulfonohydrazide.
Manufactured from m-benzenedisulfonic acid and phosphorus pentachloride or from benzenesulfochloride andchlorosulfuric acid.
Benzene-1,3-disulfonyl chloride (BDD) or 1,3-benzenedisulfonyl chloride is dichloride of 1,3-benzenedisulfonic acid. It is a colorless (white) crystalline solid with a melting point of 59-62 °C. It is soluble in common organic solvents. Compounds are sensitive to moisture and react in water; therefore, they should be stored in dry conditions. It has corrosive properties and can cause severe skin burns and eye damage.
Crystallise it from CHCl3 (EtOH free, by passing through an alumina column) or *C6H6/pet ether and dry it at 20mm pressure. [Beilstein 11 IV 553.]
