Halazone Chemical formula
Synonyms: Halazona; Halazonum; Pantocide. 4-(Dichlorosulphamoyl)benzoic acid.
Cyrillic synonym: Галазон.

💊 Chemical information

Chemical formula: C7H5Cl2NO4S = 270.1.
CAS — 80-13-7.


In US.

USP 31

(Halazone). A white crystalline powder with a characteristic odour of chlorine. Soluble 1 in more than 1000 of water and of chloroform, 1 in 140 of alcohol, and 1 in more than 2000 of ether; soluble in glacial acetic acid. It dissolves in solutions of alkali hydroxides and carbonates with the formation of a salt. Store in airtight containers. Protect from light.

💊 Profile

Halazone is a disinfectant with the general properties of chlorine in aqueous solution and is used for the disinfection of drinking water. It contains about 52% of ‘available chlorine’. One tablet containing 4 mg of halazone, stabilised with sodium carbonate and sodium chloride, may be sufficient to treat about 1 litre of water in about 30 minutes to 1 hour. The taste of residual chlorine may be removed by adding sodium thiosulfate.

💊 Preparations

USP 31: Halazone Tablets for Solution.

Proprietary Preparations

Ital.: Steridrolo a rapida idrolisi†; Port.: Speton†.
Published January 05, 2019.