Halazone

Halazone
Names
Preferred IUPAC name
4-(Dichlorosulfamoyl)benzoic acid
Other names
  • Pantocide
  • p-Sulfondichloramidobenzoic acid
Identifiers
3D model (JSmol)
ChEMBL
ChemSpider
ECHA InfoCard 100.001.140 Edit this at Wikidata
EC Number
  • 201-253-1
UNII
UN number 1479
  • InChI=1S/C7H5Cl2NO4S/c8-10(9)15(13,14)6-3-1-5(2-4-6)7(11)12/h1-4H,(H,11,12)[1]
    Key: XPDVQPODLRGWPL-UHFFFAOYSA-N[1]
  • C1=CC(=CC=C1C(=O)O)S(=O)(=O)N(Cl)Cl
Properties
C7H5Cl2NO4S
Molar mass 270.08 g·mol−1
Appearance Fine white powder with an odor of chlorine[2]
Melting point 213 °C (415 °F; 486 K);[3] 196 °C with decomposition.[4]
Less than 1 g/L at 70 °F [2]
Hazards
GHS labelling:
GHS07: Exclamation mark
Warning
H315, H319
P264, P280, P302+P352, P305+P351+P338, P321, P332+P313, P337+P313, P362
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Halazone (4-(dichlorosulfamoyl)benzoic acid) is a chemical compound whose formula can be written as either C
7H
5Cl
2NO
4S or (HOOC)(C
6H
4)(SO
2)(NCl
2). It has been widely used to disinfect drinking water.

Other names for this compound include p-sulfondichloramidobenzoic acid, 4-[(dichloroamino)sulfonyl]benzoic acid, and Pantocide.

  1. ^ a b PubChem: "Halazone". Accessed on 2018-06-18.
  2. ^ a b NTP (1992), cited by PubChem
  3. ^ Jean-Claude Bradley: Open Melting Point Dataset. Quoted by Chemspider.
  4. ^ Cite error: The named reference salj was invoked but never defined (see the help page).