Nomenclature
CAS number: 7758-19-2
ClNaO
2; mol wt 90.44.
Cl 39.20%, Na 25.42%, O 35.38%.
NaClO
2.
Description and references
Prepd on a commercial scale by passing chlorine
dioxide into a soln of sodium hydroxide contg carbonaceous matter
and lime: Vincent, US 2092944; US 2092945 (both 1937 to Mathieson). Review of manuf and properties:
Kesting, Pulp Paper Mag. Can. 53, no. 8, 99-104 (1952); of toxicology and human exposure:
Toxicological Profile for Chlorine Dioxide
and Chlorite (PB2003-101465, 2002) 182 pp.
Properties
Slightly hygroscopic crystals or flakes, does
not cake. Dec 180-200°. Powerful oxidizer, but will not explode
on percussion unless in contact with oxidizable material. Soly in
water (g/100 g soln): at 5°: 34; at 17°: 39; at 30°: 46; at 45°:
53; at 60°: 55.Derivative
Trihydrate.
Properties
Triclinic leaflets, becomes anhydr at 38° or in
desiccator over KOH at room temp.Use
In the preparation of chlorine dioxide for immediate
use; in water purification; as bleaching agent for textiles, paper
pulp; disinfectant.