Title: Chloric Acid
CAS Registry Number: 7790-93-4
Molecular Formula: ClHO3
Molecular Weight: 84.46
Percent Composition: Cl 41.98%, H 1.19%, O 56.83%
Line Formula: HClO3
Literature References: Prepd from barium chlorate and sulfuric acid: Lamb et al., J. Am. Chem. Soc. 42, 1643 (1920); from sodium chlorate using ion-exchange resins: Klement, Z. Anorg. Allg. Chem. 260, 271 (1949).
Properties: Known in aq soln only. Aq solns are stable if pure and protected from light. 1% aq soln d418 1.0044; 6% soln d418 1.0344; 10% soln d418 1.0594; 16% soln d418 1.0991; 20% soln d418 1.1273; 24% soln d418 1.1568. A 40% soln corresponds to HClO3.7H2O, d420 1.282. If higher concns are attempted by evaporation the soln begins to dec with evolution of chlorine and oxygen and formation of perchloric acid.
Density: 1% aq soln d418 1.0044; 6% soln d418 1.0344; 10% soln d418 1.0594; 16% soln d418 1.0991; 20% soln d418 1.1273; 24% soln d418 1.1568; A 40% soln corresponds to HClO3.7H2O, d420 1.282
CAUTION: Strongly irritating to skin, mucous membranes.
Use: Oxidizing agent; with H2SO3 as catalyst in acrylonitrile polymerization. |