6657. Nitryl Chloride

Nomenclature

CAS number: 13444-90-1
Nitroxyl chloride.
ClNO2; mol wt 81.46.
Cl 43.52%, N 17.19%, O 39.28%.
NO2Cl.

Description and references

Conveniently prepd by the addn of chlorosulfonic acid to nitric acid: Dachlauer, DE 509405 (1929 to I. G. Farben); Kaplan, Schechter, Inorg. Synth. 4, 52 (1953); Collis et al., J. Chem. Soc. 1958, 438.

Properties

Corrosive, toxic, colorless gas. Chlorine-like odor. Vapor density (100°): 2.81 g/l. Dec >120°. bp -14.3°. mp -145°. d0liq 1.37; d16liq 1.33. Even the purest liquid may have a pale yellow color. Solns in polar solvents are always yellow. The gas or liquid may attack organic matter with explosive violence.

Caution

Strong irritant, corrosive.

Use

Nitrating and chlorinating agent in organic syntheses.