Registration Dossier
Registration Dossier
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EC number: 208-052-8 | CAS number: 506-77-4
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
Cyanogen chloride is extremely volatile from water surfaces and hydrolyzes rapidly. Under alkaline conditions, the substance reacts to CNO(-) and forms hydrochloric acid and cyanic acid (1/3). Cyanogen chloride is unstable in raw surface waters; half-lives ranging from 1 minute 45 seconds to 10 hours at 5 deg C in ambient waters (2) and 5.25 hrs at pH 8 at 20 deg C(3) have been reported. Hydrolysis Rate constant at pH 7 is about 4 X 10-3 mols-1sec-1.
Key value for chemical safety assessment
Additional information
Reference:
Munro NB et al; Environ Health Perspect 107: 933-74 (1999)
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