Registration Dossier
Registration Dossier
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EC number: 204-820-1 | CAS number: 127-06-0
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
- Half-life for hydrolysis:
- 18.5 d
- at the temperature of:
- 20 °C
Additional information
Reliable measured hydrolysis study for acetone oxime is available and included in the dossier.
JE Wynfield Rhodes (1934) provides a reliable study where the equilibria between acetone oxime, acetone and hydroxylamine in dilute aqueous solution (approx 1%) at pH between 2.4 and 6.8 and at a temperature of 49.7 degC was measured. It was concluded that the hydrolysis constant is approximately 16 x 10-6 in neutral conditions but increases somewhat (up to 4 times) when the solution becomes very acid. However, thehalf-life was not determined.
Environment Canada (2010) published data regarding the hydrolysis of the analogue substance, butanone oxime, in 2010. The information shows that butanone oxime is degraded by 14% over a 4 -day window at a pH of 7 and a temperature of 20oC due to hydrolysis. Therefore, the half-life is 18.5 days.
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