Registration Dossier
Registration Dossier
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EC number: 203-328-4 | CAS number: 105-76-0
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
pH 1.2, 37°C, 144 hours: about 15% degradation
pH 4, 37°C: no significant degradation observed
pH 7, 20°C: DT50 = 96.3 hours
pH 7, 37°C: DT50 = 11.2 hours
pH 9, 25°C: DT50 = 50 hours
Key value for chemical safety assessment
- Half-life for hydrolysis:
- 96.3 h
- at the temperature of:
- 20 °C
Additional information
The results of the hydrolysis study on dibutyl maleinate indicate an increase of hydrolysis with increasing pH. Whereas under acidic conditions only a low degradation of dibutyl maleinate was observed, the degree of degradation increased with increasing pH value. Under the test conditions which approximately correspond to that of the environment, i.e. a pH value of 7 and a water temperature of 20°C, a DT50 of about 96.3 hours was observed.
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