Registration Dossier
Registration Dossier
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EC number: 223-242-0 | CAS number: 3779-63-3
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
In a screening test at 50 °C the HDI Trimer was found to hydrolyse by 84 – 89 % within less than 1 hour at pH values of 4, 7, and 9.
Approximate mean half lives of 3 hours were estimated at any pH and environmental relevant temperatures. A hydroysis product based on the hydrolysis of the 3 Isocyanate groups to the corresponding amine functions has been proposed.
Regarding disappearance of Isocyanate groups, the half-life (DT50) of HDI Trimer in an acetonitrile/water solution is approx. 7.7 hours at room temperature (23 °C).
Key value for chemical safety assessment
- Half-life for hydrolysis:
- 3 h
- at the temperature of:
- 20 °C
Additional information
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