Registration Dossier
Registration Dossier
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EC number: 931-288-4 | CAS number: -
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
HDI Uretdion hydrolyses rapidly at environmental relevant pHs and temperatures: After 1.5 hours at 50 °C no test item could be detected in a screening test. At all pH-values the half-time (t1/2) is below one day at ambient conditions (25°C) (Bayer Industry Services, 2006). Isocyanate groups disapperaed with a half life of 6.1h (Bayer AG 2000)
Main hydrolysis products are, beside traces of the corresponding diamine, insoluble monomeric and polymeric ureas.
Based on the determination of the Isocyanate function, the half-time of HDI Uretdion in the acetonitrile/water solution is approx. 6.1 hour at room temperature (23 °C) (Bayer AG, 1999).
Key value for chemical safety assessment
- Half-life for hydrolysis:
- 6.1 h
- at the temperature of:
- 23 °C
Additional information
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