Registration Dossier
Registration Dossier
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EC number: 617-779-3 | CAS number: 85940-94-9
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
The registered substance exhibits an estimated half-life of 139 d for pH 7 at 25°C (calculated from experimental data at 50, 65 and 80°C) and has to be considered as stable to hydrolysis
Key value for chemical safety assessment
- Half-life for hydrolysis:
- 139 d
- at the temperature of:
- 25 °C
Additional information
The test material was insoluble in water (far from 100 mg/L). Thus, test material meets the definition of poorly water soluble substances and has to be considered as a "difficult substance to test" according to OECD Guidance No 23 (2000) on aquatic toxicity testing of difficult substances and mixtures. A hydrolysis study has been performed according to OECD TG 111. The results of Tier 1 (50°C) indicated that HDI Trimer MEKO-blocked was unstable to hydrolysis. Tier 2 testing was performed at three pH and three temperatures (higher ones for pH 7 and 9). HDI Trimer MEKO-blocked exhibits an estimated half-life of 139 d for pH 7 at 25 °C (calculated from experimental data at 50, 65 and 80 °C).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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