Registration Dossier
Registration Dossier
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EC number: 211-623-4 | CAS number: 675-62-7
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
Half-life time (upper limit) < 17 seconds at pH 4, at pH 7 and at pH 9 at 1.5°C. (OECD 111), RL1
Key value for chemical safety assessment
- Half-life for hydrolysis:
- 0.2 min
- at the temperature of:
- 1.5 °C
Additional information
The determination of the hydrolysis rate based on OECD 111. Dichloromethyl(3,3,3-trifluoropropyl)silane hydrolyses very rapidly. The half-life time of the substance at 1.5 °C was reported to be approximately 8 seconds at pH 4, 12 seconds at pH 7 and 9 seconds at pH 9 (DowCorning, 2001). Since the hydrolysis was so rapid relative to the timescale of the analytical measurement, there was insufficient data to determine concrete rate constants for the hydrolysis reactions by regression modelling. However, the data was adequate for estimating the upper limit of DT50. Half-life estimates were < 17 seconds for pH 4, 7, and 9 at 1.5°C.
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