Registration Dossier
Registration Dossier
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EC number: 611-631-1 | CAS number: 58190-57-1
Partition coefficient
Administrative data
Link to relevant study record(s)
Description of key information
The Log Kow of test item should be understood based on its degradation products since it undergoes rapid hydrolysis (half-life < 1h) in aqueous to acetone oxime (log Kow = 1.20, KOWWIN v1.68) and ethylsilanetriol (Log Kow = -1.87, KOWWIN v1.68).
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 1.2
Additional information
According to Column 2 of REACH Annex VII, the study cannot be conducted since the substance undergoes rapid hydrolysis (half-life < 1h) in aqueous to acetone oxime and ethylsilanetriol. Morevoer, the corresponding silanols undergo continuous condensation reactions to produce higher molecular weight siloxanes which are considered biologically unavailable.
The estimated log octanol-water partition coefficients (Log Kow) for the degradation products, acetone oxime and ethylsilanetriol were 1.20 and -1.87(EPI-Suite, KOWWIN v1.68). Moreover, according to Jaros et al (2007) the Log Kow of acetone oxime was reported to be 0.20.
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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