Registration Dossier
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EC number: 248-595-8 | CAS number: 27668-52-6
Water solubility
Administrative data
Link to relevant study record(s)
Description of key information
The study need not be conducted since the test chemical is hydrolytically unstable in water at pH 4,7, 9 (half live less than 12 hours)
In the preliminary water solubility study, 0.1 g of Dimethyloctadecyl [3-(trimethoxysilyl) propyl] ammonium chloride is soluble in 2 ml of water. Hence, Dimethyloctadecyl [3-(trimethoxysilyl) propyl] ammonium chloride is predicted to be highly soluble. But in case of confirmatory study, precipitate formation was observed for 48 and even in 72 hrs. The spectra recorded for 48th hour stirring shows that the lambda max shifts from 204 nm (absorbance maxima for stock solution) to 194 nm. Hence, according to spectrometric study, it can be proved that the CAS no. 27668-52-6 is highly soluble but unstable in water.
Hence this endpoint was considered for waiver.
Key value for chemical safety assessment
- Water solubility:
- 0.084 mg/L
Additional information
The study need not be conducted since the test chemical is hydrolytically unstable in water at pH 4,7, 9 (half live less than 12 hours)
In the preliminary water solubility study, 0.1 g of Dimethyloctadecyl [3-(trimethoxysilyl) propyl] ammonium chloride is soluble in 2 ml of water. Hence, Dimethyloctadecyl [3-(trimethoxysilyl) propyl] ammonium chloride is predicted to be highly soluble. But in case of confirmatory study, precipitate formation was observed for 48 and even in 72 hrs. The spectra recorded for 48th hour stirring shows that the lambda max shifts from 204 nm (absorbance maxima for stock solution) to 194 nm. Hence, according to spectrometric study, it can be proved that the CAS no. 27668-52-6 is highly soluble but unstable in water.
Hence this endpoint was considered for waiver.
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