Registration Dossier
Registration Dossier
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EC number: 246-377-7 | CAS number: 24636-31-5
Water solubility
Administrative data
Link to relevant study record(s)
Description of key information
Water solubility [3-(chlorodimethylsilyl)propyl methacrylate]: not relevant
Water Solubility [3-[hydroxy(dimethyl)silyl]propyl methacrylate]: Above approximately 30 mg/L condensation reactions can occur over time, limiting the concentration dissolved in water. The calculated solubility is 330 mg/L at 20°C (QSAR)
Key value for chemical safety assessment
Additional information
The requirement to conduct a water solubility study for the substance is waived on the basis that it hydrolyses very rapidly to form 3-[hydroxy(dimethyl)silyl]propyl methacrylate and hydrochloric acid.
The silanol hydrolysis product, 3-[hydroxy(dimethyl)silyl]propyl methacrylate, may undergo condensation reactions in water, these become important above approximately 30 mg/L and can limit the concentration dissolved in water. For details, see the overall physicochemical properties discussion.
The water solubility of the silanol hydrolysis product 3-[hydroxy(dimethyl)silyl]propyl methacrylate has been calculated using a validated QSAR method to be 330 mg/L. However, the saturation concentration may in reality be limited by the formation of less soluble dimer rather than the solubility of the monomer itself.
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