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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Methyl-N- [3-(trimethoxysilyl)propyl]carbamate (CAS 23432-62-4) exhibits a low vapour pressure and low volatility, indicating that the substance does not tend to evaporate from the water surface. Therefore, photodegradation in air is not a main degradation pathway. Nevertheless, if emitted into the air, methyl-N- [3-(trimethoxysilyl)propyl]carbamate (CAS 23432-62-4) will be rapidly photodegraded (estimated half-life of 0.94 days for indirect photodegradation, OH-radicals). Once released into the water phase, hydrolysis contributes significantly to the degradation of this substance. The substance has a two-step hydrolysis. The rate of formation of the first hydrolysis product, methyl-N-[3 (trihydroxysilyl)propyl]carbamate is relatively fast (half-life 3 h at room temperature and pH 7). However, the rate of formation of the ultimate hydrolysis products, (3 aminopropyl)silanetriol plus methanol and CO2, is extremely slow. Hydrolysis rates (half-life, 25° C, pH7) of carbamates is reported to vary from a few seconds to 105 years; for a primary carbamate with two alkyl substituents (as is the case for this substance), the rate is likely to be towards the upper end of this range.