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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Link to relevant study record(s)

Description of key information

The stability of DEAS against hydrolysis was calculated using SPARC online tool v4.6, module Hydrolysis. 
A base-catalysed second-order hydrolysis rate constant (Kb) equal to 0.0639 L/(mol-sec) at 25 deg C and pH > 8 was estimated using a structure estimation method. This corresponds to half-lives of 3.44 years at pH 7 and 125.5 days at pH 8.

Key value for chemical safety assessment

Half-life for hydrolysis:
3.44 yr
at the temperature of:
25 °C

Additional information

A base-catalysed second-order hydrolysis rate constant (Kb) equal to 0.0639 L/(mol-sec) at 25 deg C and pH > 8 was estimated using a structure estimation method. This corresponds to half-lives of 3.44 years at pH 7 and 125.5 days at pH 8.