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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Hydrolysis

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Administrative data

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Description of key information

A base-catalysed second-order hydrolysis rate constant (Kb) of 0.0541L/(mol-sec) at 25 degC was estimated using a structure estimation method.
This corresponds to half-lives of 4.06 years at pH 7 and 148.3 days at pH 8.

Key value for chemical safety assessment

Half-life for hydrolysis:
148.3 d
at the temperature of:
25 °C

Additional information

Stability of the substance against hydrolysis has been calculated using the following software tools:

SPARC v4.5

A base-catalysed second-order hydrolysis rate constant (Kb) of 0.0541L/(mol-sec) at 25 degC was estimated using a structure estimation method.

This corresponds to half-lives of 4.06 years at pH 7 and 148.3 days at pH 8.

HYDROWIN v2.00

A base-catalysed second-order hydrolysis rate constant of 0.01248 L/(mol-sec) at 25 degC was estimated using a structure estimation method.

This corresponds to half-lives of 17.6 years at pH 7 and 1.76 years at pH 8.

SPARC data was selected because not all structure fragments on DIBE are available from the fragment library included in HYDROWIN.