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Environmental fate & pathways

Hydrolysis

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Description of key information

Study technically not feasible. The substance is highly insoluble in water.

Key value for chemical safety assessment

Additional information

In accordance with REACH Regulation 1907/2006, Annex VIII - Column 2, hydrolysis as a function of pH does not need to be determined as the substance can be regarded as biodegradable.

The stability of the substance against hydrolysis was calculated using the following software tools:

SPARC v4.6

A base-catalysed second-order hydrolysis rate constant (Kb) of 0.1024 L/(mol-sec) at 25 deg C was estimated using a structure estimation method.

This corresponds to half-lives of 2.15 years at pH 7 and 78.4 days at pH 8.

HYDROWIN v2.00

A base-catalysed second-order hydrolysis rate constant (Kb) of 0.781 L/mol-sec at 25 deg C was estimated using a structure estimation method.

This corresponds to half-lives of 102.7 days at pH 7 and 10.3 days at pH 8.

SPARC data was selected because not all structure fragments on DIPLAST TM 8 are available from the fragment library included in HYDROWIN.