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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Link to relevant study record(s)

Description of key information

Negligible

Key value for chemical safety assessment

Additional information

Hydrolysis is a common degradation route in the environment, namely the reaction of a substance with water with a net exchange of the X group with an OH at the reaction centre such that RX + H2O → ROH + HX. Hydrolysis is often dependent upon pH as the reaction is commonly driven by hydrogen or hydroxide ions. Hydrolysis kinetics are usually determined experimentally and should be used to consider the test type and whether parent or degradation product should be tested.

In the case of Direct Blue 267, hydrolysis can be considered as a negligible degradation pathway due to the chemical structure and the type of functional groups.

Hydrolysable organic groups are in fact those groups that can react with water like esters, anhydrides, amides, carbammates, nitriles, cyanates, epoxides, halomethanes, alkylhalides, urea and none of these groups are present within the substance formula.