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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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


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Administrative data

Link to relevant study record(s)

Description of key information

This substance is easily hydrolyzed in alkaline water and transformed into N-phenylmaleamic acid (CAS No.555-59-9). The transformed substance is anticipated to be transformed into maleic acid (CAS No.108-31-6) and aniline (CAS No.62-53-3) which substances are known to be biodegradable. 

Key value for chemical safety assessment

Half-life for hydrolysis:
1.4 h
at the temperature of:
30 °C

Additional information

Measurement of Hydrolysis rate vs pH value

 pH  Temperature (ºC)  Half-life
 4  30  14.6 hour
 7  30  1.4 hour
 9  25  9.1 minute