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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Biodegradation in water: screening tests

Administrative data

biodegradation in water: screening tests
Type of information:
experimental study
Adequacy of study:
supporting study
other: Not applicable since exclusively summarizing data coming from an existing risk assessment (BUA Report) are presented as executive summary.

Data source

Referenceopen allclose all

Reference Type:
No information
Reference Type:
other: Risk assessment
Phenylenediamines, BUA Report 97
GDCh-Advisory Committee on Existing Chemicals of Environmental Relevance (BUA)
Bibliographic source:
edited by the GDCh-Advisory Committee on Existing Chemicals of Environmental Relevance, S. Hirzel, Wissenschaftliche Verlagsgesellschaft, Birkenwaldstraße 44, 70191 Stuttgart, 1995

Materials and methods

Results and discussion

Applicant's summary and conclusion

Executive summary:

It is difficult to define clearly the ways in which phenylenediamines are eliminated from the hydrosphere. Elimination processes such as oxidation reactions, adsorption, and stripping effects can only be conjectured. It is impossible to say with any degree of certainty for any of the three isomers what proportion of their elimination is accounted for by biodegradation.

The following elimination rates have been found: between 0 and 100 % for p-phenylenediamine. It is assumed that any phenylenediamines released into the atmosphere are destroyed by photodegradation.