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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
biodegradation in water and sediment: simulation testing, other
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
3 (not reliable)
Rationale for reliability incl. deficiencies:
significant methodological deficiencies
Remarks:
Old literature. Experimental conditions were well documented, but test chemicals were not. Result analysis and evaluation were not in details. Test micro- organisms were not discussed.

Data source

Reference
Reference Type:
publication
Title:
Ability of activated sludge microorganisms to oxidize aromatic organic compounds
Author:
Marion CV, Malaney GW
Year:
1964
Bibliographic source:
IN: Proceedings of the Eighteenth Industrial Waste Conference, April 30, May 1 and 2, 1963, Purdue University; 1964:297-308.

Materials and methods

Principles of method if other than guideline:
Exposure of the activated sludge microflora to individual compounds using the conventional Warburg respirometer technique with oxygen uptake as the measure of oxidation of the compound.
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
o-phenylenediamine
EC Number:
202-430-6
EC Name:
o-phenylenediamine
Cas Number:
95-54-5
Molecular formula:
C6H8N2
IUPAC Name:
benzene-1,2-diamine

Results and discussion

Any other information on results incl. tables

o-phenylenediamine was toxic to all three sludges tested during first 24-hour period. It remained resistant to oxidation during the 168-hr aeration period.

Applicant's summary and conclusion