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Environmental fate & pathways

Biodegradation in water: screening tests

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Administrative data

Endpoint:
biodegradation in water: ready biodegradability
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Study period:
1981-04-29 to 1981-05-21
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Basic data given. However, reported data are unsuitable in the context of the ICCA/HPV-program and regulatory issues.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1981
Report Date:
1981

Materials and methods

Principles of method if other than guideline:
Respirometric degradation and toxicity test following a BASF standard method. This BASF standard method has been described in: Pagga U (1980).
Vom Wasser 55, 313-325
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
- Name of test material (as cited in study report): 3,3-Dimethyl-4,4-diaminodiphenylmethan
- Purity: No data given

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, industrial (adaptation not specified)
Duration of test (contact time):
22 d
Parameter followed for biodegradation estimation
Parameter followed for biodegradation estimation:
O2 consumption
Reference substance
Reference substance:
not specified

Results and discussion

% Degradation
Parameter:
% degradation (O2 consumption)
Value:
< 10
Sampling time:
22 d

Applicant's summary and conclusion