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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Administrative data

Endpoint:
biodegradation in water: inherent biodegradability
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Study meets generally accepted scientific principles. Deficiency: Read Across from structural analogue.

Data source

Reference
Reference Type:
publication
Title:
Unnamed
Year:
1976

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 302 B (Inherent biodegradability: Zahn-Wellens/EMPA Test)
GLP compliance:
no

Test material

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, adapted
Duration of test (contact time):
5 d
Initial test substance concentration
Initial conc.:
200 mg/L
Based on:
COD

Results and discussion

% Degradation
Parameter:
other: COD
Value:
94.6
Sampling time:
5 d

Applicant's summary and conclusion

Interpretation of results:
inherently biodegradable
Executive summary:

A test on inherent biodegradation comparable to OECD TG 302 B was performed with a duration of 5 days. 94.6 % of the test substance was degraded during the test period. Therefore, it is considered being inherently biodegradable.