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Diss Factsheets

Environmental fate & pathways

Biodegradation in water: screening tests

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Administrative data

Endpoint:
biodegradation in water: screening tests
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Scientifically acceptable.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1984
Report date:
1984

Materials and methods

Principles of method if other than guideline:
According to German standard test guideline, DIN 38 409 Part 43.
GLP compliance:
no

Test material

Constituent 1
Reference substance name:
methylacetoacetate
IUPAC Name:
methylacetoacetate
Details on test material:
- Name of test material (as cited in study report): Acetosaeuremethylester

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge (adaptation not specified)
Duration of test (contact time):
5 d
Initial test substance concentration
Initial conc.:
6.5 - 100 mg/L
Based on:
test mat.
Parameter followed for biodegradation estimation
Parameter followed for biodegradation estimation:
O2 consumption

Results and discussion

Details on results:
DOC = 466 mg/g COD = 1565 mg/g BOD5 = 667 mg/g

BOD5 / COD results

BOD5 / CODopen allclose all
Parameter:
BOD5
Parameter:
COD
Parameter:
BOD5*100/COD
Value:
43

Applicant's summary and conclusion