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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint:
biodegradation in water: ready biodegradability
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1992
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: These reliable data and information are published by Japan Chemical Industry Ecology-Toxicology & Information Center.
Cross-reference
Reason / purpose for cross-reference:
reference to same study

Data source

Reference
Reference Type:
publication
Title:
Unnamed
Year:
1992

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 301 C (Ready Biodegradability: Modified MITI Test (I))
Deviations:
not specified
Principles of method if other than guideline:
Not applicable.
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
Acetaldehyde
EC Number:
200-836-8
EC Name:
Acetaldehyde
Cas Number:
75-07-0
Molecular formula:
C2H4O
IUPAC Name:
acetaldehyde
Details on test material:
No details available.

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, non-adapted
Duration of test (contact time):
14 d
Initial test substance concentration
Initial conc.:
100 mg/L
Based on:
test mat.

Results and discussion

% Degradation
Parameter:
other: BOD
Value:
80
Sampling time:
14 d

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Interpretation of results:
readily biodegradable
Conclusions:
The test item is readily biodegradable using the biodegrdability MITI test according to test guideline OECD 301C. Degradation after 14 days was determined to be 80%.
Executive summary:

The test item is readily biodegradable using the biodegrdability MITI test according to test guideline OECD 301C. Degradation after 14 days was determined to be 80%. These reliable data and information are published by Japan Chemical Industry Ecology-Toxicology & Information Center.