Registration Dossier

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
Reliability:
3 (not reliable)
Rationale for reliability incl. deficiencies:
other: Full study report is not available as the data is > 12 year old and summaries have been prepared using data provided by ECHA. Also, no guideline is mentioned.

Data source

Reference
Reference Type:
other: Information from migrated NONS file, as per inquiry number 06-0000021645-69-0000, permission to refer granted by ECHA
Title:
Unnamed
Year:
1993

Materials and methods

Test guideline
Guideline:
other: No data available
Principles of method if other than guideline:
No data available
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent
Type:
Constituent

Study design

Oxygen conditions:
not specified
Inoculum or test system:
not specified
Reference substance
Reference substance:
other: Sodium acetate

Results and discussion

% Degradation
Parameter:
not specified
Value:
< 10
Sampling time:
28 d
Details on results:
Points of degradation plot (test sUbstance):
1.9 % degradation after 2 d
4.8 % degradation after 5 d
5.4 % degradation after 9 d
5.4 % degradation after 12 d
5.4 % degradation after 21 d
5.6 % degradation after 28 d

BOD5 / COD results

Results with reference substance:
Points of degradation plot (reference substance):
0 % degradation after 2 d
10.4 % degradation after 5 d
30.6 % degradation after 9 d
35.8 % degradation after 12 d
46.2 % degradation after 21 d
76.5 % degradation after 28 d
82 % degradation after 28 d

Applicant's summary and conclusion

Interpretation of results:
other: not readily biodegradable