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:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Guideline study without detailed documentation. Study accepted by competent national authorities (ELINCS substance) from EU member states. Reference see section 13 Assessment Reports, ECHA derogation statement.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2009

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: Annex V, C6 (67/548/EWG)
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Oxygen conditions:
not specified
Inoculum or test system:
not specified
Duration of test (contact time):
28 d
Reference substance
Reference substance:
other: Sodium benzoate

Results and discussion

% Degradation
Parameter:
not specified
Value:
7
Sampling time:
28 d
Details on results:
Points of degradation plot (test substance)
7% degradation after 5d
4% degradation after 15d
2% degradation after 28d

BOD5 / COD results

Results with reference substance:
70% degradation after 5d
83% degradation after 15d
83% degradation after 28d

Applicant's summary and conclusion

Interpretation of results:
other: not readily biodegradable