Registration Dossier

Environmental fate & pathways

Biodegradation in water: screening tests

Administrative data

Endpoint:
biodegradation in water: ready biodegradability
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Study period:
1997
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Read Across justified because structure is nearly the same. Only the chain length differ (C6:2 origin, C8:2 analogue substance). Read across justification is supported by the comparable phys.chem. data.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1997
Report Date:
1997

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, domestic (adaptation not specified)

Results and discussion

% Degradation
Parameter:
% degradation (CO2 evolution)
Value:
6
Sampling time:
28 d

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Interpretation of results:
under test conditions no biodegradation observed
Executive summary:

Perfluorooctylethyliodide (8-2 FTI) CASNo. 2043-53-0

 

The ready biodegradability of Perfluorooctylethyliodide was investigated in an OECD 301B test (Sturm test). After 28 days less than 6 % CO2 was formed. Due to the test setting the volatile test substance may have disappeard from the test solution and may not be present over the whole test period (no substance specific analysis was applied) (Hoechst, 1997).