Registration Dossier

Administrative data

Endpoint:
activated sludge respiration inhibition testing
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
supporting study
Study period:
1996
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:
1996

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 209 (Activated Sludge, Respiration Inhibition Test
Deviations:
yes
Remarks:
different referenzsubstance
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Reference substance name:
Perflourooctylethyliodide
IUPAC Name:
Perflourooctylethyliodide
Constituent 2
Chemical structure
Reference substance name:
1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluoro-10-iododecane
EC Number:
218-053-5
EC Name:
1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluoro-10-iododecane
Cas Number:
2043-53-0
Molecular formula:
C10H4F17I
IUPAC Name:
1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluoro-10-iododecane

Sampling and analysis

Analytical monitoring:
no

Test solutions

Vehicle:
no

Test organisms

Test organisms (species):
activated sludge

Study design

Test type:
static
Water media type:
freshwater
Limit test:
no
Total exposure duration:
3 h

Results and discussion

Applicant's summary and conclusion

Executive summary:

8 -2 FTI is a volatile substance and due to the strong aeration in the OECD 209 test it is very likely that a considerable amount of the test item will be stripped of the test system. As normally the test concentration is not monitored analytically the concentration of the test item of the test period is not known. It can be concluded from the test that no the sludge respiration rate was not inhibited at the nominal concentration of 10000 mg/L at the test start. It is important to know that in tests with aerobic and anaerobic sewage sludge as well as soil biodegradation no toxicity on microorganisms was observed at the test concentration.