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Environmental fate & pathways

Biodegradation in water: screening tests

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Administrative data

Endpoint:
biodegradation in water: ready biodegradability
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Not specified
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study conducted to GLP (taken from SNIF file). Registrant referring to studies >12 years old at the permission of ECHA.

Data source

Reference
Reference Type:
other: Body responsible for the test
Title:
Unnamed
Year:
1999
Report date:
1999

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method C.4-D (Determination of the "Ready" Biodegradability - Manometric Respirometry Test)
GLP compliance:
yes

Test material

Constituent 1
Reference substance name:
-
EC Number:
432-130-2
EC Name:
-
Cas Number:
119345-01-6
Molecular formula:
Not applicable ( a generic molecular formula cannot be provided for this UVCB substance)
IUPAC Name:
Reaction products of phosphorous trichloride, with 1,1′-biphenyl and 2,4-bis(1,1-dimethylethyl)phenol
Details on test material:
no data
Specific details on test material used for the study:
Details on properties of test surrogate or analogue material (migrated information):
no data

Study design

Oxygen conditions:
not specified
Inoculum or test system:
not specified
Details on inoculum:
no data
Details on study design:
no data
Reference substance
Reference substance:
benzoic acid, sodium salt

Results and discussion

% Degradation
Parameter:
not specified
Value:
0
Sampling time:
28 d
Remarks on result:
other: No further information is available from the SNIF file.
Details on results:
Points of degradation plot (test substance):

0 % degradation after 7 d
0% degradation after 14 d
0 % degradation after 21 d
0 % degradation after 27 d
0 % degradation after 28 d

BOD5 / COD results

Results with reference substance:
Points of degradation plot (reference substance):

81.5 % degradation after 7 d
87.5% degradation after 14 d
90 % degradation after 21 d
90 % degradation after 27 d
90 % degradation after 28 d

Any other information on results incl. tables

The toxicity control at a concentration of the substance at 100 mg/l (nominal concentration) had no inhibitory effects on the inoculum.

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Interpretation of results:
under test conditions no biodegradation observed
Conclusions:
Not readily biodegradable.
Executive summary:

Information from migrated NONS file, as per inquiry number 06-0000020725-70-0000, permission to refer granted by ECHA.

Study conducted to GLP (taken from SNIF file). Registrant referring to studies >12 years old at the permission of ECHA.

 

Not readily biodegradable.