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Environmental fate & pathways

Biodegradation in water: screening tests

Administrative data

Endpoint:
biodegradation in water: ready biodegradability
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
no data available
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: Documentation insufficient for assessment

Data source

Reference
Reference Type:
other company data
Title:
Unnamed

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 301 E (Ready biodegradability: Modified OECD Screening Test)
Version / remarks:
(1981)
Deviations:
not specified
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
2,2,4(or 2,4,4)-trimethylhexanedinitrile
EC Number:
283-810-9
EC Name:
2,2,4(or 2,4,4)-trimethylhexanedinitrile
Cas Number:
84713-17-7
Molecular formula:
C9H14N2
IUPAC Name:
2,2,4-trimethylhexanedinitrile; 2,4,4-trimethylhexanedinitrile
Details on test material:
2,2,4 (or 2,4,4)-Trimethylhexanedinitrile of Hüls AG, commercial purity (not quantified)

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
sewage, predominantly domestic (adaptation not specified)
Initial test substance concentration
Initial conc.:
10 mg/L
Based on:
DOC

Results and discussion

% Degradation
Parameter:
% degradation (DOC removal)
Value:
15
Sampling time:
28 d

Applicant's summary and conclusion

Interpretation of results:
other: not readily biodegradable
Conclusions:
The biodegradability of 2,2,4 (or 2,4,4)-trimethylhexanedinitrile in the Modified OECD Screening Test was determined as 15 % within 28 days.
Executive summary:

The biodegradability of 2,2,4 (or 2,4,4)-trimethylhexanedinitrile in the Modified OECD Screening Test was determined as 15 % (DOC removal) within 28 days at a starting DOC concentration of 10 mg/l.