Registration Dossier
Registration Dossier
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EC number: 411-490-4 | CAS number: 7027-11-4 ISOPHORONENITRILE, IPN
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: inherent biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 990
- Report date:
- 1990
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 302 B (Inherent biodegradability: Zahn-Wellens/EMPA Test)
- GLP compliance:
- no
Test material
- Reference substance name:
- 3-cyano-3,5,5-trimethylcyclohexanone
- EC Number:
- 411-490-4
- EC Name:
- 3-cyano-3,5,5-trimethylcyclohexanone
- Cas Number:
- 7027-11-4
- Molecular formula:
- C10 H15 N O
- IUPAC Name:
- 3-cyano-3,5,5-trimethylcyclohexanone
- Details on test material:
- Test substance: 3-cyan-3.5.5-trimethylcyclohexanon
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, industrial (adaptation not specified)
- Details on inoculum:
- dry substance 1 g/L
- Duration of test (contact time):
- 28 d
Initial test substance concentrationopen allclose all
- Initial conc.:
- 218 mg/L
- Based on:
- DOC
- Initial conc.:
- 288 mg/L
- Based on:
- test mat.
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- DOC removal
Results and discussion
% Degradation
- Parameter:
- % degradation (DOC removal)
- Value:
- 19
- Sampling time:
- 28 d
Any other information on results incl. tables
The testing of the readily biodegradability is not necessary, because the substance is not inherently biodegradable. Therefore biodegradation processes in a OECD 301 test cannot be expected.
Applicant's summary and conclusion
- Interpretation of results:
- other: poorly eliminated in water
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