Registration Dossier
Registration Dossier
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EC number: 611-342-0 | CAS number: 55974-25-9
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: inherent biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2002
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Guideline study (OECD 302 B) but full details are not available. Therefore the reliability is with restricitions.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 002
- Report date:
- 2002
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 302 B (Inherent biodegradability: Zahn-Wellens/EMPA Test)
- GLP compliance:
- not specified
Test material
- Reference substance name:
- 7-methoxy-4,4-dimethyl-3,4-dihydro-1H-2-benzopyran-1,3-dione
- EC Number:
- 611-342-0
- Cas Number:
- 55974-25-9
- Molecular formula:
- C12 H12 O4
- IUPAC Name:
- 7-methoxy-4,4-dimethyl-3,4-dihydro-1H-2-benzopyran-1,3-dione
- Test material form:
- solid: particulate/powder
- Remarks:
- migrated information: powder
- Details on test material:
- - Name of test material (as cited in study report): Isochroman puro
- Physical state: powder
- Lot/batch No.: 01002
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- not specified
- Duration of test (contact time):
- 28 d
Reference substance
- Reference substance:
- not specified
Results and discussion
% Degradation
- Remarks on result:
- other: Information on results see below in the field "Any other information on results incl. tables".
Any other information on results incl. tables
Days of measurement of DQO
Initial 7 days 14 days 21 days 28 day
White 5.0 7.0 13 6.0 4.0
Standard 693 640 458 448 399
DQO 544 520 544 593 548
(mg/l O2)
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- under test conditions no biodegradation observed
- Conclusions:
- Owing the lack of response in the biodegradation of the product, a respirometry in a biological sewerage plant has been carried out, and it has been
proved and verified that Isochroman puro is not biodegradable.
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