Registration Dossier
Registration Dossier
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EC number: 201-383-9 | CAS number: 81-88-9
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
Data source
Reference
- Reference Type:
- publication
- Title:
- Biodegradation and bioaccumulation data of existing chemicals based on the CSCL Japan
- Author:
- MITI
- Year:
- 1 992
- Bibliographic source:
- Compild under the Safety Division Basic Industries Bureau Ministry of International Trade & Industry, Japan. Edited by Chemicals Inspection & Testing Institute, Japan.
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: no information on the method
- GLP compliance:
- not specified
Test material
- Reference substance name:
- 9-(2-carboxyphenyl)-3,6-bis(diethylamino)xanthylium chloride
- EC Number:
- 201-383-9
- EC Name:
- 9-(2-carboxyphenyl)-3,6-bis(diethylamino)xanthylium chloride
- Cas Number:
- 81-88-9
- Molecular formula:
- C28H31N2O3.Cl
- IUPAC Name:
- 9-(2-carboxyphenyl)-3,6-bis(diethylamino)xanthylium chloride
Constituent 1
Study design
- Oxygen conditions:
- not specified
- Inoculum or test system:
- not specified
- Details on inoculum:
- sludge: 30 mg/l
- Duration of test (contact time):
- ca. 28 d
Initial test substance concentration
- Initial conc.:
- ca. 100 mg/L
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- O2 consumption
Reference substance
- Reference substance:
- not specified
Results and discussion
% Degradation
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- ca. 0
- Sampling time:
- 28 d
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- In a biodegradation test in water, basic violet 10 was found not readily biodegradable after 28 days when tested initially at 100 mg/L.
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