Registration Dossier
Registration Dossier
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EC number: 235-868-1 | CAS number: 13014-18-1
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:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 981
- Report date:
- 1981
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: Respirometer test in HACH apparatus
- Principles of method if other than guideline:
- Determination of CSB determination and BSB5
- GLP compliance:
- no
Test material
- Reference substance name:
- 2,4-dichloro-1-(trichloromethyl)benzene
- EC Number:
- 235-868-1
- EC Name:
- 2,4-dichloro-1-(trichloromethyl)benzene
- Cas Number:
- 13014-18-1
- Molecular formula:
- C7H3Cl5
- IUPAC Name:
- 2,4-dichloro-1-(trichloromethyl)benzene
Constituent 1
Study design
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Duration of test (contact time):
- 15 d
Initial test substance concentration
- Initial conc.:
- other: saturated solution obtained under hydrolytic incubation conditions (pH 9-8, 48 hrs stirring) of parent compound
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- other: CSB elimination
- Details on study design:
- The test material was dissolved in water under conditions of hydrolysis: pH 9 - 10; mixed for 48h. The experiments was determined with a saturated solution.
Results and discussion
% Degradationopen allclose all
- Parameter:
- other: CSB elemination
- Value:
- < 10
- Sampling time:
- 5 d
- Parameter:
- other: CSB elemination
- Value:
- < 10
- Sampling time:
- 10 d
- Parameter:
- other: CSB elemination
- Value:
- < 10
- Sampling time:
- 15 d
BOD5 / COD results
BOD5 / COD
- Parameter:
- BOD5
- Value:
- < 10 mg O2/g test mat.
Any other information on results incl. tables
Based on the test results a BSB5/CSB ratio of <<0.5 is calculated. According to Regulation (EC) 1272/2008 this indicates that the test subsance is not readily biogegradable.
Applicant's summary and conclusion
- Conclusions:
- The test item is not readily biodegradable.
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