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EC number: 276-374-6 | CAS number: 72139-17-4
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: inherent biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 25 Sep - 04 Nov 1986
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- documentation insufficient for assessment
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 986
- Report date:
- 1986
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:
- Disodium 1-amino-4-[[3-[(5-chloro-2,6-difluoro-4-pyrimidinyl)amino]-2-methyl-5-sulphonatophenyl]amino]-9,10-dihydro-9,10-dioxoanthracene-2-sulphonate
- EC Number:
- 276-374-6
- EC Name:
- Disodium 1-amino-4-[[3-[(5-chloro-2,6-difluoro-4-pyrimidinyl)amino]-2-methyl-5-sulphonatophenyl]amino]-9,10-dihydro-9,10-dioxoanthracene-2-sulphonate
- Cas Number:
- 72139-17-4
- Molecular formula:
- C25H16ClF2N5O8S2.2Na
- IUPAC Name:
- disodium 1-amino-4-({3-[(5-chloro-2,6-difluoropyrimidin-4-yl)amino]-2-methyl-5-sulfophenyl}amino)-9,10-dioxo-9,10-dihydroanthracene-2-sulfonate
- Test material form:
- solid
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, industrial (adaptation not specified)
- Duration of test (contact time):
- 28 d
Initial test substance concentrationopen allclose all
- Initial conc.:
- 266 mg/L
- Based on:
- test mat.
- Initial conc.:
- 100 mg/L
- Based on:
- DOC
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- DOC removal
Results and discussion
% Degradation
- Parameter:
- % degradation (DOC removal)
- Value:
- 18
- Sampling time:
- 28 d
Any other information on results incl. tables
| time | blank | test substance | ||
DOC [mg/L] |
DOC [mg/L] |
DOC net [mg/L] |
degradation [%] |
|
| 0h | 19 | 104 | 85 | 0 |
| 3h | 19 | 106 | 87 | 0 |
| 1d | 16 | 95 | 79 | 7 |
| 7d | 22 | 91 | 69 | 19 |
| 14d | 21 | 91 | 70 | 18 |
| 21d | 18 | 87 | 69 | 19 |
| 27d | 22 | 91 | 69 | 19 |
| 28d | 18 | 88 | 70 | 18 |
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- not inherently biodegradable
- Conclusions:
- The maximum degradation after 28 d was determined to be 18%. The substance is not considered to be readily biodegradable.
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