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EC number: 290-714-0 | CAS number: 90218-39-6
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: screening tests
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 1974
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- documentation insufficient for assessment
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 974
- Report date:
- 1974
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method C.5 (Degradation: Biochemical Oxygen Demand)
- Principles of method if other than guideline:
- BSB5 : Method DEV H5
CSB: Method DEV H4
pH=9.6 (conc. 1g/l) - GLP compliance:
- no
Test material
- Reference substance name:
- Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[5-nitro-, disodium salt, reaction products with 4-[(4-aminophenyl)azo]benzenesulfonic acid, sodium salts
- EC Number:
- 215-397-8
- EC Name:
- Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[5-nitro-, disodium salt, reaction products with 4-[(4-aminophenyl)azo]benzenesulfonic acid, sodium salts
- Cas Number:
- 1325-54-8
- Molecular formula:
- Molecular formula of the main constituents: (1) C38H24N8Na4O12S4 (2) C52H32N10Na6O18S6
- IUPAC Name:
- Reaction mass of Tetrasodium 5-[[4-[(4-sulfonatophenyl)diazenyl]phenyl]diazenyl]-2-[2-[2-sulfonato-4-[[4-[(4-sulfonatophenyl)diazenyl]phenyl]diazenyl]phenyl]ethenyl]benzenesulfonate and Hexasodium 2-((E)-2-sulfonato-4-((E)-(3-sulfonato-4-((E)-2-sulfonato-4-((E)-(4-((E)-(4-sulfonatophenyl)diazenyl)phenyl)diazenyl)styryl)phenyl)diazenyl)styryl)-5-((E)-(4-((E)-(4- sulfona-tophenyl)diazenyl)phenyl)diazenyl)benzenesulfonate.
- Test material form:
- solid: particulate/powder
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Duration of test (contact time):
- 5 d
Results and discussion
% Degradation
- Remarks on result:
- other: BOD5/COD
BOD5 / COD results
BOD5 / CODopen allclose all
- Key result
- Parameter:
- BOD5
- Value:
- 12 mg O2/g test mat.
- Parameter:
- COD
- Value:
- 617 mg O2/g test mat.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- under test conditions no biodegradation observed
- Conclusions:
- The substance has a BOD5 of 12 mg O2/g test mat. The ratio BOD5/COD is ca. 2, not indicating any potential for biodegradation.
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