Registration Dossier
Registration Dossier
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Reaction mass of disodium 2-({4-methyl-2-[(4-{[5-methyl-1-(2-sulfonatophenyl)hexan-3-yl]amino}-9,10-dioxo-9,10-dihydroanthracen-1-yl)methyl]pentyl}amino)benzene-1-sulfonate,disodium 4-{5-methyl-3-[(4-{[5-methyl-1-(4-sulfonatophenyl)hexan-3-yl]amino}-9,10-dioxo-9,10-dihydroanthracen-1-yl)amino]hexyl}benzene-1-sulfonate anddisodium 4-{5-methyl-3-[(4-{[5-methyl-1-(2-sulfonatophenyl)hexan-3-yl]amino}-9,10-dioxo-9,10-dihydroanthracen-1-yl)amino]hexyl}benzene-1-sulfonate
EC number: 947-270-4 | CAS number: -
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:
- 1975
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- documentation insufficient for assessment
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 975
- Report date:
- 1975
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 302 B (Inherent biodegradability: Zahn-Wellens/EMPA Test)
- GLP compliance:
- no
Test material
- Reference substance name:
- Disodium [(9,10-dihydro-9,10-dioxo-1,4-anthrylene)bis(imino-4,1-phenyleneoxy)]bis(benzenesulphonate)
- EC Number:
- 274-355-7
- EC Name:
- Disodium [(9,10-dihydro-9,10-dioxo-1,4-anthrylene)bis(imino-4,1-phenyleneoxy)]bis(benzenesulphonate)
- Cas Number:
- 70161-19-2
- Molecular formula:
- C38H26N2O10S2.2Na
- Test material form:
- solid: particulate/powder
- Details on test material:
- Acid Green 40
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, industrial (adaptation not specified)
- Duration of test (contact time):
- 31 d
Initial test substance concentrationopen allclose all
- Initial conc.:
- 20 mg/L
- Based on:
- TOC
- Initial conc.:
- 23.3 mg/L
- Based on:
- test mat.
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- TOC removal
- Details on study design:
- TEST CONDITIONS
- Composition of medium: TOC content of medium: 108 mg/L
TEST SYSTEM
- Number of culture flasks/concentration: 1
CONTROL AND BLANK SYSTEM
- Inoculum blank: yes
Results and discussion
% Degradation
- Key result
- Parameter:
- % degradation (TOC removal)
- Value:
- 0
- St. dev.:
- 0
- Sampling time:
- 31 d
BOD5 / COD results
BOD5 / CODopen allclose all
- Parameter:
- BOD5
- Value:
- 0 mg O2/g test mat.
- Remarks on result:
- other: Test item conc. 500 mg/L
- Parameter:
- COD
- Value:
- 1 092 mg O2/g test mat.
- Remarks on result:
- other: Test item conc. 500 mg/L
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- under test conditions no biodegradation observed
- Conclusions:
- The substance was found to be not inherently biodegradable (0% after 31 d based on TOC removal). The ratio BOD5/CSB does not indicate any potential for biodegradation.
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