Registration Dossier
Registration Dossier
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EC number: 946-091-9 | CAS number: -
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 15 Apr - 13 May 1991
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Justification for type of information:
- Refer to the Analogue Approach Justification document provided in IUCLID6 Section 13.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 992
- Report date:
- 1992
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 E (Ready biodegradability: Modified OECD Screening Test)
- Deviations:
- no
- GLP compliance:
- yes
Test material
- Reference substance name:
- Sulfuric acid, mono-C12-18-alkyl esters, ammonium salts
- EC Number:
- 292-211-1
- EC Name:
- Sulfuric acid, mono-C12-18-alkyl esters, ammonium salts
- Cas Number:
- 90583-13-4
- IUPAC Name:
- Sulfuric acid, mono-C12-18-alkyl esters, ammonium salts
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 10 mg/L
- Based on:
- DOC
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- DOC removal
Reference substance
- Reference substance:
- benzoic acid, sodium salt
Results and discussion
% Degradation
- Parameter:
- % degradation (DOC removal)
- Value:
- > 91 - < 94
- Sampling time:
- 28 d
Any other information on results incl. tables
| Biodegradation % | |||
| Day | Test substance sample 1 | Test substance sample 2 | Reference substance |
| 3 | 100 | 100 | 100 |
| 7 | 84 | 90 | 92 |
| 10 | 83 | 91 | 96 |
| 14 | 91 | 93 | 96 |
| 17 | 92 | 90 | 96 |
| 21 | 95 | 90 | 100 |
| 28 | 94 | 91 | 100 |
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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