Registration Dossier
Registration Dossier
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EC number: 615-907-2 | CAS number: 73097-51-5
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: inherent biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2006
- Reliability:
- 1 (reliable without restriction)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 006
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 302 C (Inherent Biodegradability: Modified MITI Test (II))
- Deviations:
- yes
- Remarks:
- see "principles of method if other than guideline"
- Principles of method if other than guideline:
- - Activated sludge from only one source was used.
- The test water was prepared according to OECD Guideline for Testing of Chemicals No. 301 F, Ready Biodegradability: Manometric Respirometry Test, 1992.
- Only the biological oxygen demand (BOD) was monitored, no test item specific analysis was performed. - GLP compliance:
- yes
Test material
- Reference substance name:
- N1-methyl-4-(methylsulfonyl)benzene-1,2-diamine
- EC Number:
- 615-907-2
- Cas Number:
- 73097-51-5
- Molecular formula:
- C8H12N2O2S
- IUPAC Name:
- N1-methyl-4-(methylsulfonyl)benzene-1,2-diamine
- Test material form:
- other: solid
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.:
- 35 mg/L
- Based on:
- test mat.
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- TOC removal
Reference substance
- Reference substance:
- benzoic acid, sodium salt
Results and discussion
% Degradation
- Parameter:
- other: based on BOD
- Value:
- 14
- Sampling time:
- 28 d
BOD5 / COD results
- Results with reference substance:
- Average degradation 78% and 93% by exposure days 7 and 14.
By the end of the test (Exposure Day 28), the reference item was completely degraded.
Applicant's summary and conclusion
- Interpretation of results:
- inherently biodegradable
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