Registration Dossier
Registration Dossier
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EC number: 700-490-2 | CAS number: 36635-56-0
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- other: not recorded in study report
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 988
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
- Deviations:
- yes
- Remarks:
- volume of test solution 1.5l instead of 3.0l
- Principles of method if other than guideline:
- Modified Sturm Test cited
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- N-[[(4-methylphenyl)sulfonyl]methyl]formamide
- EC Number:
- 700-490-2
- Cas Number:
- 36635-56-0
- Molecular formula:
- C9H11NO3S
- IUPAC Name:
- N-[[(4-methylphenyl)sulfonyl]methyl]formamide
- Details on test material:
- tet material cited as CGA224433 is CAS number 36635-56-0
batch number used - 709027
1% solubility in water
100% purity (determined by the study sponsor)
performed at 22°C +/- 2°C
Constituent 1
Study design
- Oxygen conditions:
- not specified
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Duration of test (contact time):
- ca. 28 d
Initial test substance concentration
- Initial conc.:
- ca. 10.3 mg/L
- Based on:
- test mat.
Results and discussion
% Degradation
- Parameter:
- % degradation (CO2 evolution)
- Value:
- ca. 74
- Sampling time:
- 28 d
- Remarks on result:
- other: sampled on days 5,11,14,18,21,24,27 & 28
- Details on results:
- 23% biodegradation was determined for the 20.0mg/l test solution
a reference substance was also prepared and ran, which showed 93.8% biodegradation over the 28 day study period
Applicant's summary and conclusion
- Interpretation of results:
- readily biodegradable
- Conclusions:
- the substance was found to be readily biodegradable under this test
- Executive summary:
2 different concentration test solutions were tested for ready biodegradability over 28 days in accprdanec with OECD test 301 B. The 10.3mg test solution was found to be 74% biodegraded and the 20.0mg/l test solution was 23% biodegraded, under the test conditions described
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