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EC number: 307-055-2 | CAS number: 97489-15-1
Biodegradation in water and sediment: simulation tests
Administrative data
- Endpoint:
- biodegradation in water: sewage treatment simulation testing
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1991
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: fehlt noch
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 991
- Report date:
- 1991
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 303 A (Simulation Test - Aerobic Sewage Treatment. A: Activated Sludge Units)
- GLP compliance:
- no
Test material
- Reference substance name:
- Hostapur SAS 93
- IUPAC Name:
- Hostapur SAS 93
- Reference substance name:
- Sulfonic acids, C14-17-sec-alkane, sodium salts
- EC Number:
- 307-055-2
- EC Name:
- Sulfonic acids, C14-17-sec-alkane, sodium salts
- Cas Number:
- 97489-15-1
- Molecular formula:
- H3C-(CH2)m-CH-(SO3Na)-(CH2)n-CH3
- IUPAC Name:
- Sulfonic acids, C14-17-sec-alkane, sodium salts
- Details on test material:
- - Name of test material (as cited in study report): Hostapur SAS 93
- Physical state: solid
- Analytical purity: 93%
- Composition of test material, percentage of components: 100% Hostapur SAS 93
- Lot/batch No.: no data
Constituent 1
Constituent 2
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- - Source of inoculum/activated sludge (e.g. location, sampling depth, contamination history, procedure): activated sludge collected from a treatment works receiving predominantly domestic sewage (sewage treatment plant Niederrad)
- Duration of test (contact time):
- 48 d
Initial test substance concentrationopen allclose all
- Initial conc.:
- 1 other: L/h
- Based on:
- test mat.
- Initial conc.:
- 5 - 20 mg/L
- Based on:
- other: Carbon
- Parameter followed for biodegradation estimation:
- DOC removal
- Details on study design:
- TEST CONDITIONS
- Composition of medium: synthetic wastewater with nutrient solutions according to OECD Guideline
TEST SYSTEM
- Culturing apparatus: OECD confirmatory test apparatus
- Number of culture flasks/concentration: 1
Results and discussion
% Degradation
- % Degr.:
- 96.2
- St. dev.:
- 2.55
- Parameter:
- DOC removal
- Sampling time:
- 34 d
- Transformation products:
- not measured
Applicant's summary and conclusion
- Conclusions:
- A biological degradation of 96.2 ± 2.55 % was reached after the initial 14-day equlilibration period, where increasing amounts of test item were added to the test system.
- Executive summary:
The ultimate biodegradability of Sulfonic acids, C13-17-sec-alkane, sodium salts was assessed in the aerobic sewege treatment simulation test using activated sludge units (OECD 303A). After the intial 14 -day equilibration period, where increasing amounts of test item were added to the test system, a degradation of 96.2 ± 2.55 % was achieved throughout the study period, as determined by daily DOC measurements over 34 days.
These results indicate that Sulfonic acids, C13-17-sec-alkane, sodium salts can be regarded as well biodegradable under conditions of the test.
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