Registration Dossier
Registration Dossier
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EC number: 248-326-4 | CAS number: 27213-90-7
Biodegradation in soil
Administrative data
- Endpoint:
- biodegradation in soil
- Type of information:
- migrated information: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Study period:
- 2001
- Reliability:
- 1 (reliable without restriction)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 001
- Report date:
- 2001
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- other: (U.S.) Environmental Protection Agency, Pesticide Assessment Guidelines, Subdivision N Chemistry: Environmental Fate § 162-1 Aerobic soil metabolism studies, October 1982
- Qualifier:
- according to guideline
- Guideline:
- other: BBA Guideline for the Official Testing of Plant Protectants, Part IV, 4-1, 1986
- Qualifier:
- according to guideline
- Guideline:
- other: Commission Directive 95/36/EC amending Council Directive 91/414/EEC (Annexes I and II, Fate and Behaviour in the Environment), July 14, 1995
- Qualifier:
- according to guideline
- Guideline:
- other: SET AC Procedures for Assessing the Environmental Fate and Ecotoxicity of Pesticides, March 1995
- GLP compliance:
- yes
- Test type:
- laboratory
Test material
- Reference substance name:
- Naphthalenesulfonic acids, branched and linear Bu derivs., sodium salts
- EC Number:
- 293-346-9
- EC Name:
- Naphthalenesulfonic acids, branched and linear Bu derivs., sodium salts
- Cas Number:
- 91078-64-7
- Molecular formula:
- Not applicable (a generic molecular formula can not be provided for this specific UVCB substance)
- IUPAC Name:
- Naphthalenesulfonic acids, branched and linear Bu derivs., sodium salts
- Test material form:
- solid: particulate/powder
- Remarks:
- migrated information: powder
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Soil classification:
- other: Monheim 3
- Details on soil characteristics:
- The study was performed with the soil "Monheim 3" a sandy loam from the "NRW", Germany. It is an "agriculturally used soil" which was used in a great
number of studies already and this soil meets the requirements of the registration authorities
Textural class [USDA]: sandy loam
Duration of test (contact time)
- Duration:
- > 0.1 - < 180 d
Initial test substance concentration
- Initial conc.:
- 140 mg/kg soil d.w.
Experimental conditions
- Temp.:
- 20+/-2°C
- Humidity:
- 40% of the maximum water holding capacity
Results and discussion
Half-life / dissipation time of parent compound
- DT50:
- 137 d
- Type:
- (pseudo-)first order (= half-life)
- Remarks on result:
- other: r2 = 0.81
- Transformation products:
- not specified
Applicant's summary and conclusion
- Conclusions:
- The test item was degraded in soil. The DT-50 value (half-life) in the soil "Monheim 3" was calculated to be 137 days following first order reaction kinetics.
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