Registration Dossier
Registration Dossier
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EC number: 947-999-8 | CAS number: -
Toxicity to terrestrial plants
Administrative data
- Endpoint:
- toxicity to terrestrial plants: short-term
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Well-documented study.
Data source
Referenceopen allclose all
- Reference Type:
- publication
- Title:
- Phytotoxicity of surfactants to higher plants.
- Author:
- Gunther, P, and Pestemer, W
- Year:
- 1 992
- Bibliographic source:
- Hall, JE, Sauerbeck, DE, Hermite, PL (Eds.), Effects of Organic Contaminants in Sewage Sludge on Soil Fertility, Plants, and Animals. Office for Official Publications of the European Communities, Brussels, Belguim, pp. 103-111.
- Reference Type:
- other company data
- Title:
- Unnamed
- Year:
- 2 010
- Report date:
- 2010
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Three species of crop plant B. rapa, A. sativa, and S. alba, were grown in soil containing concentrations of LAS that varied from 0 -10,000 mg/kg dw soil. The seedlings were grown for 14 days, and then weighed. The weight was compared to weights of controls plants.
- GLP compliance:
- no
Test material
- Reference substance name:
- Benzenesulfonic acid, C10-13-alkyl derivs., sodium salts
- EC Number:
- 270-115-0
- EC Name:
- Benzenesulfonic acid, C10-13-alkyl derivs., sodium salts
- Cas Number:
- 68411-30-3
- IUPAC Name:
- sodium 4-undecylbenzenesulfonate
- Test material form:
- solid
Constituent 1
Sampling and analysis
- Analytical monitoring:
- not specified
Test organisms
open allclose all
- Species:
- Avena sativa
- Plant group:
- Monocotyledonae (monocots)
- Details on test organisms:
- - Common name: oats
- Species:
- Brassica rapa
- Plant group:
- Dicotyledonae (dicots)
- Details on test organisms:
- - Common name: turnip
- Species:
- Sinapis alba
- Plant group:
- Dicotyledonae (dicots)
- Details on test organisms:
- - Common name: mustard
Study design
- Test type:
- early seedling growth toxicity test
- Study type:
- laboratory study
- Substrate type:
- other: soil, not specified
- Total exposure duration:
- 14 d
Test conditions
- pH:
- 6.1
- Moisture:
- 23.2 g/100 g soil
- Details on test conditions:
- TEST SYSTEM
- Test container (type, material, size): self-watering pots
- Amount of soil: 70 g
SOURCE AND PROPERTIES OF SUBSTRATE (if soil)
- Soil texture (if natural soil)
- % sand: 54.3
- % silt: 35.7
- % clay: 9.9
- Soil classification system: sandy loam soil
- Organic carbon (%): 1.3
- Maximum water holding capacity (in % dry weigth): 23.2 g/100 g soil
EFFECT PARAMETERS MEASURED (with observation intervals if applicable) : shoot fresh weight at 14 days - Nominal and measured concentrations:
- 9 concentrations from 0 - 10,000 mg/kg soil
Results and discussion
Effect concentrationsopen allclose all
- Species:
- Avena sativa
- Duration:
- 14 d
- Dose descriptor:
- EC10
- Effect conc.:
- 80 mg/kg soil dw
- Nominal / measured:
- nominal
- Basis for effect:
- growth
- Species:
- Brassica rapa
- Duration:
- 14 d
- Dose descriptor:
- EC10
- Effect conc.:
- 86 mg/kg soil dw
- Nominal / measured:
- nominal
- Basis for effect:
- growth
- Species:
- Sinapis alba
- Duration:
- 14 d
- Dose descriptor:
- EC10
- Effect conc.:
- 200 mg/kg soil dw
- Nominal / measured:
- nominal
- Basis for effect:
- growth
- Species:
- Avena sativa
- Duration:
- 14 d
- Dose descriptor:
- EC50
- Effect conc.:
- 300 mg/kg soil dw
- Nominal / measured:
- nominal
- Basis for effect:
- growth
- Species:
- Sinapis alba
- Duration:
- 14 d
- Dose descriptor:
- EC50
- Effect conc.:
- 300 mg/kg soil dw
- Nominal / measured:
- nominal
- Basis for effect:
- growth
- Species:
- Brassica rapa
- Duration:
- 14 d
- Dose descriptor:
- EC50
- Effect conc.:
- 1 641 mg/kg soil dw
- Nominal / measured:
- nominal
- Basis for effect:
- growth
- Details on results:
- There was a steep dose-response curve in all species.
Applicant's summary and conclusion
- Conclusions:
- The EC10 for B. rapa was 86 mg/kg dw soil, for A. sativa it was 80 mg/kg dw soil, and for S. alba it was 200 mg/kg soil.
- Executive summary:
Three species of crop plant B. rapa, A. sativa, and S. alba, were grown in soil containing concentrations of LABS Na that varied from 0 -10,000 mg/kg dw soil. The seedlings were grown for 14 days, and then weighed. The weight was compared to weights of controls plants. All three species showed a dose-related reduction in growth. The EC10 for B. rapa was 86 mg/kg dw soil, for A. sativa it was 80 mg/kg dw soil, and for S. alba it was 200 mg/kg dw soil.
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