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EC number: 287-494-3 | CAS number: 85536-14-7
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.
- Justification for type of information:
- Category Approach; test material is reference substance LAS. LAS provides suitable read across for LAB Sulfonic Acids as both form the identical chemical species in aqueous solutions at neutral (environmental) pH, namely, the LAS ion (C10-13 linear alkyl benzene-SO3-) and would be expected to have similar ecotoxicological properties.
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:
- study report
- 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
- Molecular formula:
- Not applicable for UVCB
- IUPAC Name:
- sodium 4-undecylbenzenesulfonate
- Details on test material:
- - Name of test material (as cited in study report): LAS
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 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. 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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