Registration Dossier
Registration Dossier
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EC number: 931-534-0 | CAS number: 68439-57-6
Toxicity to terrestrial plants
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
The only available toxicity data for plants (Lopez-Zavala, 1975) was excerpted from an insufficiently documented study. However, the data indicate that toxic effects on soil organisms might only be expected at very high concentrations for α-olefin sulfonates. Seedling emergence, weight and growth were reported, and the test substance (10, 25 and 40 mg/L daily by watering over 5 months) do not cause a negative effect to the tested plants compared to the control.
In accordance with Regulation (EC) No. 1907/2006, Annex X, section 9.4, column 2, further studies on terrestrial organisms do not have to be conducted since the chemical safety assessment indicates that there is no need. The terrestrial toxicity of the Sulfonic acids, C14-16 (even numbered)-alkane hydroxy and C14-16 (even numbered)-alkene, sodium salts has been further tested with the earth-worm Eisenia fetida. No Observed Effect Concentration (NOEC) for mortality and weight changes was determined to be the concentration of 1000 mg test item/kg soil. The No Observed Effect Concentration (NOEC) for reproduction was determined to be the concentration of 316 mg test item/kg soil.
Based on the available data, no toxicity of Sulfonic acids, C14-16 (even numbered)-alkane hydroxy and C14-16 (even numbered)-alkene, sodium salts to terrestrial organisms is expected. Additionally, the substance is not expected to remain in the terrestrial environment, due to ready biodegradability and low adsorption potential, reducing the potential for chronic exposure.
Based on this information, toxicity to terrestrial plants is not expected to be of concern, and consequently, no further testing is required.
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