Registration Dossier
Registration Dossier
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EC number: 204-812-8 | CAS number: 126-92-1
Toxicity to terrestrial plants
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
- Long-term EC10, LC10 or NOEC for terrestrial plants:
- 100 mg/kg soil dw
Additional information
The substance exhibits an adsorption coefficient (log Koc) below 5 and is readily biodegradable. Moreover, the substance is not acutely toxic in the aquatic compartment (EC/LC50 for fish, Daphnia and algae above 1 mg/L). In case of exposure to soil, the substance is expected to rapidly degrade, thus the hazard to terrestrial organisms is negligible. Hence, the Equilibrium Partitioning Method is sufficient to calculate the PNECs values for the terrestrial compartment according to the “Guidance on information requirements and chemical safety assessment Chapter R.7c: Endpoint specific guidance”, Section 7.11.6 Integrated Testing Strategy for Effects on Terrestrial Organisms (ECHA 2008). Nevertheless for the completeness of information, two short-term studies with plants are included.
Two reliable reports on the effects of C8-isoAS Na (CAS 126-92-1) on terrestrial plants according to OECD 208 guidance are available (Scholz 1995). Three plant species: garden cress (Lepidum sativum), wheat grass (Triticum aestivum) and white mustard (Brassica alba) were exposed to 3 test concentrations up to 100 mg/kg soil d.w. (nominal concentration) for 17 days. Seedlings emergence and seedlings growth were determined. Since no significant effects in treated plants were observed up to the highest test concentration when comparing to the control, the NOEC value for all three tested species was defined as 100 mg/ kg soil d.w. (nominal concentration).
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