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EC number: 293-917-2
CAS number: 91648-55-4
14d EC0 (Brassica rapa, seedling emergence and growth) > 1000 mg/kg soil
d.w. (nominal concentration, UBA Berlin, 3/1984)
In accordance to Regulation (EC) No. 1907/2006 Annex XI, 1.5 a
read-across to another structurally related substance was conducted.
Read-across data available for C16-18AS Na (CAS 68955-20-4) were used,
since toxicity of alkyl sulfates is dependent on the carbon chain length.
One reliable study with terrestrial plants is available for C16-18AS Na
(CAS 68955-20-4). The key non-GLP study followed the procedure for
phytotoxicity testing on Avena sativa and Brassica rapa, 14 d, UBA
Berlin, 3/1984 (Steber 1988). Plants were exposed to the test substance
for 14 days in artificial soil. The 14-day EC0 value for Brassica rapa
based on seedling emergence and growth was above 1000 mg a.i./kg soil
d.w (nominal concentration).
Besides, the Equilibrium Partitioning Method is sufficient to calculate
the PNECs values for the terrestrial compartment. The substance exhibits
an adsorption coefficient (log Koc) below 5 and is readily
biodegradable. 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).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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