Registration Dossier
Registration Dossier
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EC number: 270-451-8 | CAS number: 68440-34-6
Toxicity to soil macroorganisms except arthropods
Administrative data
Link to relevant study record(s)
Description of key information
FATTY ACIDS, C14 -18 AND C16 -18 -UNSATD., ZINC SALTS:
No toxicity data are available for Fatty acids, C14-C18 and C16-18-unsatd., zinc salts. Read-across to insoluble/ slightly soluble zinc substances is made, and the PNEC soil as derived in the Chemical Safety Assessment of "Zinc" within the framework of Regulation (EC) No 1907/2006 (see Appendix 1) is carried over to Fatty acids, C16-18, zinc salts.
ZINC:
37 NOEC or EC10 values on soil macroorganisms are available covering 6 different worm species and vary from 35.7 mg Zn/kg for Enchytraeus albidus to 1634 mg Zn/kg dw for Lumbricus terrestris
Key value for chemical safety assessment
Additional information
As no terrestrial toxicity data are available forFatty acids, tallow, zinc salts or for the read-across substance Fatty acids, C16 - 18, zinc salts, a read-across to inorganic zinc substances is made as a worst case approachin accordance to Regulation (EC) No 1907/2006 Annex XI, 1.5. As in the EU Risk Assessment Report (RAR) for zinc stearate, it is assumed that upon dissolutionFatty acids, tallow, zinc saltsis changed in part to ionic zinc and that only ionic zinc is determining biological activities. The soil macroorganism toxicity data available for zinc is summarized below. For a comprehensive overview of the ecotoxicity of zinc, see the hazard assessment of "Zinc" within the framework of Regulation (EC) No 1907/2006.
ZINC:
37 NOEC or EC10 values cover 6 different worm species and vary from 35.7 mg Zn/kg for Enchytraeus albidus (Lock and Janssen, 2001c) to 1634 mg Zn/kg dw for Lumbricus terrestris (Spurgeon et al., 2000).
All toxicity data are expressed as added Zn concentration in soil, based on either the nominal dose added or on measured, background corrected soil Zn concentrations.
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.
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