Registration Dossier
Registration Dossier
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EC number: 270-451-8 | CAS number: 68440-34-6
Toxicity to aquatic plants other than algae
Administrative data
Link to relevant study record(s)
Description of key information
FATTY ACIDS, C14 -18 AND C16 -18 -UNSATD., ZINC SALTS:
No freshwater plants 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 PNECs water as derived in the Chemical Safety Assessment of "Zinc" within the framework of Regulation (EC) No 1907/2006 (see Appendix 1) are carried over to Fatty acids, C14-18 and C16-18 unsatd., zinc salts.
ZINC:
chronic NOEC for one multicellular algae species available (0.06mg Zn/l).
Additional supportive information on 4 higher aquatic plant species available; chronic NOEC >650µg Zn/l on all 4 species tested.
Key value for chemical safety assessment
Additional information
Only supporting data on inorganic zinc substances is available.
ZINC:
The EU risk assessment on zinc (ECB 2008) used one chronic NOEC on Cladophora glomerata in the PNEC database. Additional information on long term experiments on 4 higher aquatic plant species was used as supportive evidence, demonstrating the low sensitivity of this taxonomic group.
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