Registration Dossier
Registration Dossier
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EC number: 266-936-9 | CAS number: 67701-12-6 This substance is identified by SDA Substance Name: C14-C18 and C16-C18 unsaturated alkyl carboxylic acid zinc salt and SDA Reporting Number: 04-006-09.
Toxicity to terrestrial plants
Administrative data
Link to relevant study record(s)
Description of key information
Fatty acids, C14-18 and C16-18-unsatd., zinc salts:
Reliable studies of the toxicity of Fatty acids, C14-18 and C16-18-unsatd., zinc salts to terrestrial plants are not available. Thus, read-across to the assessment entities soluble zinc substances and C14-18 fatty acids is applied, since zinc cations and fatty acid anions determine its fate and toxicity in the environment. Since C14-18-satd. and C16-18-unsatd. fatty acids have a low potential for ecotoxicity, the hazard assessment of Fatty acids, C14-18 and C16-18-unsatd., zinc salts is based on zinc ions. Please refer to the endpoint summary of the respective assessment entity for further details.
Fatty acid anions (C14-18-satd. and C16-18-unsatd.):
Fatty acids as contained in plant and animal tissue are a natural component of soil, represent a significant part of the nutritional demands of living organisms, are rapidly degraded and non-bioaccumulative and have a low toxic potential for terrestrial plants. Based on the absence of a hazard potential in the aquatic compartment, a similar low potential is also assumed for terrestrial plants. This is confirmed in the risk assessment of C7 to C18 fatty acids by EFSA (2013) since based on a vegetation/vigour test, the risk to non-target plants is low.
ZINC:
NOEC and EC10 values are available for 18 different species and range from 32 mg Zn/kg dw for Trifolium pratense and Vicia sativa to 5855 mg Zn/kg dw for Triticum aestivum.
Key value for chemical safety assessment
Additional information
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