Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 293-049-4 | CAS number: 91051-01-3
Sediment toxicity
Administrative data
Link to relevant study record(s)
Description of key information
Fatty acids, C16-18, zinc salts:
Sediment toxicity studies of fatty acids, C16-18, zinc salts are not available. Thus, read-across to the assessment entities soluble zinc substances and C16-18 fatty acids is applied since zinc cations and fatty acid anions (C16-18) determine fate and toxicity in the environment. Since C16 -18 fatty acids have a low potential for sediment toxicity, the sediment hazard assessment of fatty acids, C16-18, zinc salt is based on zinc ions. Please refer to the endpoint summary of the respective assessment entityfor further details.
Fatty acid anions (C16-18):
Fatty acids as contained in plant and animal tissue are a natural component of sediments, represent a significant part of the nutritional demands of living organisms, are rapidly degraded and non-bioaccumulative and have a low toxic potential in sediment.
Zinc:
Reliable data are available for 7 freshwater species with species mean NOECs (added - after correction for background) ranging from 146 to 1101 mg/kg dw. In addition, two field studies are available for freshwater sediments resulting in an overall NOECecosystem of 725 mg/kg d.w. added zinc and minor effects on species richness and macroinvertebrate density at 119 mg/kg d.w. added zinc.
Chronic toxicity data are available for 2 marine species: the amphipod Melita plumulosa with a NOEC (added) of 490 mg/kg dw for reproduction and the mangrove Avicennia marina with a NOEC (added) of 207.1 mg/kg dw for emergence.
Key value for chemical safety assessment
Additional information
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.
