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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 237-537-7 | CAS number: 13827-02-6
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
The 48-h EC50 value for potassium trifluorozincate in water fleas (Daphnia magna) of 7.3 mg/L, which is equivalent to 2.97 mg zinc/L and 2.58 mg fluoride/L based on the molecular weight fractions for zinc and fluoride of 40.7% and 35.4%, respectively.
Key value for chemical safety assessment
Additional information
A GLP-compliant OECD 202 guideline study with Daphnia magna is available (Solvay Pharmaceuticals, 2002). Daphnids (30/dose) were exposed to nominal concentrations of 1.0, 2.2, 5.0, 11 and 25 mg/L under static conditions for 48 hours. The test concentrations were analytically verified and were within ±20% of the nominal concentration. Therefore, biological effect concentrations are expressed based on the nominal concentrations. The 48-h EC50 value for potassium trifluorozincate is 7.3 mg/L.
As potassium trifluorozincate in water rapidly dissociates into its various ions, it is these ions that are expected to be present in the environment and which will therefore be assessed. Therefore, effect values for potassium trifluorozincate are also expressed as zinc and fluoride based on their respective molecular weight fractions (potassium is not assessed because of its environmental abundance and low toxicity). This leads to 48 -h EC50 values 2.97 mg zinc/L and 2.58 mg fluoride/L.
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.
