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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 932-833-9 | CAS number: -
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
PLACE HOLDER await study
In addition, a preliminary investigation of ferric citrate in the same study reported no effects at the highest concentration tested (100 mg/l).
The result is supported by a 24 h EC50 value of 1535 mg/L for the effects of citric acid to the Daphnia magna (Bringmann and Kuhn 1982).
Toxicity data for iron indicate short-term effects in the range 10-100 mg/l, however these are mediated via the production of insoluble iron oxides and hydroxides. The effects are due to smothering or clogging of respiratory membranes rather than intrinsic toxicity. In addition, pH effects confound iron toxicity.
The result is supported by a 24 h EC50value of 1535 mg/l for the effects of citric acid to the Daphnia magna (Bringmann and Kuhn 1982).
A 48-hour EC50 value of 169 mg/l has been reported in the online disseminated dossier for ammonium sulfate (CAS: 7783 -20 -2) as the lowest short-term toxicity value for Daphnia magna as given in U.S. EPA (1999). A 48 -hour EC50 value of 121.7 mg/l is also reported for Ceriodaphnia acanthina. The EC50 values are adjusted to pH 8 and are equivalent to a NOEC 2.4 mg un-ionized NH3/l for D. magna and 1.75 mg un-ionized NH3/l for C. acanthina.
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.
