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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 205-362-5 | CAS number: 139-42-4
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
96 h LL50 > 100 mg/L, 96 h NOELR >=100 mg/L, Oncorhynchus mykiss , OECD 203, EU Method C.1, RCC 2007
Key value for chemical safety assessment
Additional information
The acute toxicity of the test material, dicerium tricarbonate, to rainbow trout (Oncorhynchus mykiss) was determined in a 96-hour semi-static test with a daily test medium renewal. The study was conducted according to the EU Commission Directive 92/69/EEC, Part C.1 (1992), and the OECD Guideline for Testing of Chemicals No. 203 (1992).
During the study fish were exposed to control and test material at a loading rate of 100 mg/L for 96 hours. No mortality or other visible abnormalities were observed during the test.
The 96-hour NOELR and the 96-hour LL50 of dicerium tricarbonate to rainbow trout were thus determined to be > 100 mg/L (measured test material concentration of 5.6 µg/L).
In conclusion, the test material dicerium tricarbonate had no acute toxic effects on rainbow trout up to the solubility limit in the test water, at the loading rate of 100 mg/L.
This is the only reliable short-term toxicity study on fish that is available for the substance. It has been performed on a structural analogue, cerium carbonate. The similar toxicological profiles of cerium carbonate and cerium oxalate, along with the structural similarity, mean that this is considered to be an acceptable read-across approach.
The study was performed in line with a recognised OECD guideline and to GLP standard. It is assigned a score of 2 in line with the reliability scoring system of Klimisch et al (1997), based on the fact that a read across approach has been used.
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.
