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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 823-780-1 | CAS number: 1034820-43-3
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
No toxic effects occur up to the water solubility
LC50 > 71.0 mg/l (measured)
Key value for chemical safety assessment
Fresh water fish
Fresh water fish
- Effect concentration:
- 71 mg/L
Additional information
The evaluation of the toxicity potential of the substance to fish was done by the assessment of the experimental data on Similar Substance 01. No experimental data is available for the (target) substance. Justification for Read Across is given in Section 13 of IUCLID.
The substance was tested in a non-GLP guideline study according to the OECD Guideline 203. Ten Zebra fish were exposed under static conditions to different concentrations of the substances for 96 hours and the fish were observed for mortality.
In the Key study, the zebra fish were exposed to five concentrations of Similar Substance 01: 10, 18, 32, 58 and 100 mg/l (nominal) corresponding to 5.15, 11.3, 18.5, 46.3, 71.3 mg/l, respectively (measured). The substance was mixed with alkylphenol-polyglycoether and tetrahydrofuran to make a stock solution (1 and 132 mg/l, respectively). The test substance was present at least partially as a suspension. The LC0 and the LC50(96h) in Danio rerio are both higher than 71 mg/l (measured conc.). No mortality was observed.
The effect concentration is well above their water solubility limit (<1 mg/l). Therefore,it represents a worst-case assumption where water solubility is achieved by excessive use of solvent. In conclusion, the substance shows no effect in the range of water solubility.
Target substance is expected to have the same toxicity potential and thus is not considered to have effects up to the limit of solubility.
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.
