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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 279-919-6 | CAS number: 82205-20-7
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
The acute toxicity of the pyridinium version of the registered substance to rainbow trout (O. mykiss) was determined after 96 h of exposure under static renewal conditions at nominal concentrations of up to 100 mg/L.
The 96-h LC50was 59 mg/L. Neither mortality nor sublethal effects were observed after 96 h exposure at 32 mg/L.
The test item has a concentration of 45 % in the test material. Based on this concentration, the LC50 (96 h) for the test item itself is ca. 26.55 mg/L. This value is used as key value in the chemical safety assessment.
The other constituents of the test material, mainly water and also acetic acid, are not considered to have influenced the overall outcome of the study. Water is per se non-toxic to fish, and acetic acid has an LC50 (96 h) value of >300.82 mg/l based on the effect of the acetate ion (see ECHA dissemination page).
The result obtained for the pyridinium version of the test item is supported by secondary information which is available for the test item itself:
The 96-h LC50 of a mixture containing the test item at a concentration of 57.2 % is 44 mg/L (test species: B. rerio) which is equivalent to a 96-h LC50 of 25 mg/L for the test item itself.
The other constituents (amongst others water and acetic acid) are not considered to have influenced the overall outcome of the study as the LC50 values for the relevant substances are > 100 mg/L.
Key value for chemical safety assessment
Fresh water fish
Fresh water fish
- Effect concentration:
- 26.55 mg/L
Additional information
This information is used in a read-across approach in the assessment of the target substance.
For details and justification of read-across please refer to the attached report in section 13 of IUCLID.
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.
