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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 282-617-7 | CAS number: 84281-74-3
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
LC50, 96h, Danio Rerio= 24.1 mg/l
Key value for chemical safety assessment
Fresh water fish
Fresh water fish
- Effect concentration:
- 24.1 mg/L
Additional information
One study is available for acute toxicity to fish for Basic Brown 1 Acetate (acetic acid aqueous solution) and another one on the analogue substance 1. Since both substances show the same level of toxicity, the test on Basic Brown 1 Acetate performed following OECD 203 (Robama, 2001) was chosen as key study. Under the experimental conditions the Basic Brown 1 Acetate showed an LC50, 96h equal to 24.1 mg/l (LC50 recalculated to the dye concentration).
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.
