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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 236-690-7 | CAS number: 13464-97-6
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Fresh water fish
Fresh water fish
- Effect concentration:
- 0.1 mg/L
Additional information
There are ten short-term fish toxicity studies, with all of the studies being based on read across data. The key study is a 48 hour acute study in fathead minnow, Pimephales promelas eggs. The eggs were exposed to hydrazine at nominal concentrations ranging from 0-5 mg/l. The LOEC was reported to be 0.1 mg/l with the effects being observed in hatching, growth rates, physiological anomalies, development and deformities. The study is classified as Klimisch Code 2 (reliable with restriction) as it was well reported and detailed and in a peer review publication.
The supporting studies include the following data a 96-hour NOEC of 0.43 mg/l in the bluegill,Lepomis macrochirus; a 48-hour LC50 of 0.75 mg/l in the golden orfe,Leucius idus melanotus; a 96-hour LC50 of 1 mg/l in the channel catfish,Ictalurus punctatus; two 96-hour LC50s of 1.08 mg/l in the bluegill,Lepomis macrochirus; 96-hour LC50s of 1.6, 1.0 and 1.2 mg/l in the bluegill,Lepomis macrochirus; a 96-hour LC50 of 1.12 mg/l in the golden shiner,Notemigonus crysoleucas; and 96-hour LC50s of 3.85 and 0.61 mg/l in the common guppy,Lebistes reticulatesand a 96-hour LC50 of 5.98 mg/l in fathead minnows.
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.
