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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 200-753-7 | CAS number: 71-43-2
Long-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
The 32 day NOEC is 0.8 mg/L for Pimephales promelas.
Key value for chemical safety assessment
Fresh water fish
Fresh water fish
- Effect concentration:
- 0.8 mg/L
Additional information
Russom and Broderius (1991) studied the toxicity of benzene in an early life stage test with Pimephales promelas. The exposure concentrations were measured at least twice a week during the exposure period. The most sensitive endpoint reported by the authors is a LOEC of 1.6 mg/L for wet weight and length. This value was the most conservative reliable chronic endpoint for freshwater fish identified in the EU RAR for benzene (2008). As the effect observed at this concentration was between 10 -20% a NOEC can be calculated by dividing the LOEC by two.
Although Black et al (1982) report a more sensitive EC10 this value was discounted in the EU RAR for benzene (2008) and so is discounted here also.
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.
