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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 274-581-6 | CAS number: 70356-09-1
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
Owing to the extremely low solubility of butyl methoxydibenzoylmethane in water, concentration levels toxic for fish could not be reached. Therefore, the 96-h LC50 for Carp exceeded the maximum solubility of butyl methoxydibenzoylmethane in water at a loading of 100 mg/L, the regulatory limit concentration (water solubility of butyl methoxydibenzoylmethane was determined to be ca. 0.03 mg/L).
Key value for chemical safety assessment
Additional information
96-Hour Acute Toxicity Study in Carp with butyl methoxydibenzoylmethane. The study procedures described in this report were based on the EEC directive 92/69, Part C.1. “Acute toxicity for fish”; and the OECD guideline No. 203: “Fish Acute Toxicity Test”.
Butyl methoxydibenzoylmethane induced no mortality in Carp when exposed to a filtered or an unfiltered solution prepared at 100 mg/L. Due to low solubility of test item, actual concentrations could not be maintained at more than 80 % of the initial concentration. However, every possible effort was made to ensure that the maximum soluble fraction of the test item was tested and maintained. In conclusion, owing to the extremely low solubility of butyl methoxydibenzoylmethane in water, concentration levels toxic for fish could not be reached. Therefore, the 96-h LC50 for Carp exceeded the maximum solubility of butyl methoxydibenzoylmethane in water at a loading of 100 mg/L (nominal), the regulatory limit concentration. The water solubility of butyl methoxydibenzoylmethane was determined to be 0.03 mg/L.
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.
