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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 243-473-0 | CAS number: 20030-30-2
Endpoint summary
Administrative data
Description of key information
Acute Toxicity
- oral: LD50 = 1866 mg/kg bw (rat)
- inhalative: LC50 = 20.55 mg/l (8h, rat)
- ip: LD50 = 243 mg/kg bw (mouse)
Key value for chemical safety assessment
Acute toxicity: via oral route
Endpoint conclusion
- Dose descriptor:
- LD50
- Value:
- 1 866 mg/kg bw
Additional information
In a study, which was in large part equivalent to the methods described in OECD Guideline 401, the LD50 for rats was estimated to be 1866 mg/kg body weight (BASF AG, 1969). During this study, the inhalative acute toxicity was also evaluated, by exposing rats to a vapor generated by 20°C for 8h and to vapor generated by 100°C for 3 and 8 h. The resulting values for lethality were a LC0 of 3.58 mg/l, LC0 of 26.23 and a LC50 of 20.55 mg/l, respectively (BASF AG, 1969). Intraperitoneal injection of mice led to LD50 values of 243 mg/kg body weight (BASF AG, 1969).
Justification for classification or non-classification
Due to the estimated LD50 of 1866 mg/kg bw 2,5,6 -Trimethyl-2 -cyclohexen-1 -on has to be classified harmful.
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.
