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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 203-624-3 | CAS number: 108-87-2
Long-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
In accordance to Regulation (EC) No. 1907/2006, Annex IX, Column 2, 9. 1, as the RCR freshwater is < 1 no further effects of methylcyclohexane on aquatic organisms need to be investigated and a long-term test with fish is therefore not required
Key value for chemical safety assessment
Additional information
In accordance with Regulation (EC) No 1907/2006, Column 2 of Annex IX, section 9.1.6 long-term toxicity tests on fish does not need to be investigated if the outcome of the chemical safety assessment shows no indication of risk on aquatic organisms from exposure to the substance in question. Aquatic PNECs for methylcylcohexane have been derived using assessment factors. The risk characterization ratio (RCR) has demonstrated that there is no indication of risk i.e. PEC/PNEC freshwater < 1 from current exposure conditions to methylcyclohexane.
Furthermore, considering the high volatility and ready biodegradation, the substance is expected to be rapidly removed from the water column. Therefore chronic exposure of aquatic organisms is unlikely to occur. Nevertheless, available data on algae indicate that a chronic toxicity of methylcyclohexane exists with a NOErC beeing ≤ 0,1 mg/L, resulting in chronic classification (CLP: chronic 1). It is not expected, that further testing on fish would result in a more stringent classification for methylcylohexane, since fish show higher ecotoxicity values than algae and aquatic invertebrates in acute tests.
In conclusion, in accordance to Regulation (EC) No. 1907/2006, Annex IX, Column 2, 9. 1, as the RCR freshwater is < 1 no further effects of methylcyclohexane on aquatic organisms need to be investigated and a long-term test with fish is therefore not required.
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.
