Registration Dossier
Registration Dossier
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EC number: 203-624-3 | CAS number: 108-87-2
Long-term toxicity to aquatic invertebrates
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 aquatic invertebrates 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 9.1.5 long-term toxicity tests on aquatic invertebrates 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, 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 aquatic invertebrates would result in a more stringent classification for methylcyclohexane.
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 aquatic invertebrates 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.
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