Registration Dossier
Registration Dossier
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EC number: 247-094-1 | CAS number: 25550-51-0
Endpoint summary
Administrative data
Description of key information
Additional information
Environmental distribution based on the results of the read across approach with the structural analogue 4-MHHPA as similar chemical and environmental fate properties were assumed.
Koc has been calculated using the computer program KOCWIN (v.2.00). It is predicted that the substance has a Koc of 41.94 L/kg, supporting the premise that the substance is likely to be highly mobile in soil and sediment.
The Henry's Law constant of 2.90 Pa-m3/mole indicates that the substance is not significantly volatile from surface water.
Distribution in environmental compartments has been calculated using a Fugacity model according to Mackay, Level III. Distribution in various environmental compartments is estimated as: Air - 4.79%; Water - 39.1%; Soil - 56% and Sediment - 0.088%. However, the substance is known to be unstable, rapidly hydrolysing to the corresponding di-carboxylic acid in aqueous media and this process is expected to occur in the environment should release occur. As a result the calculated distribution may not be a reasonable estimate. Similar modelling of the degradation product of the substance, 4 -methyl-1,2 -cyclohexanedicarboxylic acid, estimated distribution in the various environmental compartments as: Air - 0.0000228%; Water - 19.9%; Soil - 80% and Sediment - 0.117%. Refinement of the modelling, undertaken as part of the CSA, and taking account of the uses of the substance, does not support these estimates.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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