Registration Dossier
Registration Dossier
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EC number: 202-503-2 | CAS number: 96-37-7
Endpoint summary
Administrative data
Description of key information
There is some data available for Methylcyclopentane. Data is also available for Hydrocarbons, C6, isoalkanes, <5% n-hexane; hexane; Hydrocarbons, C5-C7, n-alkanes, isoalkanes, n-hexane rich; and Hydrocarbons, C6, n-alkanes, isoalkanes, cyclics, n-hexane rich. This data is used for read across to Methylcyclopentane.
The aquatic toxicity was estimated using the Petrotox computer model (v. 3.04), which combines a partitioning model used to calculate the aqueous concentration of hydrocarbon components as a function of substance loading with the Target Lipid Model used to calculate acute and chronic toxicity of non-polar narcotic chemicals. Petrotox computes toxicity based on the summation of the aqueous-phase concentrations of hydrocarbon block(s) that represent a hydrocarbon substance and membrane-water partitioning coefficients (KMW) that describe the partitioning of the hydrocarbons between the water and organism.
Short-term toxicity to fish:
The estimated freshwater fish 96 hour LL50 is 18.27mg/L based on mortality, for Hydrocarbons, C6, isoalkanes, <5% n-hexane.
Short-term toxicity to aquatic invertebrates:
The calculated aquatic invertebrate 48-hour LC50 for Methylcyclopentane is 4.450 mg/L.
Toxicity to aquatic algae and cyanobacteria:
The calculated green algae 96-hour EC50 for Methylcyclopentane is 5.048 mg/L.
Toxicity to microorganisms:
The estimated protozoan,Tetrahymena pyriformis, 48-hr EL50 value for iso-hexane is 70.68 mg/L based on growth inhibition and the 48-hr NOEL is 15.81 mg/L for Hydrocarbons, C6, isoalkanes, <5% n-hexane.
Additional information
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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