Registration Dossier

Administrative data

Hazard for aquatic organisms

Hazard for air

Hazard for terrestrial organisms

Hazard for predators

Additional information

The hydrocarbon block method has been used for environmental risk assessment (see REACH guidance, R7, app.13-1). Aquatic PNECs for hydrocarbon blocks have been derived using the HC5 statistical extrapolation method and the target lipid model using representative structures. See Product Library tab in PETRORISK spreadsheet attached to IUCLID Section 13. Given the large database of freshwater organisms included in the target lipid model, an assessment factor of one has been applied to the HC5.

Conclusion on classification

The ecotoxicological data available indicate that n-pentane, 2 -methylbutane and hydrocarbons C5 can be classified as chronic category 2 with the hazard statement "toxic to aquatic organisms; may cause long term adverse effects in the aquatic environment" and cyclopentane can be classified as chronic category 3 with the hazard statement "harmful to aquatic organisms; may cause long term adverse effects in the aquatic environment". These classifications have been agreed by the consortium to represent the respective substances.