Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
no hazard identified

Marine water

Hazard assessment conclusion:
no hazard identified

STP

Hazard assessment conclusion:
no hazard identified

Sediment (freshwater)

Hazard assessment conclusion:
no hazard identified

Sediment (marine water)

Hazard assessment conclusion:
no hazard identified

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
no hazard identified

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential to cause toxic effects if accumulated (in higher organisms) via the food chain

Additional information

Aquatic PNECs were derived using the equation that underlies the PETROTOX model. As the aquatic PNEC are greater than the water solubility of the test substance toxicity is not expected and so soil and sediment PNECs are not calculated.

Conclusion on classification

All the ecotoxicity data for C20-24 alpha olefin is expressed in terms of loading rate rather than exposure concentrations. This data is not suitable for comparison with the classification criteria. Poorly water soluble substances may require a precautionary classification of R53 'May cause long term adverse effects in the aquatic environment' under the DSD and Chronic Category 4 under the CLP Regulations. However, this is not required for C20-24 alpha olefins as they are readily biodegradable.