Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
no data available: testing technically not feasible

Marine water

Hazard assessment conclusion:
no data available: testing technically not feasible

STP

Hazard assessment conclusion:
no data available: testing technically not feasible

Sediment (freshwater)

Hazard assessment conclusion:
no data available: testing technically not feasible

Sediment (marine water)

Hazard assessment conclusion:
no data available: testing technically not feasible

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
no data available: testing technically not feasible

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 PETROTOX model and the soil and sediment PNECs were calculated using the equilibrium partitioning coefficient.

Conclusion on classification

The available aquatic ecotoxicity data is presented in section 6 of IUCLID. These data result in the following classifications:

Carbon number

C6

C8

C10

C12

C14

DSD C&L

R51/53

R50/53

R50/53

Not classified

Not classified

CLP C&L

Chronic 2

Acute and chronic 1

Acute and chronic 1

Not classified

Not classified

 

At carbon numbers from C8-C10, alkenes would be classified as R50/53 under the DSD and as both Acute and Chronic Category 1 under the EU CLP Regulations. At carbon numbers above this, acute toxicity is not observed at the limits of solubility.

 

The carbon number range of alkenes C11 -12 covers this boundary. Therefore, the lower carbon number components are acutely toxic at concentrations below their solubility whilst the higher carbon number components show no acute toxicity. A UVCB that covers this carbon number range may or may not therefore express this toxicity, dependant on the proportion of the differing carbon lengths. To cover this eventuality, it is decided to adopt a precautionary attitude (in the absence of data on the specific substance) and assign the classification of 'R50/R53 very toxic to aquatic organisms and may cause long term adverse effects in the aquatic environment' under the DSD Directive and ‘Acute and Chronic Category 1’ under the EU CLP Regulations.