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Hazard for aquatic organisms

Hazard for air

Hazard for terrestrial organisms

Hazard for predators

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Conclusion on classification

Environmental classification and labelling of a substance is generally based on data from short-term aquatic toxicity results, the ready biodegradability of the substance and an experimentally determined BCF (or if absent the measured octanol/water partition coefficient). Available adequate chronic toxicity data is also relevant for the assessment of long-term aquatic hazards (Regulation 286/2011/EC).

 

Short-term aquatic toxicity data is available for two trophic levels. A daphnia study is available for linalyl propionate and an algal inhibition study for the closely related structural analogue, linalyl isobutyrate. The lowest short-term L(E)C50 is for algae: the 72-hour ErC50 is 2.0 mg/l. Since the EC50 is > 1mg/L the substance is not classified for short-term hazards to the aquatic environment according to the CLP Regulation 1272/2008/EC.

 

Chronic aquatic toxicity data is only available for one trophic level (algae). Therefore, the long-term hazard has been assessed based on both:

a) The chronic aquatic toxicity data for algae (72 hr ErC10 = 0.77 mg/l), which for a rapidly degradable substance results in a Chronic 3 classification, and

b) The acute aquatic toxicity data for daphnia (EC50 = 2.8 mg/L) and environmental fate data (readily biodegradable and log Kow of 4.9), which results in a Category Chronic 2 classification,

and classifying according to the most stringent outcome.

 

Thus it is concluded that the substance is classified Aquatic Chronic 2 (H411) according to the CLP Regulation 1272/2008/EC & adaptation 286/2011/EC.

 

Under the old DSD regulation the substance would be classified as R51/53 (toxic to aquatic organisms and may cause long-term adverse effects in the aquatic environment).