Registration Dossier

Administrative data

Hazard for aquatic organisms

Hazard for air

Hazard for terrestrial organisms

Hazard for predators

Additional information

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 all three trophic levels (experimental data for algae and fish; a reliable QSAR for daphnia). The lowest short-term L(E)C50 is for daphnia with a predicted 48-hour EC50 value of 1.4-3.4 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 (NOEC = 1.2 mg/L, 72 hr EC10 = 1.9 mg/l, based on growth rate), which results in no chronic classification because the Chronic NOEC or EC10 is > 1mg/L, and

b) The acute aquatic toxicity data for the other two trophic levels (daphnia 48h EC50 = 1.4-3.4 mg/L, fish 96h LC50 = 4.1 mg/L) and environmental fate data (readily biodegradable and log Kow of 3.6), which also results in no chronic classification because the substance is readily biodegradable and has a log Kow < 4.  

Thus it is concluded that the substance is not classified for the environmental 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 because the log Kow is > 3.