Registration Dossier

Diss Factsheets

Administrative data

Hazard for aquatic organisms

Hazard for air

Hazard for terrestrial organisms

Hazard for predators

Additional information

The registration substance is a transported isolated intermediate and will therefore be used under strictly controlled conditions in line with article 18, 4.(b) of the REACH regulation EC1907/2006 which states "procedural and control technologies shall be used that minimise emission and any resulting exposure", and therefore no exposure to the environment is expected. A CSR is not needed for this substance and therefore PNEC values have not been calculated.

Conclusion on classification

Classification and labelling has been based upon the key information for the ecotoxicity endpoints. The results of these studies are as follows:

96 h LC50 (for fish) = > 0.52 mg/L. (Migchielsen, 2004)

24 h EC50 (for daphnia) = < 0.13 mg/L. (Ciba-Geigy, 1988)

72 h EC50 (for algae) = > 0.43 mg/L. (Ciba-Geigy, 1988)

It should also be considered that the substance does not meet the definition of a readily biodegradable substance (Hanstveit, 2003).

The lowest result is the 24 h EC50 daphnia result presented by Ciba-Geigy, 1988 of < 0.13 mg/L is suitable for classification and labelling and this meets the criteria under Directive 67/548/EEC and EC Regulation 1272/2008 as follows:

Directive 67/548/EEC:

R50 and R53: Very toxic to aquatic organisms and May cause long-term adverse effects to the aquatic environment.

EC Regulation 1272/2008:

Hazardous to the aquatic environment, Acute: Category 1. Chronic: Category 1

M factor = 1 (selected on the assumption that the EC50 is approximately 0.13 mg/L)