Registration Dossier

Administrative data

Hazard for aquatic organisms


Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.26 mg/L
Assessment factor:
1 000
Extrapolation method:
assessment factor

Hazard for air

Hazard for terrestrial organisms

Hazard for predators

Additional information

PNEC values were derived according to information provided in the ECHA guidance document on information requirements and chemical safety assessment (Chapter R10). The PNEC value was derived using assessment factors. Short-term results for three trophic levels (fish, invertebrates and algae) are available. Long-term results are only available for algae, however these cannot be used unsupported by other long-term information on other species.


No acute toxicity was observed in fish (Danio rerio) or invertebrates (Daphnia magna) up to concentrations of 500 mg/L test substance (nominal concentrations). The most sensitive species were algae for which an ErC50 (72h) > 256 mg/L (measured concentration) and a NOEC (72h) of 25 mg/L (measured concentrations) could be determined.


As short-term results are available for the three trophic levels and only long-term results for algae are available, an assessment factor of 1000 should be applied on the lowest acute toxicity result. 


PNEC aquatic: The algae ErC50 (72h) > 256 mg/L was used as start value for the PNEC calculation using an assessment factor of 1000 (AF) = 256 mg/L / 1000 = 0.26 mg/L

Conclusion on classification