Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
10 mg/L
Assessment factor:
10
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
1 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
1 mg/L
Assessment factor:
100
Extrapolation method:
assessment factor

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
1 mg/L
Assessment factor:
100
Extrapolation method:
assessment factor

Sediment (freshwater)

Hazard assessment conclusion:
PNEC sediment (freshwater)
PNEC value:
377 mg/kg sediment dw
Extrapolation method:
equilibrium partitioning method

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
37.7 mg/kg sediment dw
Extrapolation method:
equilibrium partitioning method

Hazard for air

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
1 mg/kg soil dw
Assessment factor:
1 000
Extrapolation method:
assessment factor

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Conclusion on classification

The acute toxicities of 3 representative aquatic species of PR254 are tested andthe LC50/EC50s are well above 100 mg/L. Poorly soluble substances ( the water solubility of PR254 is below 0.003 mg/L) for which no acute toxicity is recorded at levels up to the water solubility, and which are not rapidly degradable and have an experimentally determined BCF≥500(or, if absent, a LogKow≥4), indicating a potential to bioaccumulate, will be classified in Chronic Category 4 unless other scientific evidence exists showing classification to be unnecessary. But PR254 has a low Logkow of 3. Therefore, PR254 is of low ecotoxicity and is not a PBT or vPvB substance.

According to Directive 67/548/EEC and Regulation 1272/2008/EC, there are no indications for a classification of PR254, based on ecotoxicity and/or fate and behaviour in the environment.