Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.008 mg/L
Assessment factor:
50
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
0.042 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.001 mg/L
Assessment factor:
500
Extrapolation method:
assessment factor

STP

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

Sediment (freshwater)

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

Sediment (marine water)

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

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
0.015 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

The PNEC for waste-water treatement is 10 mg/L based on the EC10 value obtained in a pseudomonas multiplication test and an assesment factor of 1.

PNECs for aqueous environment were derived by the assessment method based on chronic aquatic toxicity data. PNECs for sediment and soil were derived therefrom by applying the partitioning method.

The substance has a low potential for bioaccumulation and this hazards for predators via the food chain are not anticipated.

Conclusion on classification

The substance does need to be classified for environmental hazards.

A NOEC value of 0.42 mg/L was obtained in a long term toxicity study to aquatic invertebrate for the p-isomer.

The lowest aquatic acute toxicity being between 1 and 10 mg/L for both substances and as they are considered not to be rapidly degradable, an Aquatic chronic 2 classification under CLP regulation is justified.