Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

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

Marine water

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

STP

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

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
310 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:
61.8 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential to cause toxic effects if accumulated (in higher organisms) via the food chain

Additional information

PNECs considering the reference substance were deduced from the water solubility for each compartment/endpoint as it represents a worst-case scenario.

Conclusion on classification

According to the aquatic toxicity data no hazard was detected for all three trophic levels as well as for microorganisms. But as Poly-1,4-Diisopropylbenzene is highly insoluble in water, has a log Pow greater than 6 and is not readily biodegradable it needs to be classified as aquatic chronic cat. 4 (H413: May cause long lasting harmful effects to aquatic life) according to Regulation (EC) No 1272/2008 and as R53 (May cause long-term adverse effects in the aquatic environment) according to Directive 67/548/EC.