Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
no data: aquatic toxicity unlikely

Marine water

Hazard assessment conclusion:
no data: aquatic toxicity unlikely

STP

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

Sediment (freshwater)

Hazard assessment conclusion:
PNEC sediment (freshwater)
PNEC value:
110 µg/kg sediment dw
Assessment factor:
1 000
Extrapolation method:
assessment factor

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
110 µg/kg sediment dw
Assessment factor:
1 000
Extrapolation method:
assessment factor

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
1 mg/kg soil dw
Assessment factor:
100
Extrapolation method:
assessment factor

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
PNEC oral
PNEC value:
11.1 mg/kg food
Assessment factor:
90

Additional information

Dibenzyltoluene shows a very low solubility in water (ca. 20 µg/L). No acute toxicity is observed up to the solubility limit (slightly different from a test to another depending on experimental conditions and medium composition). Therefore no PNECaqua could be derived from these data. A PNECsediment is proposed, based on an acute toxicity on a marine reworker, as a worst case. A PNECsoil is derived from studies on terrestrial organisms, even if from information available on uses no exposure of soil compartment is expected.

Given information available on production and uses, where emissions to water and other compartments ar unlikely, no additional testing is proposed, waiving of annexes IX and X environmental endpoints is proposed due to lack of exposure.

Conclusion on classification

No toxicity related classification is proposed due to lack of observed effects in acute tests. However, given the logKow > 6 and a lack ready biodegradability, according to DSD criteria a R53 risk phrase has to be applied. According to CLP criteria, the substance is classified as "Chronic category 4".