Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

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

Marine water

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

STP

Hazard assessment conclusion:
no hazard identified

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.04 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:
0.08 mg/kg soil dw

Hazard for predators

Secondary poisoning

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

Additional information

PNEC freshwater, marine water and intermittent release were derived based on experimental results of standard chronic freshwater species studies.

PNEC secondary poisoning was derived based on a repeated dose human health toxicity study.

PNEC air does not need to be derived as there is no method and no hazard to air (e.g. not ozone layer depleting).

PNEC sediment (freshwater and marine) were derived based on the equilibrium partitioning method.

Conclusion on classification

Ditolyl ether is neither readily nor inherently biodegradable (2 -3% degradation), the log Kow is 4.9 and the water solubility is 2.83 mg/L. The lowest toxicity for the environmental compartment is reported for alga with ErC10 = 0.02 mg/L.

Under Regulation (EC) No 1272/2008 and ECHA Guidance on the Application of the CLP Criteria (v4.0, Nov. 2013) the substance is classified as:

- Aquatic acute1 (H400)

- Aquatic chronic 1 (H410)

Under Directive (EC) No 67/548 (EEC) the substance is classified as:

- Very toxic to aquatic organism with long-lasting effects (R50/53)