Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.034 mg/L
Assessment factor:
50
PNEC freshwater (intermittent releases):
0.106 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.003 mg/L
Assessment factor:
10

STP

Hazard assessment conclusion:
no emission to STP expected

Sediment (freshwater)

Hazard assessment conclusion:
PNEC sediment (freshwater)
PNEC value:
1.75 mg/kg sediment dw

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.175 mg/kg sediment dw

Hazard for air

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
0.215 mg/kg soil dw

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

The lowest effect concentration for the test substance is the NOEC of 1.72 mg/L for daphnids based on reproduction during a 21-day reproduction study.  Since a full base set of acute aquatic test data is available, as well as the 21-day NOEC for reproduction of Daphnia magna and a 72-hour NOEC for growth rate of Pseudokirchneriella subcapitata, an assessment factor of 50 is appropriate for calculation of a PNEC aqua-freshwater. The Predicted No Effect Concentration for surface water is PNECwater= 0.0344 mg/L.

The test substance is a highly volatile compound that is not expected to bind to soil and emission to soil is unlikely during use.

Based on the physicochemical properties of the test substance and no expected emissions to sewage treatment plants, it was not considered useful to derive a PNECSTP.

Based on a log Kow < 3.0, limited potential for exposure and bioaccumulation and lack of classification for toxicological effects in mammals, it was not considered useful to derive a PNECoral.

Conclusion on classification

Although the substance is currently listed in Annex VI, the results of an invertebrate chronic life-cycle test with Daphnia magna conducted since the original classification was proposed, in conjunction with existing data, indicate that the substance does not pose a hazard to the aquatic environment. Based on these new test results, the substance would not be classified for the environment with regard to abiotic hazard or adverse effects in the aquatic environment according to 67/548/EEC self classification or CLP regulations.