Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.426 µg/L
Assessment factor:
10
Extrapolation method:
assessment factor

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.043 µg/L
Assessment factor:
100
Extrapolation method:
assessment factor

STP

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

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
8.865 µg/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:
17.42 µg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

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

Additional information

Conclusion on classification

The most sensitive species for acute aquatic toxicity is fish, and an LC50 of 0.0349 mg/L was found (EC50 daphnia was 0.47 mg/L and for algae was > 1.36 mg/L). Based on these data, the substance is subject to classification as Acute Aquatic Category 1, H400 with an M-factor of 10, according to CLP (Regulation EC No. 1272/2008). Furthermore, chronic toxicity data are available for algae, fish, and daphnia and the lowest NOAEC found is for daphnia reproduction (4.26 µg/L), which in combination with the fact that the substance is not readily biodegradable results in an Aquatic Chronic Category 1 classification, H410 with an M-factor of 10 according to CLP.

According to RAC Decision adopted on 16 September 2016, based on the lowest acute toxicity observed in a study not available at Endura, Tetramethrin is classified as: Aquatic Acute 1 (H400) with an acute M-factor of 100, Aquatic Chronic 1 (H410) with a chronic M-factor of 100.

Although d-Tetramethrin (CAS nr.548460-64-6) is not specifically discussed in the RAC Decision adopted on 16 September 2016, it is considered appropriate reading-across the same M-factors to d-Tetramethrin.