Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

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

Marine water

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

STP

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

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.104 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:
0.166 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Conclusion on classification

1,2,4 triazole is harmful to aquatic organisms based on algae test giving an ErC50 -72h of 45 mg/L.

The lowest chronic data concers the toxicity to algae with a NOEC of 3.5 mg/L.

1,2,4 triazole is not ready biodegradable.

1,2,4 triazole has a calculated log Pow < 3.

Chronic toxicity data are available for two trophic levels (fish and algae) but not for daphnia. Nevertheless, no acute toxicity has been observed for daphnia according to an OECD guideline 202 at the highest concentration tested (495 mg/L). The most sensitive species is algae with an EC50 of 45 mg/L and a NOEC of 3.5 mg/L. And no chronic toxicity was observed to fish at 100 mg/L. Therefore, these information does not lead to a classification of 1,2,4 triazole for the environment according to both DSD and CLP criteria.

In addition, triazole is already listed in Annex VI of UE 1272/2008 and is not classified for the environment.