Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
1 µg/L
Assessment factor:
50
Extrapolation method:
assessment factor

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.1 µg/L
Assessment factor:
10 000
Extrapolation method:
assessment factor

STP

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

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
23.7 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:
47.3 µg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
PNEC oral
PNEC value:
24.8 mg/kg food
Assessment factor:
300

Additional information

The PNEC values were determined for the substance itself by application of methods provided in ECHA Guidance Chapter R.10 (May 2008).

Conclusion on classification

The substance is an organic substance. It is low soluble in water (ca. 3.7 mg/L according to standard methods) and stable to hydrolysis.

The following toxicity values are available for the substance:

Fish Acute: 96h-LC50 = 0.32 mg/L (predicted acute aquatic toxicity data)

Aquatic invertebrates: 48h-EC50 = 0.8 mg/L (based on geom. mean meas.)

Algae: 72h-ErC50 = 0.45 mg/L

Fish chronic: 32d-EC10 = 0.058 mg/L

Daphnia chronic: 21d-EC10 = 0.050 mg/l

The lowest acute aquatic toxicity values based on available data ranges between 0.1 and 1.0 mg/L.

The substance was found readily biodegradable in OECD TG 301. Therefore, the substance is considered as rapidly degradable in aquatic system.

Information on bioaccumulation potential of the submission substance: No fish BCF is available. An experimental data on log Kow is available (4.38).

CLP Classification proposal

Acute aquatic hazard: Category 1. M-Factor: 1. Reasoning: lowest E(L) C50 between 0.1 and 1.0 mg/L.

Chronic aquatic hazard: Category 2. Reasoning: adequate chronic toxicity data available for two trophic levels, lowest EC10 value range between 0.1 and 1.0 mg/L, rapidly degradable substance with Log Kow > 4.