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Ecotoxicological Summary

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Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.088 mg/L
Assessment factor:
1 000
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
0.88 mg/L

Marine water

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

STP

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

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.05 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:
0.049 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

Environmental fate and pathways

Biodegradation: Not readily biodegradable (9% in 28 d, OECD 301 B)

Bioaccumulation: No potential for bioaccumulation; log Pow = 1.43 (22 °C, pH 7, OECD 117)

 

Aquatic short-term toxicity

Fish: LC50 (96 h) > 100 mg/L (nominal, OECD 203, O. mykiss)

Aquatic invertebrates: EC50 (48 h) > 100 mg/L (nominal, OECD 202, D. magna)

Algae: ErC50 (72 h) = 88 mg/L (nominal, OECD 201, P. subcapitata)

 

Aquatic long-term toxicity

Fish: no data available

Aquatic invertebrates: no data available

Algae: NOErC (72 h) = 32 mg/L (nominal, OECD 201, P. subcapitata)

Conclusion on CLP

2-Pentanone oxime (CAS 623-40-5) is not rapidly biodegradable, the substance has a low potential for bioaccumulation (log Pow: 1.43). The lowest acute aquatic toxicity ErC50 (72 h) is 88 mg/L (NOErC (72 h): 32 mg/L). Based on the determined acute effect concentration of ErC50 (72 h): 88 mg/L and the lack of rapid degradability the substance needs to be classified aquatic chronic 3 according to the consolidated version of Regulation (EC) No 1272/2008 and further amendments (ATPs).