Aluminium vanadium tetraoxide

Ecotoxicological Summary

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:

PNEC aqua (freshwater)

PNEC value:

21.7 µg/L

Assessment factor:

10

Extrapolation method:

assessment factor

PNEC freshwater (intermittent releases):

23.1 µg/L

Marine water

Hazard assessment conclusion:

PNEC aqua (marine water)

PNEC value:

7.1 µg/L

Assessment factor:

10

STP

Hazard assessment conclusion:

PNEC STP

PNEC value:

1 285.7 µg/L

Assessment factor:

10

Extrapolation method:

assessment factor

Sediment (freshwater)

Hazard assessment conclusion:

PNEC sediment (freshwater)

PNEC value:

685.7 mg/kg sediment dw

Extrapolation method:

equilibrium partitioning method

Sediment (marine water)

Hazard assessment conclusion:

PNEC sediment (marine water)

PNEC value:

225.7 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:

20.6 mg/kg soil dw

Assessment factor:

3

Extrapolation method:

sensitivity distribution

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:

PNEC oral

PNEC value:

0.477 mg/kg food

Assessment factor:

30

Additional information

In the assessment of environmental fate and toxicity of aluminium vanadium tetraoxide, read-across to the assessment entities „vanadium ions“ and „aluminium ions“ is applied since the ions of aluminium vanadium tetraoxide determine the environmental fate and toxicity of aluminium vanadium tetraoxide. Since vanadium and aluminium ions behave differently in the environment, a separate assessment of the environmental fate and toxicity of each assessment entity is performed. Please refer to the data as submitted for each individual assessment entity. For a documentation and justification of that approach, please refer to the separate document attached to section 13, namely "Read Across Assessment Report for aluminium vanadium tetraoxide".

Conclusion on classification

Aluminium vanadium tetraoxide is soluble. The results from a standard water solubility test according to OECD 105 indicate that at a loading of 100 mg/L, the dissolution of aluminium vanadium tetraoxide after 37 days results in concentrations of 377 ± 34 µg Al/L and 3605 ± 164.2 µg V/L. The acute and chronic ecotoxicity reference values of 0.693 and 0.120 mg V/L are based on dissolved elemental vanadium concentrations. Thus, the dissolved vanadium concentration of aluminum vanadium tetraoxide after37 days in water is above the acute and chronic reference values for dissolved elemental vanadium. Soluble aluminium salts are not classified; therefore less soluble forms of aluminium are less hazardous and also not classified.

Aluminium vanadium tetraoxide does not meet based on i) the acute aquatic ecotoxicity value of 0.693 mg V/L; ii) the maximum vanadium content of aluminium vanadium tetraoxide of 35 %, and iii) the resulting acute ecotoxicity reference value of 1.98 mg/L alumnium vanadium tetraoxide classification criteria of acute (short-term) aquatic hazard Category 1 of Regulation (EC) No 1272/2008.

Based on the chronic aquatic ecotoxicity value of 0.120 mg V/L; ii) the maximum vanadium content of aluminium vanadium tetraoxide of 35 %, and iii) the resulting chronic ecotoxicity reference value for aluminium vanadium tetraoxide of 0.343 mg/L, aluminium vanadium tetraoxide meets in accordance with Table 4.1.0 (b) (i) of Regulation (EC) No 1272/2008 criteria of Category 2 for long-term aquatic hazard.