platinum(IV) nitrate/nitric acid solution

Ecotoxicological Summary

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:

PNEC aqua (freshwater)

PNEC value:

0.14 µg/L

Assessment factor:

50

Extrapolation method:

assessment factor

PNEC freshwater (intermittent releases):

0.205 µg/L

Marine water

Hazard assessment conclusion:

PNEC aqua (marine water)

PNEC value:

0.014 µg/L

Assessment factor:

500

Extrapolation method:

assessment factor

STP

Hazard assessment conclusion:

PNEC STP

PNEC value:

0.125 mg/L

Assessment factor:

10

Extrapolation method:

assessment factor

Sediment (freshwater)

Hazard assessment conclusion:

PNEC sediment (freshwater)

PNEC value:

0.261 mg/kg sediment dw

Extrapolation method:

equilibrium partitioning method

Sediment (marine water)

Hazard assessment conclusion:

PNEC sediment (marine water)

PNEC value:

0.026 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:

0.005 mg/kg soil dw

Extrapolation method:

equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:

no potential to cause toxic effects if accumulated (in higher organisms) via the food chain

Additional information

Ecotoxicity data are read across from other platinum(IV) substances that do not contain a chloro ligand, dihydrogen hexahydroxyplatinate and dihydrogen hexahydroxyplatinate, compound with 2-aminoethanol and this data is used to fulfil REACH endpoints and to determine environmental classification.

 

Aquatic PNECs for platinum(IV) substances are derived by pooling all available data for platinum(IV) substances and deriving the PNEC using an assessment factor approach based on the ecotoxicity data for the most toxic platinum(IV) substance as worst case. Sediment and terrestrial PNECs are derived using equilibrium partitioning.

Conclusion on classification

Environmental classification is assessed based on the lowest acute and chronic values from ecotoxicity tests. For this substance, values were read across from dihydrogen hexahydroxyplatinate and dihydrogen hexahydroxyplatinate with 2-aminoethanol. For classification purposes, these values have been expressed as concentrations of platinum dinitrate, converted based on molecular weight. The lowest acute value is a 48-hour EC50 of 0.481 mg Pt L^-1for aquatic invertebrates(mobility) and the lowest chronic value is a 72-hour NOEC of 0.613 mg Pt L^-1 (yield and growth rate) based on an algal toxicity study. This results in an EC50 of 0.787 mg platinum dinitrate L^-1 and a NOEC of 1.00 mg platinum dinitrate L^{- 1}. Based on these results, an environmental classification of Acute Category 1, Chronic Category 1 is assigned to this substance. As the lowest EC50 value is >0.1 ≤ 1 an acute M factor of 1 is assigned. A chronic M factor of 1 is also assigned, to match the acute M factor, as the classification has been determined based on acute data.