Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.2 µg/L
Assessment factor:
1 000
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
2 µg/L

Marine water

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

STP

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

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
3.64 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:
4.36 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

Yttrium trinitrate is not considered to be biodegradable due to its inorganic nature. Furthermore, the substance is not considered to be bioaccumulative based on bibliographic data on fish, the preferred REACH-species to assess bioaccumulation potential. Short-term toxicity tests showed that the substance is very toxic to fish and toxic to aquatic invertebrates. The lowest acute EC50 or LC50 is the 96-h LC50 of 0.20 mg Y/L (equivalent to 0.62 mg Y(NO3)3/L), obtained in an acute fish study performed by Muckle (2016). Taking into consideration the acute test results together with environmental fate data and in accordance with the criteria for classification as defined in Annex I, Regulation (EC) No. 1272/2008, the test material is classified as follows:

Aquatic acute 1 (H400) - M-factor 1

Aquatic chronic 1 (H410) - M-factor 1