Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

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

Marine water

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

STP

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

Sediment (freshwater)

Hazard assessment conclusion:
insufficient hazard data available (further information necessary)

Sediment (marine water)

Hazard assessment conclusion:
insufficient hazard data available (further information necessary)

Hazard for air

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
insufficient hazard data available (further information necessary)

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

PNEC aqua (freshwater)

For the 3 trophic levels (fish, invertebrates (Daphnia) and algae), several studies on the short-term toxicity are available. Therefore the lowest L(E)C50 fixed value observed from all conducted studies, a 96h-LC50 of 1700 mg/L for fish (carp family) with diammonium hydrogenorthophosphate, is used for the derivation of the PNEC. An AF of 1000 is used in accordance with the “Guidance on information requirements and chemical safety assessment, Chapter R.10”.

PNEC aqua (freshwater): 1.7 mg/L

 

PNEC aqua (marine water)

For the 3 trophic levels (fish, invertebrates (Daphnia) and algae), several studies on the short-term toxicity are available. No studies with species in marine water are available, therefore the lowest L(E)C50 fixed value observed from all conducted studies, a 96h-LC50 of 1700 mg/L for fish (carp family) with diammonium hydrogenorthophosphate, is used for the derivation of the PNEC. An AF of 10000 is then used in accordance with the “Guidance on information requirements and chemical safety assessment, Chapter R.10”.

PNEC aqua (marine water): 0.17 mg/L

PNEC (intermittent releases)

For the 3 trophic levels (fish, invertebrates (Daphnia) and algae), several studies on the short-term toxicity are available. Therefore the lowest L(E)C50 fixed value observed from all conducted studies, a 96h-LC50 of 1700 mg/L for fish (carp family) with diammonium hydrogenorthophosphate, is used for the derivation of the PNEC. An AF of 100 is used in accordance with the “Guidance on information requirements and chemical safety assessment, Chapter R.10”.

PNEC (intermittent releases): 17.0 mg/L

 

PNEC STP

The substance is inorganic, therefore no ready biodegradability test is available. A study on toxicity to micro-organisms is available showing no respiratory inhibition at 100 mg/L (NOEC). An AF of 10 is used in accordance with the “Guidance on information requirements and chemical safety assessment, Chapter R.10”.

PNEC STP: 10 mg/L

 

Conclusion on classification

As single superphosphate is an inorganic substance, no PBT assessment has to be performed in accordance with Annex XIII. In addition, based on the results of the available studies, both with single superphosphate itself as well as with other inorganic phosphates, the substance does not need to be classified according to Directive 67/548/EC or the CLP Regulation with regard to the environment.