Registration Dossier

Diss Factsheets

Administrative data

Hazard for aquatic organisms

Freshwater

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

Marine water

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

STP

Hazard assessment conclusion:
no data: aquatic toxicity unlikely

Sediment (freshwater)

Hazard assessment conclusion:
no hazard identified

Sediment (marine water)

Hazard assessment conclusion:
no hazard identified

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

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

The substance is an inorganic and will not follow the commonly used rules for accumulation into lipids. Toxicity is observed only for plants, where it may interfere with the uptake of nutrients (phosphate); yet at the same time it may be transformed into the same nutrient. As the uptake by plants takes place merely through the water phase, it is considered that the safety limits set by PNECaqua will provide sufficient protection.

Conclusion on classification

The lowest EC50 value in short term testing is >100 mg/L. The substance is inorganic and biodegradation and Kow are not relevant. According to the Directive 67/548/EC the substance is not classified.

The lowest EC50 value in short term testing is >100 mg/L. The only available NOEC(algae) equals 1 mg/l. According to Regulation 1272/2008/EC the substance does not classify for the Categories Acute 1 neither for Category Chronic 3.

Based on these available ecotoxicity data, phosphonic acid (phosphorous acid flake) is not classified as hazardous to the environment according to Directive 67/548/EEC and Regulation 1272/2008/EC.