Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

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

Marine water

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

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
3 mg/L
Assessment factor:
100
Extrapolation method:
assessment factor

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
98 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:
196 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

Environmental Hazards

The reaction mass of aminophosphonium salt and bisphenol AF (XA31) has been tested for its toxicity to aquatic organisms. Acute E(L)C50 values were measured in the range >1-10 mg/L (fish, daphnids, algae) while a chronic NOEC value was measured at 1 mg/L (algae). Considering the fate properties of the reaction mass (not readily biodegradable, low Kow < 3), this would lead to a classification as Aquatic Chronic 2, H411 according to the CLP classification criteria for environmental hazards (Aquatic Acute 2, H401 + Aquatic Chronic 2, H411 according to the UN-GHS classification criteria for environmental hazards).

Aquatic toxicity data have been reported for the two main constituents of the reaction mass, i.e. the aminophosphonium salt and bisphenol AF (cf. REACH disseminated dossiers). Both constituents exhibit aquatic toxicity data very similar to the ones measured on the reaction mass, except for the chronic toxicity data on algae. For this endpoint, a 72h-NOEC value of 0.052 mg/L has been reported for bisphenol AF, which is significantly lower than the 72h-NOEC value of 1 mg/L reported for the reaction mass.Considering the analytical deficiencies of the algal toxicity study performed on the reaction mass, it is found preferable to use for the assessment, as a worst-case, the 72h-NOEC value reported for bisphenol AF. This worst-case approach is all-the-more relevant as the aquatic (chronic) toxicity of the reaction mass is not expected to be driven by the aminophosphonium salt.

The application of the above-described worst-case approach leads to a conservative classification of the reaction mass as Aquatic Chronic 1, H410 (M-factor = 1) according to the CLP classification criteria for environmental hazards (Aquatic Acute 2, H401 + Aquatic Chronic 1, H410 according to the UN-GHS classification criteria for environmental hazards).

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