Registration Dossier
Registration Dossier
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EC number: 235-185-9 | CAS number: 12125-01-8
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.89 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 51 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Hazard for air
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 11 mg/kg soil dw
- Assessment factor:
- 10
- Extrapolation method:
- sensitivity distribution
Hazard for predators
Additional information
General approach to addressing the data requirements and read-across
The substance (ammonium fluoride) is solid at room temperature and pressure, therefore the large majority of the ecotoxicological studies presented were performed on an aqueous solution of the substance.
Ammonium fluoride will rapidly and extensively dissociate in the environment to form its constituent ions: ammonia and fluoride. The toxicity of the ammonia species is considered very low compared to the fluoride ion. The fluoride ion is of relatively higher toxicity and therefore it can be predicted that the effects of exposure to the substance at relevant concentrations will be due to the contribution of the fluoride ion.
Read-across to the extensive database of aquatic toxicity studies performed with other water-soluble fluoride salts (predominantly sodium fluoride) is therefore appropriate and scientifically justified for the case of ammonium fluoride. It is noted that this read-across approach was also taken for the 2001 EU Risk Assessment Report for hydrogen fluoride and potassium fluoride.
Hence, in the following section, the discussion will focus on the ecotoxicological effects of the fluoride ions in various compartments.
Conclusion on classification
Ammonium fluoride is not classified for environmental effects according to the CLP Regulation (EC) 1272/2008.
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