Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
1.3 mg/L
Assessment factor:
10
Extrapolation method:
assessment factor

STP

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

Hazard for air

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
22 mg/kg soil dw
Assessment factor:
10
Extrapolation method:
sensitivity distribution

Hazard for predators

Additional information

AMBI will not exist in the environment per se, as it will rapidly dissociate to form ammonium and fluoride ions. Based on a comparison of the ecotoxicity data summarised in this dossier, it is clear that the environmental risk assessment will be driven by the effects of the fluoride ion rather than ammonium ion. Although high toxicity to fish is reported for free ammonia (NH3), only a very small proportion of the ammonium formed from AMBI will be present in this (unionised) form and the large majority will be present as ionised ammonium (NH4 +). PNEC values for total ammonia (i.e. NH3 and NH4 +) are higher than those for fluoride. It is therefore appropriate to derive PNEC values based on fluoride. With the exception of the effects of free ammonia on fish, ammonium/ammonium is of low toxicity and is used as a N-source by plants and microorganisms.

Conclusion on classification