Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
0.56 mg/L
Assessment factor:
10
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
2.37 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.056 mg/L
Assessment factor:
100
Extrapolation method:
assessment factor

STP

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

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.236 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:
4.7 µg/kg soil dw
Assessment factor:
1 000
Extrapolation method:
assessment factor

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Potassium trifluoroacetate (TFAK) is very soluble in water. In the environment, it is ionized into the trifluoroacetate anion and the K cation. As potassium is not toxic to the organisms, the toxicity effect of TFAK should be the activity of the trifluoroacetate moiety. Therefore, the PNEC values determined for the trifluoroacetic acid (TFA, CAS RN: 76-05-1, REACH dossier submitted by the same registrant) are used for potassium trifluoroacetate. (See the endpoint study summary "Aquatic toxicity" for the read-across justification).

Conclusion on classification

For potassium trifluoroacetate reliable short-term toxicity data are available for three trophic levels. Based on the results, it was not possible to determine short-term E/LC50 values because they are above the highest tested concentrations: algae (growth rate 72hEC50 > 100 mg/L), daphnia (48hEC50 > 100 mg/L) and fish (96hLC50 > 1200 mg/L). In accordance with Regulation (EC) No 1272/2008, Table 4.1.0 (a), classification for acute aquatic hazard is not required for potassium trifluoroacetate as all EC50/LC50 values are above the classification criterion of 1 mg/L.


Additionally, potassium trifluoroacetate is not readily biodegradable and has a low potential for bioaccumulation (Log Kow < 1).


Long-term toxicity data are available for three trophic levels and the results show critical effect values of  ≥ 4.7 mg/L (35d NOEC, Fish), ≥ 100 mg/L (21d NOEC, Daphnia) and ≥ 5.6 mg/L (72h EC10, Algae). In accordance with Regulation (EC) No 1272/2008, Table 4.1.0 (b) (i), potassium trifluoroacetate is not classified for long lasting effects to the aquatic environment since the lowest chronic NOEC value exceeds the classification criterion of 1.0 mg/L