Potassium trifluoroacetate
Synonym(s):Trifluoroacetic acid potassium salt
- CAS NO.：2923-16-2
- Empirical Formula: C2F3KO2
- Molecular Weight: 152.11
- MDL number: MFCD00013215
- EINECS: 220-877-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:18:01
What is Potassium trifluoroacetate?
Chemical properties
white crystalline powder
The Uses of Potassium trifluoroacetate
It is a reagent for preparation of aryl trifluoromethyl sulfides, by heating with the diaryl disulfide.
Flammability and Explosibility
Non flammable
Purification Methods
To purify it, dissolve the salt in trifluoroacetic acid with ca 2% of trifluoroacetic anhydride, filter it and evaporate it carefully to dryness (avoid over heating), and finally dry it in a vacuum at 100o. It can be recrystallised from trifluoroacetic acid (solubility in the acid is ca 50.1%). [Simons & Lorentzen J Am Chem Soc 74 4746 1952, Hara & Cady J Am Chem Soc 76 4285 1954, Watt & Muga J Inorg Nucl Chem 9 166 1959, Beilstein 2 IV 458.]
Properties of Potassium trifluoroacetate
| Melting point: | 140-142 °C (lit.) |
| Density | 1.49 g/mL (lit.) |
| vapor pressure | 0Pa at 25℃ |
| storage temp. | Keep in dark place,Inert atmosphere,Room temperature |
| solubility | H2O: 0.1 g/mL, clear, colorless |
| form | solid |
| Specific Gravity | 1.49 |
| color | White to Pale Yellow |
| Water Solubility | Soluble in water. |
| Hydrolytic Sensitivity | 0: forms stable aqueous solutions |
| Sensitive | Hygroscopic |
| BRN | 3717603 |
| Stability: | Very Hygroscopic |
| CAS DataBase Reference | 2923-16-2(CAS DataBase Reference) |
| EPA Substance Registry System | Acetic acid, 2,2,2-trifluoro-, potassium salt (1:1) (2923-16-2) |
Safety information for Potassium trifluoroacetate
| Signal word | Danger |
| Pictogram(s) |
 Skull and Crossbones Acute Toxicity GHS06  Environment GHS09 |
| GHS Hazard Statements |
H412:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P273:Avoid release to the environment. |
Computed Descriptors for Potassium trifluoroacetate
| InChIKey | CUNPJFGIODEJLQ-UHFFFAOYSA-M |
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