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: 2024-10-31 13:32:20

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.