
Potassium Fluoride is an inorganic compound composed of potassium and fluoride ions. It has the chemical formula KF and belongs to the alkali halide group. The compound generally appears as a white crystalline solid or powder and is highly soluble in water. It also occurs naturally in small amounts as the rare mineral carobbiite. Potassium fluoride is an important source of fluoride ions for chemical and industrial processes. Fluoride can function as a nucleophile or support specific transformations in chemical reactions. Aqueous solutions of potassium fluoride also react with silica to form soluble fluorosilicates which explains their ability to etch glass. Its high solubility and availability of fluoride-ion make it a valuable reagent in chemical synthesis, manufacturing and materials research.

CAS No.: 7789-23-3
Synonyms: Potassium fluoride (KF), potassium fluorure, Fluorure de potassium.
| Physical Properties | |
| Chemical formula | KF |
| IUPAC Name | potassium fluoride |
| Molecular weight | 58.09 g/mol |
| Solubility | Soluble in water and insoluble in alcohol |
| Density | 2.48 g/cm3 at 20 °C |
| Appearance | White powder to crystal |
| Storage | Store at room temperature |
| Chemical Properties | |
| Color | Ruby red |
| Physical State | Solid |
| Melting Point | 857 °C |
| Boiling Point | 1.505 °C |
| Vapor Pressure | 1.3 hPa (885 °C) |
| Ph Value | 8-9 (20 °C, 50 g/L in H2O) |
| Odor | Odorless |
| Pictograms : | ![]() ![]() |
| Hazard Statements : | H301+H311+H331: Toxic if swallowed, in contact with skin or if inhaled |
| Precautionary Statements: | P261: Avoid breathing dust/fume/gas/mist/vapours/spray. P280: Wear protective gloves/protective clothing/eye protection/face protection. P301+P310: IF SWALLOWED: Immediately call a POISON CENTER/doctor |
Potassium Fluoride is an inorganic compound composed of potassium and fluoride ions. It has the chemical formula KF and belongs to the alkali halide group. The compound generally appears as a white crystalline solid or powder and is highly soluble in water. It also occurs naturally in small amounts as the rare mineral carobbiite. Potassium fluoride is an important source of fluoride ions for chemical and industrial processes. Fluoride can function as a nucleophile or support specific transformations in chemical reactions. Aqueous solutions of potassium fluoride also react with silica to form soluble fluorosilicates which explains their ability to etch glass. Its high solubility and availability of fluoride-ion make it a valuable reagent in chemical synthesis, manufacturing and materials research.

CAS No.: 7789-23-3
Synonyms: Potassium fluoride (KF), potassium fluorure, Fluorure de potassium.
| Physical Properties | |
| Chemical formula | KF |
| IUPAC Name | potassium fluoride |
| Molecular weight | 58.09 g/mol |
| Solubility | Soluble in water and insoluble in alcohol |
| Density | 2.48 g/cm3 at 20 °C |
| Appearance | White powder to crystal |
| Storage | Store at room temperature |
| Chemical Properties | |
| Color | Ruby red |
| Physical State | Solid |
| Melting Point | 857 °C |
| Boiling Point | 1.505 °C |
| Vapor Pressure | 1.3 hPa (885 °C) |
| Ph Value | 8-9 (20 °C, 50 g/L in H2O) |
| Odor | Odorless |
| Pictograms : | ![]() ![]() |
| Hazard Statements : | H301+H311+H331: Toxic if swallowed, in contact with skin or if inhaled |
| Precautionary Statements: | P261: Avoid breathing dust/fume/gas/mist/vapours/spray. P280: Wear protective gloves/protective clothing/eye protection/face protection. P301+P310: IF SWALLOWED: Immediately call a POISON CENTER/doctor |
Potassium fluoride is mainly used as a source of fluoride ions in chemical synthesis and manufacturing. It also has applications in glass etching, solder fluxes, metal processing and specialized laboratory research.
An aqueous solution of Potassium Fluoride is basic. The fluoride ion can interact with water to produce a small amount of hydroxide ions which raises the pH of the solution.
The chemical formula of Potassium Fluoride is KF. Its structure consists of potassium ions (K⁺) and fluoride ions (F⁻) held together by ionic attraction.