| Potassium fluoride | |
|---|---|
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| IUPAC name | Potassium fluoride |
| Identifiers | |
| CAS number | [7789-23-3] |
| RTECS number | TT0700000 |
| Properties | |
| Molecular formula | KF |
| Molar mass | 58. IUPAC Nomenclature is a system of naming Chemical compounds and of describing the science of Chemistry in general CAS registry numbers are unique numerical identifiers for Chemical compounds Polymers biological sequences mixtures and Alloys They are also referred to Registry of Toxic Effects of Chemical Substances ( RTECS) is a Database of Toxicity information compiled from the open scientific literature without reference A chemical formula is a way of expressing information about the Atoms that constitute a particular Chemical compound, and how the relationship between those atoms changes Molar mass, symbol M, is the Mass of one mole of a substance ( Chemical element or Chemical compound) 10 |
| Appearance | colourless crystals |
| Density | 2. The density of a material is defined as its Mass per unit Volume: \rho = \frac{m}{V} Different materials usually have different 48 g/cm3 |
| Melting point |
846 °C |
| Boiling point |
1505 °C |
| Solubility | HF |
| Hazards | |
| NFPA 704 |
 0
3
0
|
| R-phrases | 23/24/25 |
| S-phrases | 26-45 |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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Potassium fluoride is the chemical compound with the formula KF. The melting point of a solid is the temperature range at which it changes state from solid to Liquid. The boiling point of a liquid is the temperature at which the Vapor pressure of the liquid equals the environmental pressure surrounding the liquid Solubility is the characteristic Physical property referring to the ability of a given substance the Solute, to dissolve in a Solvent. Symbolism The four divisions are typically color-coded with blue indicating level of Health Hazard, red indicating R-phrases (short for Risk Phrases) are defined in Annex III of European Union Directive 67/548/EEC: Nature of special risks attributed to dangerous S-phrases are defined in Annex IV of European Union Directive 67/548/EEC: Safety advice concerning dangerous substances and preparations. In Chemistry, the standard state of a material is its state at 1 bar (100 Kilopascals exactly A chemical compound is a substance consisting of two or more different elements chemically bonded together in a fixed proportion by Mass. After hydrogen fluoride, KF is the primary source of the fluoride ion for applications in manufacturing and in chemistry. Structure HF forms orthorhombic crystals consisting of zig-zag chains of HF molecules Fluoride is the reduced form of Fluorine. Both organic and Inorganic compounds containing the element fluorine are considered fluorides It is an alkali metal halide and occurs naturally as the rare mineral carobbiite. Trends The alkali metals show a number of trends when moving down the group - for instance decreasing electronegativity increasing reactivity and decreasing melting and boiling A halide is a Binary compound, of which one part is a Halogen Atom and the other part is an element or radical that is less A mineral is a naturally occurring substance formed through geological processes that has a characteristic chemical composition a highly ordered atomic structure and specific Carobbiite, chemical formula KF ( Potassium fluoride) is a rare soft (Mohs 2 - 2 Aqueous solutions of KF will etch glass due to the formation of soluble fluorosilicates, although HF is more effective.
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Applications in organic chemistry
In organic chemistry, KF is the preferred source of fluoride for the conversion of chlorocarbons into fluorocarbons. Organic chemistry is a discipline within Chemistry which involves the scientific study of the structure properties composition reactions, and preparation Applications The simplest form of organochlorides are chlorinated Hydrocarbons These consist of simple Hydrocarbons in which one or more hydrogen atoms have Fluorocarbons are chemical compounds that contain Carbon - Fluorine bonds The relatively low reactivity and high polarity of the carbon-fluorine bond imparts [1] Such reactions usually employ polar solvents such as dimethyl formamide, ethylene glycol, and dimethyl sulfoxide. Dimethylformamide is the Organic compound with the formula ( CH3)2NC(OH Ethylene glycol ( monoethylene glycol ( MEG) 12-ethanediol, IUPAC name: ethane-12-diol) is an Alcohol with two -OH Dimethyl sulfoxide (DMSO is the Chemical compound with the formula (CH32SO [2]
Safety considerations
Like other sources of the fluoride ion, F−, KF is poisonous, although lethal doses approach gram levels for humans. It is harmful by inhalation and ingestion, highly corrosive and skin contact may cause severe burns.
References
- ^ Vogel, A. I. ; Leicester, J. ; Macey, W. A. T. “n-Hexyl Fluoride” Organic Syntheses, Collected Volume 4, p. 525 (1963). http://www.orgsyn.org/orgsyn/pdfs/CV4P0525.pdf
- ^ Han, Q. ; Li, H-Y. "Potassium Fluoride" in Encyclopedia of Reagents for Organic Synthesis, 2001 John Wiley & Sons,New York. DOI: 10. 1002/047084289X. rp214
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