Product Introduction | Potassium Salt Product Tree——（1）Potassium Fluoride
Potassium fluoride , element symbol K, is one of the elements of the IA group and belongs to the alkali metal elements. The single substance is a silvery white soft metal, waxy, can be cut with a knife, has low melting and boiling points, lower density than water, and extremely active chemical properties (more active than sodium). Potassium does not exist in the form of single substance in nature. Potassium is widely distributed in the land and ocean in the form of salt, and is also one of the important components of human muscle tissue and nerve tissue.
Potassium in nature plays an important role in maintaining human health and promoting plant growth. In addition, many potassium-containing compounds also play an important role in industrial production . For this reason, the editor will introduce potassium fluoride in a series.
| Product Name: Potassium Fluoride |
| English name: Potassium fluoride |
| Chemical formula: KF |
| Molecular weight: 58.10 |
| Customs code: 28261900 |
| use: It is mainly used in the production of pharmaceutical intermediates , fluorinating agents for halogen exchange of organic chlorides and bromides, alkaline catalysts for organic synthesis reactions, dehydrating agents and additives for the manufacture of tantalum materials. It is also used in the production of intermediates for anticancer drugs, pesticides, dyes and other industrial products. It is used in the production of many inorganic compounds such as potassium hydrogen fluoride, potassium fluoroaluminate, titanium tetrafluoride, fluoroaluminum mullite, etc. It is also used in glass engraving, food preservation, electroplating, welding flux, etc. It is used in medicine to produce norfloxacin. High-purity potassium fluoride is used in the Stockbarger method to produce single crystals. |
| Physical and chemical properties: White cubic deliquescent powder with a distinct salty taste. Relative density 2.481, melting point 858℃, boiling point 1505℃. Soluble in water. Potassium fluoride has two hydrates, KF·2H2O and KF·4H2O. Potassium fluoride dihydrate is crystallized in an aqueous solution at a temperature below 40℃, is stable at room temperature, and loses crystal water above 40℃. Anhydrous potassium fluoride can only remove a few percent of water by long-term drying at 250-300℃, and cannot be pyrolyzed at a high temperature of 1000℃. Potassium fluoride aqueous solution is alkaline and can corrode glass. Molten potassium fluoride is highly active and can corrode glass. |
| Production method |
| Neutralization method . Prepared with potassium hydroxide and hydrogen fluoride as raw materials. Put solid potassium hydroxide of superior grade or above into a reactor containing an equal amount of water, and then pass anhydrous hydrogen fluoride from the bottom of the reactor for neutralization. When pH=7-8, stop passing anhydrous hydrogen fluoride, let the reaction liquid settle for 24 hours, and the clear liquid is vacuum evaporated, crystallized, transitionally separated, and dried to obtain the product. The reaction formula is as follows: HF+KOH→KF+H2O The reaction solution can also be mixed with a surfactant, and after spray drying, a potassium fluoride product with high bulk density, high specific surface area, low hygroscopicity, high activity and reduced usage can be obtained. |
| Packaging, storage and transportation |
| Use polypropylene woven bags lined with two layers of polyethylene plastic bags or polyethylene plastic barrels. The net weight of the enzyme belt is 10kg or 25kg, and the net weight of each barrel is 50kg. It should be stored in a ventilated, cool and dry warehouse. The packaging should be firm and avoid packaging contamination, damage and moisture to prevent moisture and agglomeration. It cannot be stored or transported together with food or acidic or alkaline items. It should be protected from rain or strong sun during transportation. There should be a clear "drugs" mark on the package. |