Potassium hydroxide is a common inorganic base, which is white powder or flake solid at room temperature. Its properties are similar to sodium hydroxide. It is highly alkaline and corrosive. So what is the relative molecular weight and use of potassium hydroxide?
The relative molecular weight of potassium is 39. Relative molecular mass refers to the sum of the relative atomic mass of each atom in the chemical formula, expressed by the symbol Mr, with the unit of 1. For polymers, the relative molecular weight can reach tens of thousands or even hundreds of thousands; The chemical formula of the oxide with the lowest relative molecular weight is H2O. The relative molecular mass is numerically equal to the molar mass, but in different units. The unit of relative molecular mass is 1, and the unit of molar mass is g / mol.
Potassium hydroxide is still widely used. For example, in inorganic industry, it is used as raw material for the production of potassium salts such as potassium permanganate, potassium nitrite and dipotassium hydrogen phosphate. In the daily chemical industry, it is used as raw materials for manufacturing potassium soap, detergent soap, shampoo, makeup remover, cold cream, shampoo, etc. The pharmaceutical industry is used to manufacture progesterone and progesterone and other raw materials. Vanillin.
The dye industry is used to make melamine dyes. The battery industry is used to make alkaline batteries. It is used as desiccant and absorbent, in the manufacture of potassium soap, oxalic acid and various potassium salts, as well as electroplating, engraving, lithography, etc; It is mainly used as raw materials for the production of potassium salts, such as potassium permanganate, potassium carbonate, etc. In the electrochemical industry, it is used for electroplating, engraving, etc. In the textile industry, it is used for printing and dyeing, bleaching and mercerization. It is widely used as the main raw material for the manufacture of man-made fibers and man-made fibers. polyester.
Mercury electrolyte is prepared by diaphragm electrolysis. In the electrolytic chamber, graphite (or metal) is used as anode and mercury is used as cathode. The chlorine produced by electrolysis is sent to the chlorine drying process, and the generated potassium amalgam flows into the mercury dissolving chamber. Most of the unreacted potassium hydroxide is treated in light brine and then returned to the raw material dissolution process. Potassium amalgam reacts with water to produce potassium hydroxide and hydrogen. As the product concentration in the mercury dissolving chamber is 45% - 50%, it can be used as liquid products, or it can be steamed and concentrated into solid alkali in an alkaline cooking pot, or made into thin-film products.
The raw material potassium hydroxide for diaphragm electrolysis is dissolved into a saturated solution in a salt dissolving tank. When heated to 90 ℃, add potassium carbonate, caustic potassium and barium chloride respectively to remove impurities such as calcium, magnesium and sulfate. Preheat the solution containing 280-315g / L after precipitation, slag removal, hydrochloric acid neutralization and purification, and electrolytic to obtain potassium hydroxide, chlorine and hydrogen. The product concentration obtained by diaphragm method is 10% - 11%, which needs to be evaporated, concentrated, cooled and clarified to make a solution containing 45% - 50% potassium hydroxide; The sheet is obtained as a potassium hydroxide product in the form of a sheet.
The relative molecular weight of potassium hydroxide and the solution used are related to the above contents. If you have any questions about the use of this product, you can go to www.jinhao360.com Com website. Don't do experiments at home by yourself. It's still dangerous.