Potassium hydroxide appears as a white flake or powder, with strong corrosiveness and alkalinity. The appearance of potassium hydroxide solution is colorless and transparent. When potassium hydroxide is exposed to the air, it is easily deliquescent by the moisture in the air and absorbs carbon dioxide to form potassium carbonate.
When potassium hydroxide is easily soluble in water, ethanol, or acid, it releases a large amount of heat. The chemical formula of potassium hydroxide solution is KOH, with a molecular weight of 56.1, a boiling point of 1324 ℃, a melting point of 360.4 ℃, and a relative density (water=1) of 2.04. The pH of 0.1mol/L solution is 13.5.
Potassium hydroxide is mainly used as a desiccant and absorbent. It is also used for electroplating, carving, lithography, etc. In the textile industry, it is used for printing, dyeing, and bleaching, and is widely used as the main raw material for manufacturing artificial fibers and polyester fibers.
Sodium hydroxide, commonly known as flake alkali, is a white semi transparent solid with strong corrosiveness. When sodium hydroxide is dissolved in water, it forms an alkaline solution. Its aqueous solution does not absorb water, but it can react with acids and release heat, which may produce toxic smoke.
Sodium hydroxide relative density 2.130; Melting point 318.4 ℃; Boiling point 1390 ℃. The quality standards for sodium hydroxide are 99 tablets of alkali and 96 tablets of alkali, respectively.
Sodium hydroxide is widely used in light textile industries such as viscose fibers, rayon, and cotton fabrics, as well as in the fields of pesticides, dyes, rubber, and chemical industries, petroleum drilling, refining of petroleum oils, and refining of tar in the petroleum industry.
Potassium hydroxide solution has stronger moisture absorption than sodium hydroxide, so potassium hydroxide is commonly used as a desiccant. For more related matters, come to our website http://www.tmgwork.com Consult!