Sodium hydroxide, the chemical formula is NaOH, commonly known as caustic soda, caustic soda, caustic soda, is a strong corrosive alkali, generally in the form of flakes or particles, easily soluble in water (dissolving in water, exothermic) and forming Alkaline solution, otherwise deliquescence, easy to absorb water vapor (deliquescence) and carbon dioxide (deterioration) in the air.
Sodium hydroxide Industrial product contains a small amount of sodium chloride and sodium carbonate, which are white opaque crystals. There are blocks, flakes, granules and rods, etc. Sodium hydroxide with a formula of 40.01 can be used as an alkaline cleaning agent in water treatment, soluble in ethanol and glycerol, but insoluble in propanol and ether. It also has a corrosive effect on carbon and sodium at high temperatures. It undergoes disproportionation reaction with halogens such as chlorine, bromine and iodine, and neutralizes it with acids to generate salt and water.