Calcium hydroxide
Calcium hydroxide
Calcium hydroxide (calcium hydroxide) is an inorganic compound with a chemical formula of Ca(OH)2 and a molecular weight of 74.10. It is commonly known as slaked lime or hydrated lime. It is a white hexagonal powder crystal. Density 2.243g/cm3. It loses water at 580℃ to become CaO.
After calcium hydroxide is added to water, it is divided into two layers, the upper aqueous solution is called clear lime water, and the lower suspension is called lime milk or lime slurry. The upper clear lime water can be used to test carbon dioxide, and the lower turbid liquid lime milk is a building material.
Calcium hydroxide is a strong alkali with bactericidal and antiseptic capabilities, and has a corrosive effect on skin and fabrics. Calcium hydroxide is used to make bleaching powder, hard water softeners, disinfectants and insecticides, depilatory agents for leather making, sugar refining and building materials, etc.
Calcium hydroxide has a wide range of applications in industry. Here are some common uses:
1. Making bleaching powder: Calcium hydroxide can be used as the main component of bleaching powder for bleaching paper, textiles, etc.
2. Disinfectants and pesticides: Calcium hydroxide has the ability to kill bacteria and preserve corrosion, and can be used to make disinfectants and pesticides.
3. Building materials: Calcium hydroxide can be used as an additive in building materials to improve the performance of materials, such as increasing strength and durability.
4. Lime water: The aqueous solution of calcium hydroxide is called lime water, which can be used to adjust soil pH, disinfection, cleaning, etc.
5. Environmental protection field: Calcium hydroxide can be used in environmental protection fields such as treating industrial wastewater and flue gas desulfurization.
In general, calcium hydroxide has a wide range of uses and is an important chemical substance.
