The ingredients of milk of lime are calcium oxide and water.
The aqueous solution of milk of lime is often called lime water (it forms milk of lime or lime slurry in large quantities) and is alkaline. It absorbs carbon dioxide and water from the air and deteriorates. It is generally said to be hygroscopic. Typically used for construction or improvement of acidic soils. Since the solubility of calcium hydroxide is not very high, a suspension of calcium hydroxide is often generated (i.e. there is still undissolved calcium hydroxide in the aqueous solution), which is milk of lime.
Milk of lime is a fine white powder at room temperature, slightly soluble in water. Its aqueous solution is commonly called clear limewater, and its solubility decreases with increasing temperature. Insoluble in alcohol, soluble in acid, saltammonium and glycerol. Milk of lime is a strong base and corrosive to skin and tissues. However, due to its low solubility, it is not as harmful as strong bases like sodium hydroxide.
The chemical formula for milk of lime is Ca(OH)2.
When writing ionic equations, clarified limewater can be separated, but milk of lime cannot be separated. For slightly soluble substances such as slaked lime, the reactants in the equation can be separated when used as solutions, but generally not separated into products.
Milk of lime is a suspension obtained by reaction of calcined limestone with water. It is widely used in many fields
1. Construction materials: Milk of lime. can be used in the composition of building materials such as lime mortar and lime paint. Milk of lime has a goodhas good grip and breathability, which can improve the durability and waterproof performance of building materials.
2. Environmental protection: Milk of lime is widely used in the field of environmental protection, especially for purifying sewage and exhaust gas. Milk of lime can neutralize acidic substances present in acidic wastewater and waste gas, thereby reducing environmental pollution.
3. Agriculture: Milk of lime can be used for soil improvement and crop growth. It can neutralize acidic substances in the soil, increase soil pH, and improve soil structure and fertility. In addition, milk of lime can also be used as a phytosanitary agent to prevent the occurrence of pests and diseases.
4. Wastewater treatment: Milk of lime can be used for neutralization and precipitation.n lime in the wastewater treatment process. It can neutralize acidic substances in sewage and promote the precipitation of suspended matter in sewage, thereby purifying water quality.