Calcium hydroxide, commonly known as slaked lime, is a chemical compound with the formula Ca(OH)₂. It is a white, odorless powder that is highly soluble in water, forming a strong alkaline solution. This compound is often used in construction, particularly in the production of lime mortar and lime plaster, due to its ability to improve the strength and durability of building materials. In addition to construction, calcium hydroxide has various applications in agriculture, where it helps to neutralize acidic soils and improve crop yields. It is also used in water treatment processes to remove impurities and in the food industry as a food additive.