calciumIIhydrogenfosfaat

Calcium(II) hydroxide, commonly known as slaked lime or hydrated lime, has the chemical formula Ca(OH)2. It is a white powder and is sparingly soluble in water. Calcium(II) hydroxide is produced industrially by the reaction of calcium oxide (quicklime) with water, a process called slaking. This reaction is exothermic, meaning it releases heat.

Calcium(II) hydroxide is a strong base. In aqueous solution, it dissociates into calcium ions (Ca2+) and hydroxide ions (OH-). This alkaline nature makes it useful in a variety of applications. It is used in the construction industry as a component of mortar and plaster. In agriculture, it is applied to soil to neutralize acidity and improve soil structure, a process often referred to as liming.

The food industry utilizes calcium(II) hydroxide as a food additive, often designated by the E number E526. It serves as an acidity regulator, firming agent, and raising agent. It is commonly used in the processing of sugar from sugar cane and sugar beets, and in the preparation of corn masa for tortillas and tamales. In water treatment, it is employed to soften water by precipitating magnesium and calcium ions, and to neutralize acidic wastewater. Due to its corrosive nature, handling calcium(II) hydroxide requires appropriate safety precautions to avoid skin and eye irritation.