Calcium Oxide 99%

Calcium Oxide 99% (CaO), commonly known as quicklime, is a high-purity inorganic compound obtained by the calcination of limestone (calcium carbonate) at high temperatures. It is typically available as white to off-white lumps, granules, or fine powder, depending on the grade and processing method.

Calcium oxide is a strongly alkaline and highly reactive compound, especially with water. When it comes into contact with moisture, it undergoes an exothermic reaction to form calcium hydroxide (slaked lime), releasing significant heat. Due to this property, it must be handled with care to avoid burns and uncontrolled reactions.

The material is sparingly soluble in water but reacts readily to form alkaline solutions. With a purity of 99%, it is widely used in steel manufacturing, water treatment, construction, chemical processing, and environmental applications. It is also employed in soil stabilization, pH control, flue gas treatment, and as a drying agent.

Calcium oxide is highly hygroscopic, readily absorbing moisture and carbon dioxide from the air, which can gradually convert it to calcium hydroxide or calcium carbonate. Therefore, it should be stored in airtight containers in a cool, dry environment to maintain its reactivity and quality.

Due to its caustic nature, calcium oxide can cause severe irritation or burns to skin, eyes, and respiratory tract. Proper protective equipment and careful handling are essential during storage and use.