Calcium Nitrate is an inorganic compound and a colourless salt. It absorbs moisture from the air. This is formed by applying nitric acid to limestone. It is widely used as a component of fertilizers. This is a highly famous compound used in greenhouse and hydroponics trades. This is also widely used to control varied plant diseases such as bitter pit and cork spot. In addition to this, Calcium Nitrate is also used in waste water pre-conditioning processes for odour emission prevention.