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Barium carbonate (BaCO3), also known as witherite, is a chemical compound used in rat poison, bricks, ceramic glazes and cement.

Preparation
Barium carbonate is made commercially from barium sulfide either by treatment with sodium carbonate at 60 to 70 °C (soda ash method) or by passing carbon dioxide at 40 to 90 °C.

In the soda ash process, solid or dissolved sodium carbonate is added to barium sulfide solution, and the barium carbonate precipitate is filtered, washed and dried.

Ammonium chloride is an inorganic compound with the formula NH4Cl and a white crystalline salt that is highly soluble in water. Solutions of ammonium chloride are mildly acidic. Sal ammoniac is a name of the natural, mineralogical form of ammonium chloride. The mineral is commonly formed on burning coal dumps from condensation of coal-derived gases. It is also found around some types of volcanic vents. It is mainly used as fertilizer and a flavouring agent in some types of liquorice. It is the product from the reaction of hydrochloric acid and ammonia.

Diesel Guard NB Liquid

Diesel Guard NB Liquid is also known as Cooling  water corrosion and scale inhibitor. Corrosion inhibitor for water systems having unique formulation with highly concentrated liquid cooling treatment compound, They are useful for  prevention of corrosion and scale formation in internal combustion engines, compressors, chiller systems and DG sets in high or low temperature closed cooling  water systems. Minimizes metal oxide deposits and protects ferrous and non ferrous metals.