Tata Chemicals' products are utilised as essential raw materials in a wide range of chemical products and processes. As a source of sodium ions, soda ash is used in the production of important inorganic chemicals such as silicates, phosphates, chromates and percarbonates. The carbonate ion is a vital component in the production of metal carbonates such as zirconium, nickel and cobalt and is also vital for the large scale purification of brine.