Caustic Soda also known as Lye, the chemical formula of sodium hydroxide is NaOH .It is highly basic compound. It is a colorless crystalline .It exhibits strong absorption properties at room temperature. Main physical and chemical properties of the products: relative density is 2.13; neck-lace form is 1.20; melting point is 318.4℃; Boiling point is 1390℃.
Caustic soda is used to make soaps, rayom, paper, explosives, dyestuffs, and petroleum products. It is also used in processing cotton fabric, laundering and bleaching, metal cleaning and processing, oxide coating, electroplating, and electrolytic extracting. It is commonly present in commercial drain and oven cleaners.