Caustic Soda is accessible in flake and granular forms. It is hygroscopic by nature and is highly soluble in water. Its melting point is 318.4 degree C and its boiling point is 1390 degree C. It easily dilutes in glycerol and ethanol. Its relative density is 2.130. It totally dilutes into solution when comes in contact with air. Caustic Soda does not dilute in ether and acetone. As suitable reagent, it is used in paper production, metallurgy, textile and oil industries.