... greyish powder 2.Purity:>=98.8% 3.Industrial Grade Sodium Carbonate1, Property White or greyish powder, odorless,tasteless and ... applied to chemical industry (Manufacture of Caustic Soda and dyestuffs), metallurgy (processing of steel and extraction of iron etc), architecture (flat ... rock oil refining, paper manufacturing, paint, salt refining, softening of hard water, soap, medicine , food and so on.4, ...