... greyish powder 2.Purity:>=98.8% 3.Industrial Grade Soda Ash 1, Property White or greyish powder, odorless,tasteless ... applied to chemical industry (Manufacture of Caustic Soda and dyestuffs), metallurgy (processing of steel and extraction of iron etc), architecture (flat glass ... rock oil refining, paper manufacturing, paint, salt refining, softening of hard water, soap, medicine , food and so on.4, ...