Specification : Item Soda Ash Dense Soda Ash Light Na2CO3 % 99.2min 99.2min NaCl % 0.7max 0.7max Iron Content % 0.0035max 0.0035max Sulfate(S04)% 0.03max 0.03max Water insoluble % 0.03max 0.03max Bulk density g/ml 0.90 min 0.5-0.6 Particle size (180um sieving residue %) 70.0min 70.0min Application: 1. The manufacture of glass is one of the most important uses of sodium carbonate. When it is combined with silica (SiO2) and calcium carbonate (CaCO3) and heated to very high temperatures, then cooled very rapidly, glass is produced. This type of glass is known as soda lime glass. 2. Soda ash also is used to clean the air and soften water. 3. Manufacture of Caustic Soda and dyestuffs 4. metallurgy: in the processing of steel and extraction of iron etc. 5. Detergent : It is used as detergent in wool rinsing,medicine and tanning. 6. National defense and some other aspects, such as rock oil refining, paper manufacturing, paint, salt refining, softening of hard water, soap, medicine , food and so on.