Soda Ash Specification: Item Soda Ash Dense Soda Ash Light Index Index Total alkali(quality fraction of Na2CO3 dry basis) 99.2% min 99.2% min NaCI (quality fraction of NaCI dry basis) 0.70% max 0.70% max Fe quality fraction (dry basis) 0.0035% max 0.0035% max Sulfate(quality fraction of SO4 dry basis) 0.03% max 0.03% max Water-fast substance in quality fraction 0.03% max 0.03% max Accumulation density(g/ml) 0.90% min Particle size, 180 �µ m sieving residue 70.0% min
