... . Annual output of 500,000 tons. ISO9001:2008 1. supply Sodium carbonate(soda ash light & soda ash dense) at low price ... .8Soda Ash(wet-basis) % ≥97.997.5NaCl (dry-basis) %≤0.70.9Fe%(dry-basis) ≤0.00350.006Water insoluble % ≤0.030.1Tap ... , bleaching, paper making, refined petroleum, metallurgy and other chemical industries. Sodium carbonate,soda ash 99.2