... Carbonate is foliar spray fertilizer and a constituent of compound fertilizer. In dyeing industry, it is ... used to produce vat dyestuff and discharge of ice dyeing. It is absorbent removing hydrogen ... . In addition, it is also used in manufacture of printing ink, photograph-drug, polyester, explosives, electroplating, ... ≤0.002standardGB/T 1587-2000HG2452-93 Technical Grade of Potassium Carbonate