... phosphate, etc. Potassium Carbonate is foliar spray fertilizer and a constituent of compound fertilizer. In dyeing industry, it is used to produce ... 's degreasing. In addition, it is also used in manufacture of printing ink, photograph-drug, polyester, explosives, electroplating, tanning, ceramic, ... .0003Heavy Metal(as Pb) % ≤0.002standardGB/T 1587-2000HG2452-93 Technical Grade of Potassium Carbonate