... crystal, white powder, granular crystal or prill. Potassium carbonate tech grade is monoclinic crystal, white powder, granular crystal or prill. ... in water% Max0.02Burnt loss% Max0.6Arsenic% Max0.0003Heavy Metal(as Pb)% Max0.002Packing:Plastic woven bag or kraft ... -drug, polyester, explosives, electroplating, tanning, ceramic, building materials, crystals and medicine. Potassium carbonate tech grade