... -3HS Code2815.2000ItemInspection item %Premium GradeFirst Grade01KOH≥ 95≥ 9002K2CO3≤ 0.5≤ 0.503Chloride (Cl)≤ 0.005≤ 0.00504Fe≤ 0.0005≤ 0 ... resin, potassium compound, herbicide, photo chemicals, pesticide, battery, concrete compound, medicines, optical brightener, Rosin Sizing agent. Etc. flakes potassium hydroxide90%95% Cas No:1310 ...