KOH- potassium hydroxide KOH- Potassium Hydroxide ProductPotassium HydroxideAppearance White flakesStandardHG/T3688 2000UN Code1813 CLASS 8 PKG IICAS Code1310-58-3HS Code2815.2000ItemInspection item %Premium GradeFirst Grade01KOH≥ 95≥ 9002K2CO3≤ 0.5≤ 0.503Chloride (Cl)≤ 0.005≤ 0.00504Fe≤ 0.0005≤ 0.000505Sulfate (SO4)≤ 0.005≤ 0.00506Nitrate (N)≤ 0.0005≤ 0.000507Na≤ 0.8≤ 0.808Phosphate (PO4)≤ 0.005 ...