氢氧化钾

ItemPurity grade (%) Superior quality First-grade Potassium hydroxide ≥ 95.0 ≥ 90.0 Potassium carbonate (as K2CO3) ≤ 0.5 ≤ 0.5 Chlorides (as Cl) ≤ 0.005 ≤ 0.005 Fe ≤ 0.0005 ≤ 0.0005 Sulfate (SO4) ≤ 0.005 ≤ 0.005 Nitrate and nitrite (n) ≤ 0.0005 ≤ 0.0005 Na ≤ 0.8 ≤ 0.8 Phosphate (PO4) ≤ 0.005 ≤ 0.005 Silicate (SiO3) ≤ 0.01 ≤ 0.01 Al ≤ 0.002 ≤ 0.002 Ca ≤ 0.005 ≤ 0.005 Ni ≤ 0.0005 ≤ 0.0005 Heavy metal (Pb) ≤ 0.002 ≤ 0.002