项目指标分析纯化学纯含量（KIO3）%≥99.8≥99.8PH（25℃）5.0-7.05.0-7.0澄清度试验合格合格水不溶物%≤0.002≤0.005干燥失重%≤0.05≤0.1氯化物及氯酸盐（以Cl计）%≤0.005≤0.02碘化物（I）%≤0.001≤0.002***盐（SO4）%≤0.003≤0.01总氮量（N）%≤0.002≤0.003钠（Na）%≤0.01≤0.02铁（Fe）%≤0.0002≤0.0005***（以pb计）%≤0.0005≤0.001)