高纯硝酸钡理化指标项目指标（%）硝酸钡含量Ba（NO3）2≥99.7水份（H2O计）≤0.02水不溶物≤0.01锶（Sr计）≤0.05氧化钙（CaO计）≤0.02氯（CL计）≤5ppm铁（Fe计）≤1ppm