项目 优级纯(GR)
外观Appearance 白色结晶粉末
红外光谱鉴定Infrared spectrometry 和对照品匹配
纯度Purity >99.0% (RT)
水分Water <1 % (K.F.)
重金属Heavy metals (as Pb) <10 ppm
硫酸盐灰分Sulfated ash <0.05 %
痕量分析Trace analysis
氯chloride (Cl-): <20 ppm
硫酸根sulfate (SO42-) <50 ppm
铁Iron(Fe) <20 ppm
项目 分析纯 (AR)
外观Appearance 白色或无色结晶
红外光谱鉴定Infrared spectrometry 和对照品匹配
熔点Melting point 189°C - 191°C
纯度Purity ≥98.0% (RT)
99.99% metals basis:
外观Appearance White Powder/Crystals
纯度Purity ≥99.99% Based on Trace Metals Impurities of ICP
纯度Purity 98.0 - 102.0 % (Titration by NaOH)
痕量金属分析total metallic impurities ≤100ppm by ICP Atomic emission
99.999% metals basis:
外观Appearance White Powder/Crystals
纯度Purity ≥99.999% Based on Trace Metals Impurities of ICP
纯度Purity 98.0 - 102.0 % (Titration by NaOH)
痕量金属分析total metallic impurities ≤20ppm by ICP Atomic emission
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