硫氰酸钠,540-72-7,Sodium thiocyanate GB/T 1268-84 项目Item 优级纯 分析纯 化学纯 (GR) (AR) (CP) 含量(NaCNS)Assay,% ≥ 99.0 98.5 98.0 澄清度试验Clarity 合格 合格 合格 水不溶物Insiluble matter in water,% ≤ 0.002 0.002 0.01 氯化物(Cl)Chloride,% ≤ 0.005 0.001 0.02 硫酸盐(SO4)Sulfate,% ≤ 0.005 0.01 0.025 铵盐(NH4)Ammonium,% ≤ 0.001 0.005 0.02 铁(Fe)Iron,% ≤ 0.0001 0.0003 0.0006 重金属(以Pb计)Heavy metals,% ≤ 0.0002 0.0005 0.001 耗碘物质(硫化物) Substances reduciny iodine 合格 合格 合格 ACS级 项目名称 ACS Grade 含量(NaCNS)Assay ≥98.0% 水不溶物Insoluble matter ≤0.005% 碳酸盐(Na2CO3)Carbonate ≤0.2% 氯化物(Cl)Chloride ≤0.01% 硫酸盐(SO4)Sulfate ≤0.01% 硫化物(以S计)Sulfide ≤0.001% 铵盐(NH4)Ammonium ≤0.002% 重金属(以Pb计)Heavy metals ≤5ppm 铁(Fe)Iron ≤2ppm 硫氰酸钠,540-72-7,Sodium thiocyanate ≥99.99% metals basis: 外观Appearance 白色粉末或结晶 X-射线衍射分析X-Ray Diffraction Conforms to standard 红外光谱鉴别Infrared spectrometry Conforms to Structure 纯度Purity ≥99.99% Based on Trace Metals Impurities of ICP 纯度Purity ≥98.5-101.5% (Titration by AgNO3) ICP: Confirms Na and S Components Confirmed 痕量金属分析Trace Metal Analysis ≤200ppm by ICP Atomic emission and Atomic Absorption Combined (Al、Ba、Ca、Cu、Mg、Sn、Zn、Li、K、Rb、Cs) |