性状 白色粉状结晶,易潮解,易溶于水,能溶于醇,不溶于丙酮. 密封干燥保存,1290℃升华。 熔点:646℃ 沸点:1303℃ 备注: 以上描述,仅作参考,并不表示您收到的产品,与此项描述完全相符,产品的出厂标准,请参见质量标准。 质量标准 项目Item 分析纯 化学纯 (AR) (CP) 含量(CsCl)Assay,% ≥99.5 99.0 澄清度试验Clarity 合格 合格 水溶液反应Water solution reaction 合格 合格 甲醇溶解试验Solubility in methanol 合格 合格 硫酸盐(SO4)Sulfate,% ≤0.01 0.05 硝酸盐(NO3)Nitrate,% ≤0.004 0.02 铵盐(NH4)Ammonium,% ≤0.004 0.02 钠(Na)Sodium,% ≤0.02 0.10 镁(Mg)Magnesium,% ≤0.01 0.02 铝(Al)Aluminum,% ≤0.005 0.02 钙(Ca)Calcium,% ≤0.01 0.03 铁(Fe)Iron,% ≤0.0002 0.002 重金属(以Pb计)Heavy metals,% ≤0.001 0.005
品级Grade 光谱级 (optical grade, ≥99.5%) 外观Appearance White Powder 红外光谱鉴别Infrared spectrometry Conforms to Structure 金属纯度metal purity ≥99.5% 水溶解试验solubility in water clear colorless , 1mg/ml in water 水分Water (by Karl Fischer) ≤3% 紫外吸收UV absorbance (50% in water) ≤ 0.02 at 280nm 硫酸根sulfate ≤ 500 ppm
99.9% metals basis:
外观Appearance White Crystals, Beads or Chunks X-射线衍射分析X-Ray Diffraction Conforms to Structure 纯度Purity ≥99.9% Based on Trace Metals Impurities of ICP 氯Cl(Titration by AgNO3) 20.8 - 21.3 % 痕量金属分析total metallic impurities ≤2000ppm by ICP Atomic emission (Rb、K、Na、Li、Al、Ba、Ca、Cr、Cu、Fe、Mg、Mn、Ni、Pb、Si)
99.99% metals basis:
外观Appearance White Crystals, Beads X-射线衍射分析X-Ray Diffraction Conforms to Structure 纯度Purity ≥99.99% Based on Trace Metals Impurities of ICP 氯Cl(Titration by AgNO3) 20.8 - 21.3 % 痕量金属分析total metallic impurities ≤200ppm by ICP Atomic emission
≥99.999% metals basis:
外观Appearance White Crystalline Powder X-射线衍射分析X-Ray Diffraction Conforms to Structure ICP: Confirms Cesium Component Confirmed 氯Cl(Titration by AgNO3) 20.8 - 21.4 % 痕量金属分析Trace Metal Analysis ≤20.0 ppm (Li、Rb、Ag、Al)
品级Grade 分子生物学级 (for molecular biology, ≥99.5% (AT)) 纯度Purity ≥99.5% (AT) DNA酶DNases, none detected RND酶RNases, none detected 不溶物insoluble matter, passes filter test 磷酸酶phosphatases, none detected 蛋白酶proteases, none detected 总氮total nitrogen (N) ≤0.001% 干燥损失loss on drying, 110 °C ≤0.1% pH 6.0-7.5 (25 °C, 3 M in H2O) 水溶性solubility H2O: soluble3 M at 20 °C, clear, colorless 硫酸根sulfate (SO42-): ≤20 ppm 阳离子cation traces by ICP Atomic emission Al: ≤5 ppm As: ≤0.1 ppm Ba: ≤5 ppm Bi: ≤5 ppm Ca: ≤50 ppm Cd: ≤5 ppm Co: ≤5 ppm Cr: ≤5 ppm Cu: ≤5 ppm Fe: ≤5 ppm K: ≤50 ppm Li: ≤5 ppm Mg: ≤5 ppm Mn: ≤5 ppm Mo: ≤5 ppm Na: ≤50 ppm Ni: ≤5 ppm Pb: ≤5 ppm Sr: ≤5 ppm Zn: ≤5 ppm λ 3 M in H2O UV absorption λ: 260 nm A: ≤0.02 λ: 280 nm A: ≤0.02 贮存 易吸潮 用途 点滴分析三价铬和镓,无线电、电视机真空管最后的抽成真空,X射线荧光屏,无线电反衬介质,制取金属铯和含铯单晶的原料。气相色谱固定液(最高使用450℃,溶剂为水),用于高温色谱分析二联苯、三联苯。 联合国编号 Risk: R68- Safety : S36/37 - Hazard : Xn - |