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

联合国编号 
Risk：  R68- 
Safety :  S36/37 - 
Hazard :  Xn - 

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。