項(xiàng)目Item　　　　　　　　　　           分析純　　  化學(xué)純
                                        (AR)        (CP)
含量(CsCl)Assay,%　　　                ≥99.5       99.0
澄清度試驗(yàn)Clarity                        合格       合格
水溶液反應(yīng)Water solution reaction        合格       合格
甲醇溶解試驗(yàn)Solubility in methanol       合格       合格
硫酸鹽(SO₄)Sulfate,%                  ≤0.01       0.05
硝酸鹽(NO₃)Nitrate,%                  ≤0.004      0.02  
銨鹽(NH₄)Ammonium,%                   ≤0.004      0.02
鈉(Na)Sodium,%                        ≤0.02       0.10
鎂(Mg)Magnesium,%                     ≤0.01       0.02
鋁(Al)Aluminum,%                      ≤0.005      0.02
鈣(Ca)Calcium,%                       ≤0.01       0.03
鐵(Fe)Iron,%                          ≤0.0002     0.002
重金屬(以Pb計(jì))Heavy metals,%          ≤0.001      0.005



品級(jí)Grade                               光譜級(jí)  
                                    (optical grade, ≥99.5%)
外觀Appearance                          White Powder
紅外光譜鑒別Infrared spectrometry       Conforms to Structure
金屬純度metal purity                    ≥99.5%  
水溶解試驗(yàn)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:


外觀Appearance                          White Crystals, Beads or Chunks
X-射線衍射分析X-Ray Diffraction         Conforms to Structure
純度Purity                              ≥99.9% Based on Trace Metals Impurities of ICP
氯Cl(Titration by AgNO3)                20.8 - 21.3 %
痕量金屬分析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:


外觀Appearance                          White Crystals, Beads
X-射線衍射分析X-Ray Diffraction         Conforms to Structure
純度Purity                              ≥99.99% Based on Trace Metals Impurities of ICP
氯Cl(Titration by AgNO3)                20.8 - 21.3 %
痕量金屬分析total metallic impurities   ≤200ppm by ICP Atomic emission


≥99.999% metals basis：



外觀Appearance                          White Crystalline Powder
X-射線衍射分析X-Ray Diffraction         Conforms to Structure
ICP:                                    Confirms Cesium Component Confirmed
氯Cl(Titration by AgNO3)                20.8 - 21.4 %
痕量金屬分析Trace Metal Analysis        ≤20.0 ppm
(Li、Rb、Ag、Al)



品級(jí)Grade                               分子生物學(xué)級(jí)  
                        (for molecular biology, ≥99.5% (AT)）
純度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
總氮total nitrogen (N)                  ≤0.001%  
干燥損失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
陽離子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

聯(lián)合國(guó)編號(hào) 
Risk：  R68- 
Safety :  S36/37 - 
Hazard :  Xn - 

點(diǎn)滴分析三價(jià)鉻和鎵，無線電、電視機(jī)真空管最后的抽成真空，X射線熒光屏，無線電反襯介質(zhì),制取金屬銫和含銫單晶的原料。氣相色譜固定液(最高使用450℃，溶劑為水)，用于高溫色譜分析二聯(lián)苯、三聯(lián)苯。