无色结晶，易潮解，易溶于水，能溶于醇。缓慢加热至300℃放出氯气。易生成乙醇化物和醚合物。溶于水，同时放出大量热而得到澄清溶液。有刺激性。
密度：2.41
熔点：712℃
沸点：1412℃

GB/T672-88
项目Item                                            优级纯　　　分析纯　　　
                                                           (GR)           (AR)       
含量(MgCl2•6H2O)Assay,%               ≥99.0              98.0       
水溶液反应Water solution reaction       合格　　　　合格　　　　
澄清度试验Clarity　　　　　　　　   合格　　　　合格　　　　
水不溶物Insoluble matter,%                ≤0.003           0.005       
乙醇溶解试验Solubility(inethanol)       合格　　　　合格　　　　
硫酸盐(SO4)Sulfate,%                      ≤0.02             0.005     
总氮量(N)Total nitrogen,%               ≤0.002            0.005      
磷酸盐(PO4)Phosphate,%                  ≤0.0005      0.001     
钙(Ca)Calcium,%                            ≤0.01             0.05        
铁(Fe)Iron,%                                   ≤0.002           0.0005     
钡和锶(以Ba计)Barium and strontium,%  ≤0.002       0.005       
重金属(以Pb计)Heavy metals,%          ≤0.0002      0.0005     


ACS级
项目名称Item                         ACS Grade
含量(MgCl2•6H2O)Assay                 99.0-102.0%
水不溶物Insoluble matter              ≤0.005%
硝酸盐(NO3)Nitrate                    ≤0.001%
磷酸盐(PO4)Phosphate                  ≤5ppm
硫酸盐(SO4)Sulfate                    ≤0.002%
铵(NH4)Ammonium                       ≤0.002% 
钡(Ba)Barium(Ba)                      ≤0.005%
钙(Ca)Calcium(Ca)                     ≤0.01%
锰(Mn)Manganese(Mn)                   ≤5ppm
钾(K)Potassium(K)                     ≤0.005%
钠(Na)Sodium(Na)                      ≤0.005%
锶(Sr)Strontium(Sr)                   ≤0.005%
重金属(以Pb计)Heavy metals(as Pb)     ≤5ppm
铁(Fe)Iron(Fe)                        ≤5ppm



品级Grade                                细胞和昆虫细胞培养专用   
                                  (for cell culture, for insect cell culture) 
外观Appearance                            白色粉末
纯度Purity                                ≥99.0% (T)   
水溶解试验solubility in water             clear colorless ,500mg/ml in water
细胞培养测试Cell culture test             pass
昆虫细胞培养测试Insect cell culture test  pass



品级Grade                               分子生物学级   
                                 (grade for molecular biology ) 
含量assay                                 ≥99.0% (T) 
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)                    ≤0.0002%  
pH                                        5.0-7.5 (25 °C, 1 M in H2O) 
水溶性solubility H2O:                     soluble1 M at 20 °C, clear, colorless 
磷酸根 phosphate (PO43-):                 ≤5 ppm 
硫酸根sulfate (SO42-):                    ≤50 ppm 
痕量阳离子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:                                      ≤2000 ppm 
  Li:                                     ≤5 ppm 
  Mn:                                     ≤5 ppm 
  Mo:                                     ≤5 ppm 
  Na:                                     ≤3000 ppm 
  Ni:                                     ≤5 ppm 
  Pb:                                     ≤5 ppm 
  Sr:                                     ≤5 ppm 
  Zn:                                     ≤5 ppm 
λ 1 M in H2O 
紫外吸收UV absorption 
  λ: 260 nm A:                            ≤0.030 
  λ: 280 nm A:                            ≤0.025 



99.99% metals basis：


外观Appearance                          白色结晶
X-射线衍射分析X-Ray Diffraction         Conforms to Structure 
纯度Purity                              ≥99.99% Based On Trace Metals Analysis of ICP
镁Mg                                    11.6 - 12.3 % (Complexometric EDTA) 
ICP:                                    Confirms Magnesium Component Confirmed 
痕量金属分析Trace Metal Analysis        ≤100ppm by ICP Atomic emission
（Ba、B、Ca、Mn、Na)

安全说明            24/25 
    WGK Germany  1 
    RTECS              OM2975000 
    F                         3 
    海关编码           28273100 

砷酸和磷酸的定量分析，制备镁氧混合物等。渗透压调节剂；局部止通剂；缓冲剂。
分子生物学级用于激活限制性内切酶。 
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