AR /  PT /  CP /  GR /  4N  / ACS /  SP
GB/T 639-86                            

项目Item                                                                分析纯   

                                                                                 (AR)    

含量(Na2CO3)Assay,%                                        99.8     

氮化合物(N)Nitrogen compounds,%                    0.001    

磷酸盐及硅酸盐(以SiO3计)                                  0.006    

Phosphate and Silicate,%

铁(Fe)Iron,%                                                            0.0005   

重金属(以Pb计)Heavy metals,%                           0.0005   

澄清度试验Clarity                                                    合格     

水不溶物Insoluble matter in water,%                     0.01     

干燥失重(300℃)Drying loss,%                             1.0      

氯化物(Cl)Chloride,%                                             0.002    

硫化合物(以SO4计)Sulfate compounds,%          0.005        

镁(Mg)Magnesium,%                                             0.002    

铝(Al)Aluminum,%　                                              0.003    

钾(K)Potassium,%　                                             0.005    

钙(Ca)Calcium,%                                                   0.01

名称无水碳酸钠           医药级英国药典2001 
项目                            指标 （%）
含量                             99.5-100.5 
澄清度                          Passed the test 
水不溶物                       -- 
干燥失重（300℃）        ≤1.0 
碳酸氢钠与氢氧化钠       Passed the test 
氯化物（以Cl计）           ≤0.0125 
硫化合物（以SO4计）   ≤0.025 
铁（Fe）                        ≤0.005 
重金属（以Pb计）         ≤0.005 
砷（AS）                       ≤0.0005