碳酸氢钠

性状：白色结晶粉末。密封保存。

相对分子质量：84.01

技术条件
含量(NaCO3),%                                                             ≥99.5
pH值（50g/L,25°C）                                                     ≤8.6                  
                                  杂质最高含量（以%计）
澄清度试验                                                                    合格
水不溶物                                                                        0.01
氯化物（Cl）                                                                 0.002
硫酸盐（SO4）                                                              0.005
总氮量（N）                                                                  0.001                
磷酸盐及硅酸盐（以SIO2计）                                         0.005
硅酸盐（以SIO2计）                                                      0.005
镁（Mg）                                                                      0.003
钾（K）                                                                         0.01
钙（Ca）                                                                       0.007
重金属（以Pb计）                                                         0.001