磷酸二氢钾

性状：无色结晶。密封保存。

相对分子质量：136.09

技术条件
含量（KH2PO4）,%                                                        >99.5
pH值（50g/L溶液,25°C）                                                4.2-4.5
                                   杂质最高含量（以%计）
澄清度试验,号                                                                 2
水不溶物                                                                         0.002
干燥失量                                                                         0.2       
氯化物（Cl）                                                                  0.001
硫酸盐（SO4）                                                              0.003                                       
总氮量（N）                                                                  0.001
砷（As）                                                                        0.0005
钠（Na）                                                                       0.02
铁（Fe）                                                                        0.001
重金属（以Pb计）                                                          0.001