六水合硫酸铁（II）铵

性状：浅蓝绿色结晶，在空气中逐渐被氧化，溶于水，不溶于醇。室温下密闭于干燥处，避光。吸入后呼吸新鲜空气，接触后用水冲洗，吞食后饮水催吐，就医。不燃物。

技术要求

含量[（NH4）2Fe(SO4)2·6H2O]                                                   ≥99.5%

pH值（50g/L,25°C）                                                                    3-5

水不溶物                                                                                       ≤0.005%

氯化物（Cl）                                                                                 ≤0.001%

磷酸盐（PO4）                                                                             ≤0.0005%

锰（Mn）                                                                                      ≤0.05%

高铁（Fe）                                                                                    ≤0.01%

铜（Cu）                                                                                       ≤0.002%

锌（Zn）                                                                                        ≤0.005%

铅（Pb）                                                                                        ≤0.002%

氨水不沉淀物（以硫酸盐计）                                                           ≤0.1%