淡蓝绿色结晶或粉末。密度:1.86  熔点:100 °C (dec.)(lit.)在空气中逐渐风化及氧化。能溶于水，不溶于乙醇。浅蓝绿色结晶或粉末，对光敏感.
 

项目Item                                                                          分析纯     化学纯
                                                                                              (AR)       (CP)
含量［Fe(NH4)2(SO4)2·6H2O)Assay,%                     ≥99.5     99.0
pH(50g/L溶液，25℃)                                                         3-5       3-5
水不溶物Insoluble matter in water,%                          ≤0.005    0.02
氯化物(Cl)Chloride,%                                                      ≤0.001    0.005
磷酸盐(PO4)Phosphate,%                                           ≤0.0005   0.002
锰(Mn)Manganese,%                                                        ≤0.05       --
高铁(Fe)Ferric,%                                                            ≤0.01     0.02
铜(Cu)Copper,%                                                             ≤0.002    0.01
锌(Zn)Zinc,%                                                                      ≤0.005    0.02
铅(Pb)Lead,%                                                                    ≤0.002    0.004
氨水不沉淀物(以硫酸盐计)Substances not
precipitated by ammonia,%                                                   ≤0.1      0.2

ACS级
项目名称Item                                          ACS Grade
含量[Fe(NH4)2(SO4)2·6H2O]Assay             98.5-101.5%
水不溶物Insoluble matter in water               ≤0.01%
磷酸盐(PO4)Phosphate                                   ≤0.003%
钙(Ca)Calcium(Ca)                                        ≤0.005%
铜(Cu)Copper(Cu)                                           ≤0.003%
镁(Mg)Magnesium(Mg)                                    ≤0.002%
钾(K)Potassium(K)                                       ≤0.01%
钠(Na)Sodium(Na)                                        ≤0.02%
锌(Zn)Zinc(Zn)                                             ≤0.003%
高铁(Fe3+)Ferric ion                                   ≤0.01%

危险品标志                      Xi 
危险类别码                     36/37/38 
安全说明                        26-36-37/39 
WGK Germany             1
RTECS                         BR6500000
F                                    8-10-23 
海关编码                     28429090

用作分析试剂，测定卤素时用作指示剂
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