硫酸高铁铵

性状描述: 无色至淡紫色透明八面形结晶，无气味，有收敛酸味。有风化性。易溶于水，几乎不溶于醇。0.1mol/L水溶液pH为2.5。230℃失去12分子结晶水。有刺激性。
密度:1.71
熔点: 37℃
折光率:1.4854

质量标准: GB/T 1279-89
项目Item                                             分析纯      化学纯
                                                      (AR)        (CP)
含量［NH₄Fe(SO₄)₂·12H₂O)Assay,%                     ≥99.0       98.0
水不溶物Insoluble matter in water,%                  ≤0.005      0.015
氯化物(Cl)Chloride,%                                 ≤0.0005     0.005
硝酸盐(NO₃)Nitrate,%                                 ≤0.01       0.02
钠(Na)Sodium,%                                       ≤0.01       0.05
镁(Mg)Magnesium,%                                    ≤0.01       0.05
钾(K)Potassium,%                                     ≤0.01       0.05
锰(Mn)Manganese,%                                    ≤0.005       --
亚铁(Fe)Ferrous,%                                    ≤0.001      0.005
铜(Cu)Copper,%                                       ≤0.002      0.01
锌(Zn)Zinc,%                                         ≤0.003      0.01
铅(Pb)Lead,%                                         ≤0.001       --


ACS级
项目名称Item                                        ACS Grade
含量[Fe(SO₄)₂NH₄·12H₂O]Assay                        98.5-102.0%
水不溶物Insoluble matter in water                    ≤0.01%
氯化物(Cl)Chloride                                   ≤0.001%
硝酸盐(NO₃)Nitrate                                   ≤0.01%
钙(Ca)Calcium                                        ≤0.01%
铜(Cu)Copper                                         ≤0.003%
镁(Mg)Magnesium                                      ≤0.005%
钾(K)Potassium                                       ≤0.005%
钠(Na)Sodium                                         ≤0.02%
锌(Zn)Zinc                                           ≤0.003%
亚铁盐(Fe²⁺)Ferrous                                  Passes test



99.99% metals basis:


外观Appearance                          Pale Violet Crystals
X-射线衍射分析X-Ray Diffraction         Conforms to Structure
纯度Purity                              ≥99.99% Based on Trace Metals Impurities
ICP Major Analysis                      Confirms iron component
总痕量金属杂质total metallic impurities   ≤200ppm by ICP Atomic emission

储存条件: 密封阴凉避光保存。

用途: 测定卤素的指示剂，银量法指示剂，媒染剂，氮肥生产中测定纯碱含铁量，分析金属盐溶液的氰化物，配高铁的标准。