商品名：硫酸铝铵

别 名：硫酸铝铵 ,铵明钒,十二水合硫酸铝铵,铝铵矾；Aluminum ammonium sulfate dodecahydrate,Ammonium alum,Ammonium aluminum sulfate

英文名：Aluminum ammonium sulfate

产 地：湖南

Cas号：7784-26-1

MDL：MFCD00149958

Beilstein：

EINECS：232-055-3

分子结构：

分子式：AlNH4S2O8•12H2O； AlNH4(SO4)2•12H2O

分子量：453.3200

备注：

性状：无色结晶、白色颗粒或粉末。味微甜而涩。在120℃时失去10分子结晶水,约250℃时变为无水品,280℃以上分解。1G溶于7ml水、0.5ml沸水。易溶于甘油,几乎不溶于乙醇,水溶液对石蕊呈酸性。0.05mol/L溶液的pH为4.6。相对密度1.65。熔点94.5℃。折光率1.459。

质量标准：Q/(HG)SJ 767-1998
项目Item                                            分析纯     化学纯
                                                     (AR)       (CP)
含量Assay,%                                         ≥99.5      99.0
pH(50g/L溶液，25℃)                                  3.0-4.0    3.0-4.0
澄清度试验Clarity                                    合格       合格
水不溶物Insoluble matter in water,%                 ≤0.005     0.01
氯化物(Cl)Chloride,%                                ≤0.0005    0.002
钠(Na)Sodium,%                                      ≤0.005     0.01
钾(K)Potassium,%                                    ≤0.005     0.01
钙(Ca)Calcium,%                                     ≤0.03      0.05
铁(Fe)Iron,%                                        ≤0.0003    0.001
砷(As)Arsenic,%                                     ≤0.00005   0.0001
重金属(以Pb计)Heavy metals,%                        ≤0.0005    0.001

项目名称Item                                        ACS Grade
含量Assay                                           98.0-102.0%
不溶物Insoluble matter                              ≤0.005%
氯化物(Cl)Chloride(Cl)                              ≤0.001%
重金属(以Pb计)Heavy metals(as Pb)                   ≤0.001%
钙(Ca)Calcium(Ca)                                   ≤0.05%
铁(Fe)Iron(Fe)                                      ≤0.001%
钾(K)Potassium(K)                                   ≤0.05%
钠(Na)Sodium(Na)                                    ≤0.01%




99.99% metals basis:


外观Appearance                          White Powder, Crystals
X-射线衍射分析X-Ray Diffraction         Conforms to standard
纯度Purity                              ≥99.99% Based on Trace Metals Impurities of ICP
ICP Assay                               Confirms Aluminum component
Aluminum(Complexometric EDTA)           5.8- 6.1 %
痕量金属分析total metallic impurities   ≤200ppm by ICP Atomic emission



99.999% metals basis:


外观Appearance                          White Powder, Crystals
X-射线衍射分析X-Ray Diffraction         Conforms to standard
纯度Purity                              ≥99.999% Based on Trace Metals Impurities of ICP
ICP Assay                               Confirms Aluminum component
Aluminum(Complexometric EDTA)           5.8- 6.1 %
痕量金属分析total metallic impurities   ≤20ppm by ICP Atomic emission

存储：密封阴凉干燥保存。

用途：分析试剂。媒染剂。软水，净水剂。用于制造颜料。镀铜。澄清剂。焙粉，浆纸，鞣革。

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