MDL：
--MFCD00149958

Molecular Formula：
AlNH4S2O8·12H2O；AlNH4(SO4)2·12H2O

Molecular Weight：
453.32

Alias：
銨明礬,十二水合硫酸鋁銨,鋁銨礬 Ammonium alum;Ammonium aluminum sulfate

Product order：

Name	Specifications	Packing	Price	Delivery
Aluminum ammonium sulfate	AR	500g	RMB 60.5	Consulting service

Character：
無色結(jié)晶、白色顆?；蚍勰?。有微甜的收斂味。在120℃時失去10分子結(jié)晶水，在250℃時進(jìn)一步失水，280℃以上分解。易溶于甘油，能溶于水，不溶于醇，其水溶液呈酸性反應(yīng)。熔點:94.5℃

Quality Standard：
 
   Q/(HG)SJ 767-1998
項目Item                                            分析純     化學(xué)純
                                                     (AR)       (CP)
含量Assay,%                                         ≥99.5      99.0
pH(50g/L溶液，25℃)                                  3.0-4.0    3.0-4.0
澄清度試驗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
鈉(Na)Sodium,%                                      ≤0.005     0.01
鉀(K)Potassium,%                                    ≤0.005     0.01
鈣(Ca)Calcium,%                                     ≤0.03      0.05
鐵(Fe)Iron,%                                        ≤0.0003    0.001
砷(As)Arsenic,%                                     ≤0.00005   0.0001
重金屬(以Pb計)Heavy metals,%                        ≤0.0005    0.001

項目名稱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%
重金屬(以Pb計)Heavy metals(as Pb)                   ≤0.001%
鈣(Ca)Calcium(Ca)                                   ≤0.05%
鐵(Fe)Iron(Fe)                                      ≤0.001%
鉀(K)Potassium(K)                                   ≤0.05%
鈉(Na)Sodium(Na)                                    ≤0.01%

Storage：
密封保存。
用途  軟水，焙粉，媒染劑，漿紙，鞣革，制造顏料，鍍銅，澄清劑。