硫酸铝铵

无色透明立方结晶或白色颗粒粉末。熔点  93.5℃   密度  1.64 无臭、味涩。 微溶于水，20℃时溶解度15g/100ml水，易溶于热水，水溶液呈酸性。溶于稀酸、甘油，不溶于醇

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%
 

用作净水凝聚剂、印染媒染剂、制革铝鞣剂、纸张上浆剂、黄色玻璃着色剂、医药收敛剂及食品膨松剂等