無(wú)色透明立方結(jié)晶或白色顆粒粉末。熔點(diǎn)  93.5℃   密度  1.64 無(wú)臭、味澀。 微溶于水，20℃時(shí)溶解度15g/100ml水，易溶于熱水，水溶液呈酸性。溶于稀酸、甘油，不溶于醇

項(xiàng)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(yàn)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(jì)）Heavy metals,%                  ≤0.0005    0.001

項(xiàng)目名稱(chēng)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(jì)）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%
 

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