| 98%: 外观Appearance                         白色粉末红外光谱测定Infrared spectrometry      和对照匹配
 纯度purity                             >98%(Titrimetry)
 熔点Melting point                      81°C - 86°C
 水分Water                              4.5-5.5%
 游离胺及胺盐                           ≤0.05%
 5%水溶液                              完全溶解
 品级Grade                               高纯级
 外观Appearance                          白色至浅黄色粉末
 红外光谱鉴别Infrared spectrometry       和对照匹配
 纯度Purity                              >99.0% (HPLC)
 纯度Purity                              >99.0% (滴定)
 熔点Melting point                       81°C - 86°C
 水分Water                               4.5 - 5.5 %
 灼烧残渣Residue on ignition             ≤ 0.1%
 硫酸盐Sulfate                           ≤ 0.05%
 不溶物Insoluble matter                  ≤ 0.1%
 铝Aluminum                              ≤ 0.0005%
 钙Calcium                               ≤ 0.0005%
 铜Copper                                ≤ 0.0005%
 铁Iron                                  ≤ 0.001%
 铅Lead                                  ≤ 0.001%
 镁MAGNESIUM                             ≤ 0.0005%
 磷酸盐PHOSPHORUS                        ≤ 0.001%
 钠SODIUM                                ≤ 0.005%
 锌ZINC                                  ≤ 0.0005%
 钾POTASSIUM                             ≤ 0.005%
 (备注:高纯级用在:光谱分析用离子缔合试剂和光谱测定金属用敏化剂、) |