白色晶体粉末。 

项目                                              超纯级
纯度assay                                      ≥99.0%(T)
水分Moistrue                                  ≤0.5%
铁Iron(Fe)                                      <5PPM 
氯Chloride                                      ≤0.005%
硫酸根Sulfate                                  ≤0.005%
灼烧残渣Residue On Ignition           ≤0.1%
重金属Heavy Metals （as Pb)          <5PPM
pH(1% in H2O)                               4.0-5.5(20℃) 
A₂₆₀(0.1M,water):                           ≤0.025
A₂₈₀(0.1M,water):                           ≤0.025

项目                                          生化试剂级
                                                       (BC)
纯度assay                                        ≥99%(T)
灼烧残渣Residue On Ignition            ≤0.1%
重金属Heavy Metals （as Pb)           <10PPM