無色粒狀結(jié)晶，易溶于水和醇，在潮濕空氣中易潮解。

品級Grade                               分析純  
                                        （AR）
外觀Appearance                          white crystals or crystalline powder
紅外光譜鑒別Infrared spectrometry       Conforms to Structure
純度Purity                              ≥99.0% （T）  
氯chloride （Cl-）:                       ≤50 ppm
硫酸根sulfate （SO42-）:                  ≤50 ppm
  Ca:                                   ≤50 ppm
  Cd:                                   ≤5 ppm
  Co:                                   ≤5 ppm
  Cr:                                   ≤5 ppm
  Cu:                                   ≤5 ppm
  Fe:                                   ≤10 ppm
  K:                                    ≤10 ppm
  Mg:                                   ≤5 ppm
  Mn:                                   ≤5 ppm
  Na:                                   ≤10 ppm
  Ni:                                   ≤5 ppm
  Pb:                                   ≤10 ppm
  Zn:                                   ≤5 ppm

 

用于鑭鎢、鑭鉬陰極材料，三元催化劑，石油化工，汽燈紗罩添加劑，硬質(zhì)合金，難熔金屬等其它工業(yè)。