性状  无色透明立方结晶或白色粉末。有毒。能溶于盐酸、硝酸、氢氟酸和氯化铵溶液，微溶于水。中等毒，半数致死量(大鼠，经口)250mg/kg。
相对密度                 4.83
熔点                     1353℃
沸点                     2260℃
折光率dD25                1.471
   
质量标准  
项目                                  分析纯          化学纯
                                       (AR)            (CP)
含量Assay                             ≥99.0          ≥98.0
氯化物Chloride（Cl）                  ≤0.005         ≤0.01
盐酸溶解试验Solubilization in HCl      合格            合格
硅silicon（Si）                       ≤0.01          ≤0.04
铁iron（Fe）                          ≤0.003         ≤0.005
重金属heavy metal（以Pb计）           ≤0.003         ≤0.005
氮化合物nitrogen compound（以N计）    ≤0.005         ≤0.02
硫酸溶解物dissolved matter in H2SO4   ≤0.20          ≤0.60
灼烧失重calcination loss              ≤2.0           ≤2.0

99.99% metals basis:

外观Appearance                          白色粉末
X-射线衍射分析X-Ray Diffraction         Conforms to standard
纯度Purity                              ≥99.99% Based on Trace Metals Impurities of ICP
ICP Assay                               Confirms Barium component
干燥损失Loss on ignition                <0.5% (1 Hours, 1100 °C)
痕量金属分析Trace Metal Analysis        ≤200ppm by ICP Atomic emission

99.999% metals basis:

外观Appearance                          白色粉末
X-射线衍射分析X-Ray Diffraction         Conforms to standard
纯度Purity                              ≥99.999% Based on Trace Metals Impurities of ICP
ICP:                                    Confirms Barium Component Confirmed
痕量金属分析Trace Metal Analysis        ≤20ppm by ICP Atomic emission
(Ni、Rb、Cs、Mg、Ca、Sr、Zr、Hf、Nb、In、Cr、W、Pb、Sb、Bi、Fe、Sm、Yb)
贮存  密封保存。
用途  防腐剂。金属热处理。陶瓷。搪瓷。制造玻璃。冶金。仪表等工业。
联合国编号  1564
Risk：  R20/22-
Safety :  S28-