Beryllium Compounds
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Beryllium hydride

Beryllium hydride,7787-52-2,结构式
Beryllium hydride
  • CAS号:7787-52-2
  • 英文名:Beryllium hydride
  • 中文名:
  • CBNumber:CB41245583
  • 分子式:BeH2
  • 分子量:11.03
  • MOL File:7787-52-2.mol
Beryllium hydride化学性质
  • 密度 :0.650
  • 溶解度 :reacts with H2O; insoluble in ethyl ether, toluene
  • 形态 :white amorphous solid
  • 颜色 :White
  • 水溶解性 :reacts slowly with H2O, rapidly with dilute acids evolving H2(g) [MER06]
安全信息
  • 危险品运输编号 :1409
  • 危险等级 :4.3
  • 包装类别 :II

Beryllium hydride性质、用途与生产工艺

  • Beryllium Compounds In the mid-1960s, considerable interest in beryllium hydride was generated by its potential use with ammonium perchlorate oxidizer in solid propellants for rockets. Beryllium hydride, BeH2 , was prepared by action of ethereal lithium-aluminum hydride with beryllium chloride. A white powder resulted from which the complete removal of ether was difficult. The hydride is not stable above 125 °C (255 °F), decomposing into beryllium and hydrogen.
    Beryllium hydride is a three-dimensional polymer, considerably ionic in character and containing Be2+ and H- ions. Alternatively, it may be considered to be an electron-deficient molecule, similar to beryllium chloride and the beryllium alkyls, with hydrogen bridges between the two beryllium atoms (BeH2Be).
    Three-dimensional molecule of beryllium hydride
    Three-dimensional molecule of beryllium hydride
  • 类别 遇水燃烧物品
  • 毒性分级 高毒
  • 爆炸物危险特性 当热至220℃以上时释放爆炸性氢气;与水,甲醇,稀酸反应激烈,释放爆炸性氢气
  • 可燃性危险特性 受热分解有毒铍氧化物烟雾; 因易放出易燃氢气, 能形成危险火灾
  • 储运特性 通风低温干燥; 与库房食品原料,酸和甲醇分开存放
  • 灭火剂 干粉,泡沫,二氧化碳
  • 职业标准 TWA 0.002 毫克(铍)/立方米; STEL 0.005 毫克/立方米
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