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 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。