7787-52-2
英文名称
Beryllium hydride
CAS
7787-52-2
分子式
BeH2
分子量
11.03
MOL 文件
7787-52-2.mol
结构式
基本信息
英文别名
Beryllium hydride.
beryllium dihydride
Dihydrogen beryllium salt
beryllium(+2) cation: hydrogen(-1) anion
beryllium dihydride
Dihydrogen beryllium salt
beryllium(+2) cation: hydrogen(-1) anion
物理化学性质
| 密度 | 0.650 |
| 溶解度 | reacts with H2O; insoluble in ethyl ether, toluene |
| 形态 | 白色无定形固体 |
| 颜色 | 白色 |
| 水溶解性 | reacts slowly with H2O, rapidly with dilute acids evolving H2(g) [MER06] |
安全数据
| 危险品运输编号 | 1409 |
| 危险等级 | 4.3 |
| 包装类别 | II |
常见问题列表
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