| 中文名称 | Beryllium hydride |
|---|---|
| 中文同义词 | |
| 英文名称 | Beryllium hydride |
| 英文同义词 | Beryllium hydride.;beryllium(+2) cation: hydrogen(-1) anion;Dihydrogen beryllium salt;beryllium dihydride |
| CAS号 | 7787-52-2 |
| 分子式 | BeH2 |
| 分子量 | 11.03 |
| EINECS号 | |
| 相关类别 | |
| Mol文件 | 7787-52-2.mol |
| 结构式 |  |
Beryllium hydride 性质
| 密度 | 0.650 |
|---|---|
| 溶解度 | 与H2O反应；不溶于乙醚、甲苯 |
| 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] |
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
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/立方米安全信息
| 危险品运输编号 | 1409 |
|---|---|
| 危险等级 | 4.3 |
| 包装类别 | II |