(2H)水素

危険有害性情報のコード(GHS)

• 絵表示(GHS)

  

• 注意喚起語

  Danger

• 危険有害性情報

  H220：極めて可燃性/引火性の高いガス

  H280：加圧ガス；熱すると爆発のおそれ

• 注意書き

  P210：熱/火花/裸火/高温のもののような着火源から遠ざ けること。－禁煙。

  P377：漏洩ガス火災の場合：漏えいが安全に停止されな い限り消火しないこと。

  P381：安全に対処できるならば着火源を除去すること。

  P410+P403：日光から遮断し、換気の良い場所で保管するこ と。

(2H)水素 化学特性,用途語,生産方法

• 化学的特性

  col gas [CRC10]Density, g/L: 0.123 [CRC10]

• 合成

  About 150 ml. of n-butyl ether, dried over Na, is distilled into the reaction flask and 5.75 g. of LiAlH4 (40% excess) is then added under a nitrogen blanket. The mixture is frozen with liquid N s. The apparatus is then evacuated, and the flask contents are brought to boiling by careful heating. After 1.5 hours, it is again cooled with liquid Ns , the evacuation is repeated, and 5 ml. of 99.5% D2O is added to the solidified mixture, using a hypodermic syringe to pierce the rubber cap. Because of the low reaction temperature, the flask becomes coated with ice on the outside. By repeated immersion in liquid N3, the temperature is controlled so that the ice on the outer wall of the flask does not melt. As soon as the reaction subsides somewhat, two additional portions of 6.5 ml. of DSO each are added (for a total of 18 ml. or 150% excess). The yield is 10 liters of HD. The purity is 97-99%.
  LiAlH₄ + 4D₂O = LiOD + Al(OD)₃ + 4HD
  

(2H)水素 生産企業

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13983-20-5, (2H)水素 キーワード