2013年9月27日星期五

Hexane (己烷)

Molecular formula: C6H14

Appearance: Colorless liquid (无色液体)

1618090305= 1813 D.IE / 1107 (04212025_16010904) = 1813 FGI.BE / 04182113 (04212025_16010904 - BXI_1209200518_160518_180503151804_04182113)

Density: 0.6548 g ML^-1;密度:0.66 (水=1)

Melting point: -96 - -94 deg C

Boiling point: 68 - 69 deg C;沸点:68.7 deg C

Flash point: - 26.0 deg C;闪火点:- 21.7 deg C

水溶解度:不溶


Latent Heat of Evaporation = 365 kJ/kg = 157 Btu/Ib
  • 1 kJ/kg = 0.43 Btu/Ibm = 0.24 k cal/kg
  • The latent heat of evaporation is based on the fluids boiling point temperatures at atmospheric pressure.

危害
  • F = 易燃 (其液体和蒸汽高度易燃,会累积静电。蒸汽比空气重,会传播至远处,遇火源可能造成回火。液体会浮在水面而扩散火势)
  • Xn = 有毒性
  • N = 对环境有害
  • 具有一定的毒性,会通过呼吸道,皮肤等途径进入人体,长期接触可导致人体头痛,头晕,乏力,四肢麻木等慢性中毒症状,严重的可导致晕倒,神志丧失,甚至死亡。
  • Case study: Hexane was used as a replacement for alcohol for cleaning the screens of iPhone in China. 

Uses
  • used in the formulation of glues for shoes, leather products, and roofing.
  • used to extract cooking oils from seeds
  • a typical laboratory use of hexane is to extract oil and grease contaminants from water and soil for analysis.

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