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High Purity Trans-2-butene Gas (C4H8) Fluorocarbon Gases

  • DOT Shipping npe Trans-2-butene
  • DOT Classification 2.1
  • DOT Label Combustible Gas
  • Tus lej THIAB 1075
  • CAS Nr. 624-64-6
  • DISS/JIS/DIN477 510/NO.4/NWS 1
  • Shipped as Liquefied Gas

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Specifications

Purity (GC cheeb tsam%) 99.81% > 99%
1-Butene qhia
cis-2-Butene 0.10% qhia
Trans-2-Butene 99.81% > 99%
1,2-Butadiene IB qhia
1-Butyne qhia
Butane 0.07% qhia
Lwm yam qhia

Cov ntaub ntawv technical

Tshuaj formula C4H8
Molar loj 56,106 g / mol
Qhov ntom 0.626 g / ml (trans, 0.9 ° C)
Melting point -105.5 ° C (hli)

cov khoom piav qhia

Tab sis-2-ene yog acyclic alkene nrog plaub carbon atoms. Nws yog qhov yooj yim tshaj plaws alkene nthuav tawm cis / trans-isomerism (tseem hu ua (E / Z)-isomerism); uas yog, nws tshwm sim li ob geometric isomers cis-tab sis-2-ene ((Z)-tab sis-2-ene) thiab trans-but-2-ene ((E)-but-2-ene).

Ob lub isomers yog qhov nyuaj heev los cais los ntawm distillation vim qhov sib thooj ntawm lawv cov ntsiab lus kub (~ 4 ° C rau cis thiab ~ 1 ° C rau trans [5]). Txawm li cas los xij, kev sib cais yog qhov tsis tsim nyog nyob rau hauv feem ntau cov chaw lag luam, vim tias ob qho tib si isomers coj zoo sib xws hauv feem ntau ntawm cov kev xav tau. Ib qho kev lag luam tab sis-2-ene sib tov yog 70% (Z)-tab sis-2-ene (cis-isomer) thiab 30% (E)-tab sis-2-ene (trans-isomer). Butane thiab but-1-ene yog ib qho impurities, tam sim no ntawm 1% los yog ntau tshaj nyob rau hauv industrial mixs, uas kuj muaj me me ntawm isobutene, butadiene thiab butyne.

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