0102 ib0304 ib05
0102 ib0304 ib05
High Purity Liquefied Petroleum Gas (C4H8) Fluorocarbon Gases
Vim li cas ho tsis kam lees? Nug peb tam sim no!
Tiv tauj pebSpecifications
| Purity (GC cheeb tsam%) | 99.83% | 99.0% min |
| 1-Butene | 0.03% | qhia |
| cis-2-Butene | 99.83% | qhia |
| Trans-2-Butene | 0.14% | qhia |
| 1,2-Butadiene IB | qhia | |
| 1-Butyne | qhia |
Cov ntaub ntawv technical
| Tshuaj formula | C4H8 |
| Molar loj | 56,106 g / mol |
| Qhov ntom | 0.641 g / mlcis3.7 ° C) |
| Melting point | −138.9 °C (−218.0 ° F; 134.2 K) (cis) |
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.
piav 2