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Gas ti nw Trans-2-butene (C4H8) Fluorocarbon Gases
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Pe waAwọn pato
| Mimo(Agbegbe GC%) | 99.81% | > 99% |
| 1-Butene | iroyin | |
| cis-2-Butene | 0.10% | iroyin |
| kabo-2-Butene | 99.81% | > 99% |
| 1,2-Butadiene | iroyin | |
| 1-Butyne | iroyin | |
| Butane | 0.07% | iroyin |
| Omiiran | iroyin |
Imọ Alaye
| Ilana kemikali | C4H8 |
| Iwọn Molar | 56,106 g / mol |
| iwuwo | 0.626 g/ml (trans, 0.9°C) |
| Ojuami yo | -105.5C (trans) |
ọja apejuwe
Ṣugbọn-2-ene jẹ alkene acyclic pẹlu awọn ọta erogba mẹrin. O jẹ alkene ti o rọrun julọ ti o nfihan cis / trans-isomerism (ti a tun mọ ni (E / Z) -isomerism); eyini ni, o wa bi meji geometric isomers cis-but-2-ene ((Z) -ṣugbọn-2-ene) ati trans-sugbon-2-ene ((E) -ṣugbọn-2-ene).
Awọn isomers meji naa nira pupọ lati yapa nipasẹ distillation nitori isunmọtosi awọn aaye sisun wọn (~ 4 ° C fun cis ati ~ 1 °C fun trans[5]). Sibẹsibẹ, iyapa ko ṣe pataki ni ọpọlọpọ awọn eto ile-iṣẹ, bi awọn isomers mejeeji ṣe huwa bakanna ni pupọ julọ awọn aati ti o fẹ. Apapọ ile-iṣẹ aṣoju ṣugbọn-2-ene jẹ 70% (Z) - ṣugbọn-2-ene (cis-isomer) ati 30% (E) - ṣugbọn-2-ene (trans-isomer). Butane ati but-1-ene jẹ awọn idoti ti o wọpọ, ti o wa ni 1% tabi diẹ sii ni awọn akojọpọ ile-iṣẹ, eyiti o tun ni awọn iwọn kekere ti isobutene, butadiene ati butyne.
apejuwe2