3-Hexyne is the organic compound with the formula C2H5CCC2H5, simplified to C6H10. This colorless liquid is the most common of the three isomeric hexynes. Together with 2-butyne and diphenylacetylene, it serves as a reference acetylenic ligand in organometallic chemistry. 3-Hexyne is useful because the 1H NMR signals for the methylene bridges convey stereochemical information in its octahedral complexes.

CAS：928-49-4
中文别名：乙基丙基乙炔;二乙基乙炔;
英文别名：EINECS 213-173-4;3-Hexyne;2,4-hexadiyne;diethylethyne;3-HEXYNE;diethylacetylene;
分子式：C6H10
分子量：82.1436
精确质量：82.0783
Psa：0.0
Logp：1.8098

MDL号：MFCD00009381

外观与性状：无色液体
密度：0.723g/mLat 25°C(lit.)
沸点：81-82°C(lit.)
熔点：-103ºC
闪点：6°F
折射率：n20/D 1.411(lit.)
储存条件：Flammables area
蒸汽压：186 mm Hg ( 37.7 °C)

安全说明：S16; S26; S36; S62; S33; S7/9
危险类别码：R11
WGK Germany：3
海关编码：2901299090
危险品运输编码：UN 3295 3/PG 2
危险类别：3
包装等级：II
危险品标志：Xn; F

用途
用作有机合成中间体。