chemical engineering
Announce n-butyl； butyl group
Also called n-butyl, abbreviated as Bu. In butane molecule, any methyl (CH3 -) is left with univalent group after a hydrogen atom is dropped.
The structural formula is CH3-CH2-CH2-CH2 -.
As a good material for automobile inner tubes, it has excellent heat resistance, aging resistance [JP3] and excellent air tightness.
There are four isomers of butyl:
①-CH2CH2CH2CH3、②-CH（CH3）CH2CH3、③-CH2CH(CH3)2、④-C(CH3)3 [1]
