butane(redirected from E943a)
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Related to E943a: E943b, E944, E555
an aliphatic hydrocarbon, C4H10, from petroleum; used in pharmacy as an aerosol propellant.
C4H10; a gaseous hydrocarbon present in natural gas; two isomers are known, both of which are anesthetically active: N-butane is CH3(CH2)2CH3 and isobutane is CH3CH(CH3)CH3 (or 2-methylpropane).
butane/bu·tane/ (bu´tān) an aliphatic hydrocarbon from petroleum, occurring as a colorless flammable gas; used in pharmacy as an aerosol propellant.
a colorless petroleum-based gas. It is the fourth member of the paraffin series of hydrocarbons.
butaneA linear (unbranched) alkane hydrocarbon which is a flammable gas at room temperature (boiling point, 0ºC/30–34ºF).
Lighter fluid, refrigerant.
Euphoria, drowsiness, narcosis, arrhythmias, memory loss, frostbite, death due to asphyxiation and ventricular fibrillation.
A gaseous hydrocarbon present in natural gas.
an aliphatic hydrocarbon, C4H10, from petroleum.