| Section2 = | Section4 = | Section7 =, | SPhrases =,,,, | FlashPt = flammable gas }} | Section8 = }} Neopentane, also called dimethylpropane or 2,2-dimethylpropane,'s a double-branched-chain alkane with five carbon atoms. Neopentane's an extremely flammable gas at room temperature and pressure which can condense into a highly volatile liquid on a cold day, in an ice bath, or when compressed to a higher pressure. Nomenclature IUPAC nomenclature retains the trivial name neopentane. Dimethylpropa… (More on Neopentane)