isobutane(redirected from E943b)
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(Chemistry) chem a colourless gaseous hydrocarbon that is an isomer of butane and which is used as a fuel and a refrigerant. Formula: (CH3)3CH
i•so•bu•tane(ˌaɪ səˈbyu teɪn, -byuˈteɪn)
a colorless, flammable gas, C4H10, used as a fuel, a refrigerant, and in the manufacture of gasoline by alkylation.