To provide a method for easily producing an acetylene alcohol having a comparatively large molecular weight and a complicated structure.

The acetylene compound is represented by general formula (1) (wherein, R1is a 4-10C monovalent hydrocarbon wherein the carbon bonding to a silicon atom is a tertiary carbon; R2and R3are each a 1-4C alkyl group or a monovalent group including a fluoroalkyl group represented by Rf-Q-; Rf is a 3-100C perfluoroalkyl group which may include an ether bond in the chain and may be branched; Q is a 2-10C divalent group which may include nitrogen, oxygen or sulfur in the chain; and n is 0 or 1). The new acetylene compound is useful as a nonionic surfactant, an intermediate for a compound, and a reaction controller of hydrosilylation.

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