摘要：

The purpose of the present invention is to provide an azo compound that is useful as a dichroic dye to be used in a polarizing plate. The present invention provides an azo compound represented by formula (1) or a salt thereof. (In the formula, each of A<Sup>1</Sup> and A<Sup>2</Sup> is, independently of each other: a naphthyl group that may have a substituent selected from a group consisting of a hydroxy group, an alkoxy group having a sulfo group and 1 to 4 carbon atoms, and a sulfo group; or a phenyl group that may have a substituent selected from the same. Each of R<Sub>1</Sub> to R<Sub>6</Sub> is, independently of each other: a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, an alkoxy group having a sulfo group and 1 to 4 carbon atoms, a carboxy group, a hydroxy group, a halogen group; or an alkyl-substituted acylamino group having 1 to 4 carbon atoms.)

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