甲䐶[1](formazan),有機化合物。分子式為:CN4H4,結構為:NH2-N=CH-N=NH。
甲䐶類化合物可由芳香胺經重氮化後在鹼性溶液中與芳腙偶聯而得。也可由四氮唑生成的四級銨鹽被還原得到。
甲䐶染料是一類具有甲䐶結構的染料,其中以甲䐶金屬絡合染料為主,適用於錦綸、絲、毛的染色。
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