Amanil Sky Blue 6B, Amanil Sky Blue FF, Direct Blue 1 is an organic compound that is one of many azo dyes.

This salt is used as a substantive dye for textiles with high contents of cellulose, i.e. cotton.

It is prepared by the azo coupling of the aminonaphthalene and diazotized derivative of o-dianisidine.

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