Explanatory notes
… colouring matter put up in forms or packings for retail sale is classified in heading 32.12 (see Part (C) of the … e.g., azines (indulines, nigrosines, eurhodines, safranines, etc.), oxazines (gallocyanines, etc.) and … put up in the form of mixtures of stabilised diazonium salts and couplers which produce an insoluble azo dye on the …