Standardcon Pvt. Ltd. Offers Quinoline Yellow Food Colour. Standardcon Pvt. Ltd. Manufactures and exports Dyes and Pigments, Food Colours and Lake Colours for Food, Drug and Aluminium industry. The Quinoline Yellow Food Colour is prepared from a synthetic `coal tar` dye varying in colour between a dull yellow and greenish-yellow. It is mainly found in ices, scotch eggs and smoked haddock. The Quinoline Yellow Food Colour is mainly used for Drugs and Cosmetics, ices, scotch eggs and smoked haddock.