Sudan — group of neutral fat-soluble dyes. General formula: C22H16N2O
There are several types with different deputies: Sudan I, Sudan II, Sudan III, Sudan IV, Sudan Para Red (Couple Red), Sudan Black. In spheres of economy are used by production of diesel fuel, oils, coloring of plastic and polymers, in light industry for coloring of fabrics, and also when carrying out biochemical researches for coloring of preparations, and treat nonfood dyes. Are often used at falsification of spices and spices, and also the products of their processing, dietary supplement to food made with use of spices and spices, and other foodstuff which part spices and spices, for the purpose of giving of more intensive coloring to them are. In chemistry and medicine it is used for high-quality definition of fats and painting of histologic tests.
• Sudan I — dye of yellow color.
• Sudan II — dye of orange color.
• Sudan III — dye of orange-red color.
• Sudan IV — dye of dark red color.