Introduction+and+The+Issue

hii all .. this page is introduction about sunset yellow and the issue

do you know sunset yellow ?



Sunset yellow is a synthetic yellow azo dye, manufactured from aromatic hydrocarbons from petroleum. Sunset Yellow is a dye in the yellow spectrophotometer. . Azo compound are compound bearing the functional group R-N=N-R', in which R and R' can be either aryl or alkyl. beside that sunsetyellow is a Sunset Yellow FCF is a colourant that may be added to foods. It has E number E110. It is an azo yellow dye useful in fermented foods which must be heat treated.The chemical name of this compound is disodium 2-hydroxy-1-(4-sulfonatofenilazo) naphthalene-6-sulfonic acid with chemical formula C16H10N2Na2O7S2. This compund has amolecular weight of 452.37. This compound is soluble in water and has a melting point > 3000 C. These dyes have a maximum wavelenght at 485 nm. In the solid phase, theabsorbance of this dyes is 487 nm.

Sunset Yellow can be found in oranges, marzipan, Swiss roll, apricot jam, citrus marmalade, lemon Kurds, sweeteners, cheese, soda, and others. sunset yellow is useful in fermented foods which must be heat treated. It may be found in orange sodas, orange jelly , marzipan , swiss rolls , apricots jam , citrus marmalade, lemon, curd , sweets , hot chocolate mix and packet soups, trifle mix, breadcrumbs, snack chips , chees sauce mixes, and other products with artifical yellow, orange or red colours.

Sunset Yellow is often used in conjuntion with E123 Amaranth, in order to produce a brown in both chocolates and caramel. At high concentrations, Sunset Yellow in solution with water undergoes aphase change from an isotropic liquid crystal. this occurs between 0,8 M 0,9 M at room temperature.

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