Brown HT

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Brown HT
Brown HT structure.png
IUPAC name
Disodium 4-[(2E)-2-[(5Z)-3-(hydroxymethyl)-2,6-dioxo-5-[(4-sulfonatonaphthalen-1-yl)hydrazinylidene]-1-cyclohex-3-enylidene]hydrazinyl]naphthalene-1-sulfonate
Other names
Chocolate Brown HT, Food Brown 3, C.I. 20285, E155
ChEMBL ChEMBL1697823
ChemSpider 21172062
Jmol interactive 3D Image
PubChem 6536776
Molar mass 652.56 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Brown HT, also called Chocolate Brown HT, Food Brown 3, and C.I. 20285, is a brown synthetic coal tar diazo dye.

When used as a food dye, its E number is E155. It is used to substitute cocoa or caramel as a colorant. It is used mainly in chocolate cakes, but also in milk and cheeses, yogurts, jams, fruit products, fish, and other products.[1] It may provoke allergic reactions in asthmatics, people sensitive to aspirin, and other sensitive individuals, and may induce skin sensitivity.[citation needed]

It is one of the food colorings that the Hyperactive Children's Support Group recommends be eliminated from the diet of children.[citation needed] It is banned in Austria, Belgium, Denmark, France, Germany, United States, Norway, Switzerland, and Sweden.[2]


  1. ^ Brown HT, Report of the 33rd Session of the Codex Committee on Food Additives
  2. ^ E155, UK Food Guide