Brown HT

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Brown HT
Skeletal formula of Brown HT
Space-filling models of the ions in Brown HT
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
3D model (JSmol)
ECHA InfoCard 100.022.659 Edit this at Wikidata
E number E155 (colours)
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 is approved for use by the European Union.[2] It is banned in Australia, Austria, Belgium, Denmark, France, Germany, Norway, Sweden, Switzerland, and the United States.[3]


  1. ^ Brown HT, Report of the 33rd Session of the Codex Committee on Food Additives
  2. ^ "EU Approved additives and E Numbers". UK Food Standards Agency.
  3. ^ E155, UK Food Guide