Brown HT

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

Brown HT
Skeletal formula of Brown HT
Space-filling models of the ions in Brown HT
Names
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
Identifiers
3D model (JSmol)
ChEMBL
ChemSpider
ECHA InfoCard 100.022.659
E number E155 (colours)
UNII
  • InChI=1/C27H20N4O9S2.2Na/c32-14-15-13-22(30-28-20-9-11-23(41(35,36)37)18-7-3-1-5-16(18)20)27(34)25(26(15)33)31-29-21-10-12-24(42(38,39)40)19-8-4-2-6-17(19)21;;/h1-13,32-34H,14H2,(H,35,36,37)(H,38,39,40);;/q;2*+1/p-2
    Key: BIRIBMFCDVVRKL-NUQVWONBAS
  • [Na+].[Na+].Oc3c(cc(CO)c(O)c3N=Nc2ccc(c1ccccc12)S([O-])(=O)=O)N=Nc5ccc(c4ccccc45)S([O-])(=O)=O
Properties
C27H18N4Na2O9S2
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

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 can also be found in desserts, cookies, candy, cheeses, teas, yogurts, jams, chocolate drinks, ice creams, fruit products, fish, wafers, breakfast cereals, and other products.[1][2]

It is approved for use by the European Union.[3] It is banned in Australia, Austria, Belgium, Denmark, France, Germany, Norway, Sweden, Switzerland, and the United States.[4]

References
  1. "Brown HT (E155) – Overview, Uses, Side Effects & More". HealthKnight. 10 May 2022. Retrieved 2022-05-21.
  2. Brown HT, Report of the 33rd Session of the Codex Committee on Food Additives.
  3. "EU Approved additives and E Numbers". UK Food Standards Agency.
  4. E155 Archived 2021-03-23 at the Wayback Machine, UK Food Guide.
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