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

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
CAS Number	4553-89-3 Y
3D model (JSmol)	Interactive image
ChEMBL	ChEMBL1697823
ChemSpider	21172062
ECHA InfoCard	100.022.659
E number	E155 (colours)
PubChem CID	6536776
UNII	067L3J47ID Y
CompTox Dashboard (EPA)	DTXSID9020324
InChI 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
SMILES [Na+].[Na+].Oc3c(cc(CO)c(O)c3N=Nc2ccc(c1ccccc12)S([O-])(=O)=O)N=Nc5ccc(c4ccccc45)S([O-])(=O)=O
Properties
Chemical formula	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, Russia 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.