Brown HT

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 ;
3D model (JSmol)	Interactive image;
ChEMBL	ChEMBL1697823;
ChemSpider	21172062;
ECHA InfoCard	100.022.659
E number	E155 (colours)
PubChem CID	6536776;
UNII	067L3J47ID ;
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

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 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]

References

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