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
ChEMBL	ChEMBL1697823
ChemSpider	21172062
Jmol interactive 3D	Image
PubChem	6536776
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 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.

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

References

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