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CAS: 4553-89-3
MF: C27H18N4Na2O9S2
MW: 652.56276
EINECS: 224-924-0
E 155, 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.
E 155 is used to substitute cocoa or caramel as a colorant.
E 155 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.
E 155 is approved for use by the European Union.
E 155 is banned in Australia, Austria, Belgium, Denmark, France, Germany, Norway, Sweden, Switzerland, and the United States.
Since E 155 is an azo dye, it may elicit intolerance in people intolerant to salicylates. Additionally, E 155 is a histamine liberator, and may intensify symptoms of asthma.
In combination with benzoates, E 155 is also implicated in hyperactivity in children.
E 155 is a synthetic dye that is used in food, cosmetics, and pharmaceuticals.
E 155 is a carcinogen and has been shown to have alerting and activating effects on the central nervous system.
E 155 has been shown to be an effective additive for high-performance liquid chromatography due to its labile properties.
A study has also demonstrated that E 155 can mediate the production of reactive oxygen species, which are known for their role in cancer and other diseases.
E 155 also has a statistically significant effect on betaine levels in rats, leading to increased levels of oxidative stress.
E 155 Chemical Properties
Colour Index No.: 20285
Food Colour No.: Brown 3
CAS NO.: 4553-89-3
E.E.C. No.: E-155
Total Dye Content Corrected for Sample (Min.): 70%
Volatile Matter (chloride & sulphate) (Max): 30%
Solubility In Water (20 c): 120 gram / litre
Combined Ether Extract. (Max): 0.20%
Water Insoluble (Max): 0.20%
Class: Bisazo
Light Stability: 4
Heat Stability (100 c): 5
Alkali Stability: 4
Subsidiary Dyes (Max): 10.00%
Dyes Intermediate (Max): 0.70%
Lead: < 10 ppm
Arsenic: < 1 ppm
Mercury: < 1 ppm
Heavy Metals: < 20 ppm
E 155 soluble in water for brown.
The strong sulfuric acid for red purple, diluted chocolate brown for red precipitate to brown precipitation and the solution.
E 155's water solution and strong hydrochloric acid for dark chocolate brown precipitation and the solution; Add sodium hydroxide solution for product red.
Synonyms
4553-89-3
Brown HT
disodium;4-[2-[3-(hydroxymethyl)-4,6-dioxo-5-[(4-sulfonatonaphthalen-1-yl)hydrazinylidene]cyclohex-2-en-1-ylidene]hydrazinyl]naphthalene-1-sulfonate
Chocolate brown HT
Disodium 4,4'-[[2,4-dihydroxy-5-(hydroxymethyl)-1,3-phenylene]bis(azo)]bisnaphthalene-1-sulphonate
Disodium;4-[(2Z)-2-[(5Z)-3-(hydroxymethyl)-4,6-dioxo-5-[(4-sulfonatonaphthalen-1-yl)hydrazinylidene]cyclohex-2-en-1-ylidene]hydrazinyl]naphthalene-1-sulfonate
BCP27999
Certicol Brown RS
Chocolate brown HT
C.I. Food Brown 3
Brown HT
C.I. 20285
067L3J47ID
1-Naphthalenesulfonic acid, 4,4'-((2,4-dihydroxy-5-(hydroxymethyl)-1,3-phenylene)bis(azo))bis-, disodium salt
4553-89-3
Certicol Brown N Extra
