| Azorubine | |
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disodium 4-hydroxy-2-[(E)-(4-sulfonato-1-naphthyl)diazenyl]naphthalene-1-sulfonate |
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Other names
carmoisine, |
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| Identifiers | |
| CAS number | 3567-69-9 |
| PubChem | 6321394 |
| ChemSpider | 11588223 |
| UNII | DR4641L47F |
| EC number | 217-699-5 |
| KEGG | C19358 |
| Jmol-3D images | Image 1 Image 2 |
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| Properties | |
| Molecular formula | C20H12N2Na2O7S2 |
| Molar mass | 502.44 |
| Appearance | red powder |
| Melting point |
>300 C |
| Solubility in water | Soluble (120g/l) |
| (verify) (what is: /?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
Azorubine, carmoisine, Food Red 3, Azorubin S, Brillantcarmoisin O, Acid Red 14, or C.I. 14720 is a synthetic red food dye from the azo dye group. It usually comes as a disodium salt. It is a red to maroon powder. It is used for the purposes where the food is heat-treated after fermentation. It has E number E122. Some of the foods it can be present in are blancmange, marzipan, Swiss roll, jams, preserves, yogurts, jellies, breadcrumbs, and cheesecake mixes. It is also present in Oraldene Mouthwash.
Chemical names: 2-(4-Sulfo-1-naphthylazo)-1-naphthol-4-sulfonic acid disodium; 4-Hydroxy-3-((4-sulpho-1-naphthalenyl)azo)-1-naphthalenesulphonic acid disodium; Disodium 4-hydroxy-3-((4-sulphonatonaphthyl)azo)naphthalenesulphonate
Color index: EEC No.: E122, C.I. 14720, C.I. Acid Red 14, C.I. Acid Red 14 disodium salt, C.I. Food Red 3
Other names: Azorubine; Brillantcarmoisin O, Schultz Nr. 208; Solar Rubine; Solochrome Blue FB; Standacol carmoisine; Tertracid Red CA; Tertrochrome Blue FB; omega Chrome Blue FB; Nylomine Acid Red P4B; Omega Chrome Blue FB; Poloxal Red 2B; Java Rubine N; Karmesin; Kenachrome Blue 2R; Kiton Crimson 2R; Kiton Rubine R; Cerven kysela 14; Cerven potravinarska 3; Chrome Fast Blue 2R; Chromotrope FB; Cilefa Rubine R; Crimson 2EMBL; Diadem Chrome Blue G; Atul Acid Crystal Red; Acid Brilliant Rubine 2G[1]
It appears to cause allergic or intolerance reactions, particularly amongst those with an aspirin intolerance. Other reactions can include a rash similar to nettle rash and skin swelling. Asthmatics sometimes react badly to it.
It is one of the colourants that the Hyperactive Children's Support Group recommends be eliminated from the diet of children.
Azo dyes generally have been known to be carcinogenic for over 60 years [2] and are linked, particularly, to bladder cancer.
On 6 September 2007, the British Food Standards Agency revised advice on certain artificial food additives, including E122.
Professor Jim Stevenson from Southampton University, and author of the report, said: "This has been a major study investigating an important area of research. The results suggest that consumption of certain mixtures of artificial food colours and sodium benzoate preservative are associated with increases in hyperactive behaviour in children.
"However, parents should not think that simply taking these additives out of food will prevent hyperactive disorders. We know that many other influences are at work but this at least is one a child can avoid."
The following additives were tested in the research:
On 10 April 2008, the Foods Standard Agency called for a voluntary removal of the colours (but not sodium benzoate) by 2009.[4] In addition, it recommended that there should be action to phase them out in food and drink in the European Union (EU) over a specified period.[5]
The EFSA (European Food Standards Agency) has reviewed the Southampton Study and determined that the results are inconclusive and warrant no action at this time in the EU pending the outcome of further testing.[6]
UK ministers have agreed that the six colourings will be phased out by 2009.[7]
Azorubine is commonly used in the UK and in several other countries in a popular brand of soda and in children's medicine Calpol,[8] but it is a prohibited food additive in Canada, Japan, Norway, Sweden and the United States.[9] [10]