Related Directory Categories
- Dyes and Pigments (195)
- Pigments (165)
- Bleaching and Dyeing (61)
- Dyeing and Processing (29)
- Tie Dye (25)
- Dye Sublimation (16)
- Dyeing and Printing (13)
- Amaranth (13)
- Dyeing (12)
- Tie Dye (11)
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Amaranth (dye)
From Wikipedia, the free encyclopedia
| Amaranth (dye) | |
|---|---|
 |
|
| IUPAC name | trisodium (4E)-3-oxo-4-[(4-sulfonato-1-naphthyl)hydrazono]naphthalene-2,7-disulfonate |
| Other names | FD&C Red No. 2, C.I. Food Red 9, Acid Red 27, Azorubin S, C.I. 16185 |
| Identifiers | |
| CAS number | |
| PubChem | |
| SMILES | C1=CC=C2C(=C1)C(=CC=C2S(=O)(=O)[O-])NN=C3C4=C(C=C(C=C4)S(=O)(=O)[O-])C=C(C3=O)S(=O)(=O)[O-].[Na+].[Na+].[Na+] |
| Properties | |
| Molecular formula | C20H11N2Na3O10S3 |
| Molar mass | 604.47305 |
| Appearance | Dark red solid |
| Melting point |
120 °C (decomposes) |
| Hazards | |
| R-phrases | R36/37/38 |
| S-phrases | S36/37/39 |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
|
Amaranth, FD&C Red No. 2, E123, C.I. Food Red 9, Acid Red 27, Azorubin S, or C.I. 16185, is a dark red to purple azo dye once used as a food dye and to color cosmetics, but since 1976 it has been banned in the United States by FDA as it is a suspected carcinogen. [1] It usually comes as a trisodium salt. It has the appearance of reddish-brown, dark red to purple water-soluble powder that decomposes at 120 °C without melting. Its water solution has absorption maximum at about 520 nm. Amaranth is made from coal tar.
Amaranth is an anionic dye. It can be applied to natural and synthetic fibers, leather, paper, and phenol-formaldehyde resins.
As a food additive it has E number E123.
In 1969, Soviet scientists discovered that long-term usage of Red Dye #2, even at the low dosages found in foods, caused cancer in test animals. The FDA conducted its own tests, following the Soviet guidelines, with the results being inconclusive. The FDA banned FD&C Red No. 2 in 1976. FD&C Red No. 3 (erythrosine), and FD&C Red No. 40 (Allura Red AC) replaced the decertified color.
- ^ "The following color additives are not authorized for use in food products in the United States: (1) Amaranth (C.I. 16185, EEC No. E123, formerly certifiable as FD&C red No. 2);" FDA/CFSAN Food Compliance Program: Domestic Food Safety Program