Back كارمين Arabic Кармин Bulgarian Karmin BS Carmí (colorant) Catalan Karmín Czech Karmin Danish Karmin German Karmino Esperanto Carmín Spanish Košenill Estonian
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| Names | |
|---|---|
| Systematic IUPAC name
aluminum;calcium;1-methyl-3,5,6,8-tetraoxido-9,10-dioxo-7-[(2S,3R,4R,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]anthracene-2-carboxylate | |
Other names
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| Identifiers | |
| ChemSpider | |
| ECHA InfoCard | 100.014.295 |
| E number | E120 (colours) |
PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| C44H43AlCa2O30 | |
| Molar mass | 1158.936 g·mol−1 |
| Melting point | 298–300 °C (568–572 °F; 571–573 K) |
| insoluble < pH 11 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Carmine (/ˈkɑːrmən, ˈkɑːrmaɪn/) – also called cochineal (when it is extracted from the cochineal insect), cochineal extract, crimson lake, or carmine lake – is a pigment of a bright-red color obtained from the aluminium complex derived from carminic acid.[2] Specific code names for the pigment include natural red 4, C.I. 75470, or E120. Carmine is also a general term for a particularly deep-red color.
- ^ Dapson, RW (January 2007). "The history, chemistry and modes of action of carmine and related dyes". Biotechnic & Histochemistry. 82 (4–5): 173–187. doi:10.1080/10520290701704188. PMID 18074265.
- ^ Dapson, R. W.; Frank, M.; Penney, D. P.; Kiernan, J. A. (2007). "Revised procedures for the certification of carmine (C.I. 75470, Natural red 4) as a biological stain". Biotechnic & Histochemistry. 82 (1): 13–15. doi:10.1080/10520290701207364. PMID 17510809.