carmine
Also known as crimson lake, cochineal, natural red 4, red food coloring
Carmine ()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. 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.
Chemical data
- Formula
- C22H20O13
- Molecular weight
- 492.4 g/mol
- IUPAC name
- 3,5,6,8-tetrahydroxy-1-methyl-9,10-dioxo-7-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]anthracene-2-carboxylic acid
- SMILES
- CC1=C2C(=CC(=C1C(=O)O)O)C(=O)C3=C(C2=O)C(=C(C(=C3O)O)C4C(C(C(C(O4)CO)O)O)O)O
- InChIKey
- DGQLVPJVXFOQEV-UHFFFAOYSA-N
- XLogP
- 0.5
- Polar surface area
- 243 Ų
- H-bond donors
- 9
- H-bond acceptors
- 13
- Formal charge
- 0
via PubChem
Research
4,477 papersArticle
24 sectionsContents
- Etymology
- History
- Production
- Preparation
- Identification and characteristics
- Wavelength
- Hue
- Translucence
- Value
- Permanence
- Notable occurrences in art
- Other uses
- Cartography
- Cosmetics
- Histology
- Medicine
- Regulations for use in foods
- United States
- European Union
- See also
- References
- Sources
- Further reading
- External links
Carmine ()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. 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.
== Etymology == thumb|A cluster of Dactylopius coccus (cochineal scale) females growing in Barlovento, [[Canary Islands]]