Carmine supplier | CasNO.1390-65-4

Name
Carmine
EINECS 215-023-3
CAS No. 1390-65-4
Density 1.869 g/cm3
Solubility Negligible
Melting Point 136oC dec
Formula C22H20O13
Boiling Point 907.6oC at 760 mmHg
Molecular Weight 557.43000
Flash Point 316.1oC
Transport Information
Appearance red powder
Safety 22-24/25
Risk Codes
Molecular Structure
Hazard Symbols
Synonyms Crimson Lake;Cochineal;Natural Red 4;C.I. 75470;E120;
PSA 256.66000
LogP -0.43850

Carmine Specification

The Carmine, with the CAS registry number 1390-65-4, is also known as Natural Red 4. Its classification code is Mutation data. Carmine is a pigment of a bright-red color obtained from the aluminium salt of carminic acid, which is produced by some scale insects, such as the cochineal scale and the Polish cochineal, and is used as a general term for a particularly deep-red color of the same name. Carmine is used in the manufacture of artificial flowers, paints, crimson ink, rouge, and other cosmetics, and is routinely added to food products such as yogurt and certain brands of juice, the most notable ones being those of the ruby-red variety.

Preparation: the powdered scale insect bodies are boiled in ammonia or a sodium carbonate solution, the insoluble matter is removed by filtering, and alum is added to the clear salt solution of carminic acid to precipitate the red aluminium salt, called "carmine lake" or "crimson lake." Purity of color is ensured by the absence of iron. Stannous chloride, citric acid, borax, or gelatin may be added to regulate the formation of the precipitate. For shades of purple, lime is added to the alum; thus, the traditional crimson color is guaranteed not only by carminic acid but also by choice of its chelating metal salt ion.

Product Name

Carmine

Carmine Specification

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