| Identification | Back Directory | [Name]
CARMINE | [CAS]
1260-17-9 | [Synonyms]
E120
CI 75470
Carminic
CARMINE 2G
CARMINE 40
Karminsure
NSC 326224
CI NO 75470
CARMINE RED
CARMINIC ACID
CARMINE PICRO
coccinic acid
cinaturalred4
CARMINE BEST'S
CARMINE NACARAT
CARMINE REAGENT
CARMINATE BORAX
C.I.Naturalred4
carminicacid50%
carminicacid95%
CarmineCochineal
FD AND C CARMINE
CARMINIC ACID(RG)
cochinealtincture
Carminic Acid 50%
Carminic acid,96%
Carminic Acid
CarMinic Acid, >70%
Carminic acid (E120)
Carminic acid, 70-90%
CARMINE ALUMINUM LAKE
CARMINE, WATER SOLUBLE
CarMinic acid, 70-90% 1GR
Carminic acid (C.I. 75470)
10-dioxo-hydroxy-1-methyl-
CARMINIC ACID (NATURAL DYE)
CarminicAcidGrForMicroscopy
10-dioxo-ahydroxy-1-methyl-
CARMINIC ACID, FOR MICROSCOPY
ALUMINUM LAKE OF CARMINIC ACID
CARMINIC ACID (C.I. 75470) GR FOR ANALYS
CALCIUM ALUMINIUM LACQUER WITH CARMINIC ACID
Carminic acid (C.I. 75470) GR for analysis and for microscopy
2-anthracenecarboxylicacid,7-beta-d-glucopyranosyl-9,10-dihydro-3,5,6,8-tetr
2-anthracenecarboxylicacid,7-beta-d-glucopyranosyl-9,10-dihydro-3,5,6,8-tetra
7-alpha-d-glucopyranosyl-9,10-dihydro-3,5,6,8-tetrahydroxy-1-methyl-9,10-dioxo
7-β-D-Glucopyranosyl-9,10-dihydro-3,5,6,8-tetrahydroxy-1-methyl-9,10-dioxo-2-anthracenecarboxylic acid
2-Anthracenecarboxylicacid, 7-b-D-glucopyranosyl-9,10-dihydro-3,5,6,8-tetrahydroxy-1-Methyl-9,10-dioxo-
7-.beta.-D-glucopyranosyl-9,10-dihydro-3,5,6,8-tetrahydroxy-1-methyl-9,10-dioxo-2-Anthracenecarboxylicacid
2-Anthracenecarboxylic acid, 7-.beta.-D-glucopyranosyl-9,10-dihydro-3,5,6,8-tetrahydroxy-1-methyl-9,10-dioxo-
3,5,6,8-Tetrahydroxy-1-methyl-9,10-dioxo-7-((2S,3R,4R,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)-9,10-dihydroanthracene-2-carboxylic acid | [EINECS(EC#)]
215-023-3 | [Molecular Formula]
C22H20O13 | [MDL Number]
MFCD00167028 | [MOL File]
1260-17-9.mol | [Molecular Weight]
492.39 |
| Chemical Properties | Back Directory | [Appearance]
red to dark red crystalline powder | [Melting point ]
>200?C | [alpha ]
15654 +51.6° (water) | [Boiling point ]
506.2°C (rough estimate) | [density ]
1.4504 (rough estimate) | [refractive index ]
1.6000 (estimate) | [Fp ]
12℃ | [storage temp. ]
Refrigerator | [solubility ]
30g/l | [Colour Index ]
75470 | [form ]
Crystalline Powder | [pka]
1.62±0.20(Predicted) | [color ]
Red to dark red | [Odor]
Odorless | [PH]
1.6 (10g/l, H2O, 20℃) | [PH Range]
4.8 - 6.2 | [optical activity]
[α]20/D +3.1°, c = 1 in H2O | [Water Solubility ]
1.298g/L(room temperature) | [Merck ]
14,1843 | [BRN ]
71651 | [LogP]
1.532 (est) | [CAS DataBase Reference]
1260-17-9 | [EPA Substance Registry System]
C.I. Natural Red 4 (1260-17-9) |
| Hazard Information | Back Directory | [Chemical Properties]
red to dark red crystalline powder | [Uses]
A red glucosidal hydroxyanthrapurin, it is produced naturally within some insects as a defense mechanism. | [Uses]
antineoplastic, glucosyltransferase inhibitor | [Definition]
ChEBI: A tetrahydroxyanthraquinone that is that is 1,3,4,6-tetrahydroxy-9,10-anthraquinone substituted by a methyl group at position 8, a carboxy group at position 7 and a 1,5-anhydro-D-glucitol moiety at position 2 via a C-gly
osidic linkage. It is a natural dye isolated from several insects such as Dactylopius coccus. | [General Description]
Dark purplish-brown mass or bright red or dark red powder. Darkens at 248°F. Deep red color in water. Yellow to violet in acidic aqueous solutions. | [Air & Water Reactions]
Soluble in water [Hawley]. | [Reactivity Profile]
CARMINE neutralizes bases in exothermic reactions. Incompatible with strong oxidizing agents. | [Fire Hazard]
Flash point data for CARMINE are not available. CARMINE is probably combustible. | [History]
CI Natural Red 4(CI 75470), is a red dye occurring as a glycoside in the body of the cochineal insect Dactylopius coccus of the order Homoptera, family Coccidae. This insect is native to Central and South America. The Aztecs had extracted the dye from the insect centuries before the coming of the Spaniards. For breeding purposes, the insects were collected in the autumn and carefully protected during the winter months. Cochineal was harvested after three months, and then the bugs were killed by immersion in hot water, by placing in hot ovens, or by exposure to the hot sun. The latter method produced the highest quality dye. At present, Peru and the Canary Islands are the main source of the dye. Until the advent of synthetic dyes, the principal use for carminic acid was for dyeing tin-mordanted wool or silk. Its aluminum lake, carmine, finds use in the coloring of foods. | [Purification Methods]
Carminic acid forms red prisms from EtOH. It gives a red colour in Ac2O and yellow to violet in acidic solution. UV: max (H2O) 500nm ( 6,800); (0.02N HCl) 490-500nm ( 5,800) and (0.0001N NaOH) 540nm ( 3,450). IR: max (Nujol) 1708s, 1693s, 1677m, 1648m, 1632m, 1606s, 1566s, 1509 cm-1. Periodate oxidation is complete after 4hours at 0o with the consumption of 6.2 mols. The tetra-O-methyl carminate has m 186-188o (yellow needles from *C6H6/pet ether). [IR: Ali & Haynes J Chem Soc 1033 1959, Bhatia & Venkataraman Indian J Chem 3 (2) 92 1965, Synthesis: Davis & Smith Biochemical Preparations 4 38 1955, Beilstein 18 III/1V 6697.] |
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