NATURAL RED 4
carmine
CAS: 1390-65-4
Molecular Formula: C22H20O13
NATURAL RED 4 - Names and Identifiers
| Name | carmine |
| Synonyms | carmine CARMINE CI 75470 CARMINE 40 CARMINE 2G CI NO 75470 Natural Red 4 CARMINATE BORAX Nacarat Cochineal CARMINE ALUMINUM LAKE cochineal and carminic acid ALUMINUM LAKE OF CARMINIC ACID hydrated alu-minium chelate of carminic acid calcium 6-carboxy-1-[[6-carboxy-4,7-dihydroxy-5-methyl-2-oxido-9,10-dioxo-3-[(2R,3S,4S,5S)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydropyran-2-yl]oxy-1-anthryl]oxy-hydroxy-alumanyl]oxy-4,7-dihydroxy-5-methyl-9,10-dioxo-3-[(2R,3S,4S,5S)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydropyran-2-yl]oxy-anthracen-2-olate trihydrate |
| CAS | 1390-65-4 |
| EINECS | 215-724-4 |
| InChI | InChI=1/2C22H20O14.Al.Ca.4H2O/c2*1-4-8-5(2-6(24)9(4)21(33)34)12(25)10-11(14(8)27)16(29)20(18(31)15(10)28)36-22-19(32)17(30)13(26)7(3-23)35-22;;;;;;/h2*2,7,13,17,19,22-24,26,28-32H,3H2,1H3,(H,33,34);;;4*1H2/q;;+3;+2;;;;/p-5/t2*7?,13-,17+,19+,22-;;;;;;/m10....../s1/rC44H39AlO29.Ca.3H2O/c1-7-15-9(3-11(48)17(7)41(64)65)23(50)21-19(27(15)54)29(56)39(71-43-33(60)31(58)25(52)13(5-46)69-43)35(62)37(21)73-45(68)74-38-22-20(28(55)16-8(2)18(42(66)67)12(49)4-10(16)24(22)51)30(57)40(36(38)63)72-44-34(61)32(59)26(53)14(6-47)70-44;;;;/h3-4,13-14,25-26,31-34,43-44,46-49,52-53,56-63,68H,5-6H2,1-2H3,(H,64,65)(H,66,67);;3*1H2/q;+2;;;/p-2/t13?,14?,25-,26+,31+,32-,33+,34-,43-,44+;;; |
NATURAL RED 4 - Physico-chemical Properties
| Molecular Formula | C22H20O13 |
| Molar Mass | 492.39 |
| Density | > 1.0 |
| Melting Point | 138–140℃ (darkens) |
| Water Solubility | Negligible |
| Solubility | ammonium hydroxide: soluble1mg/mL |
| Vapor Presure | 0.02Pa at 90℃ |
| Appearance | powder |
| Color | red |
| Odor | odorless |
| Maximum wavelength(λmax) | ['531nm, 563nm'] |
| Merck | 14,1843 |
| Storage Condition | room temp |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| Physical and Chemical Properties | Properties and indicators: glossy red fragments or dark red powder. Decomposition temperature 250. Soluble hydroxide alkali or sodium carbonate solution, dark red; Partially soluble in hot water, almost insoluble in cold water and dilute acid, also soluble in borax. Ld508.89 g/kg (mouse, oral). Source: aluminum hydroxide was added to the extract of cochineal red, which was obtained by precipitation. The molecular ratio of aluminum to carminic acid is 1: 2. |
| Use | Can be used for seasoning sauce, wine, candy, beverage, cold drinks, sausage, ham, cakes, snacks, yogurt, ice cream, popsicles, milk powder and other coloring, red colorant. |
NATURAL RED 4 - Risk and Safety
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 2 |
| RTECS | FH8891000 |
| FLUKA BRAND F CODES | 3-8-10 |
| HS Code | 3203 00 90 |
NATURAL RED 4 - Reference Information
| FEMA | 2242 | CARMINE (COCCUS CACTI L.) |
| Color index | 75470 |
| Biological applications | Drug delivery products; preventing coronary artery disease; treating Alzheimer's disease; soaps; Whiting teeth; in food products; pharmaceuticals; cosmetics; medical devices |
| Overview | Carmine is also called Carmine or Carmine. Water-soluble synthetic pigment, bright yellow-red, monochromatic variety. It can be safely used for coloring of foods, beverages, pharmaceuticals, cosmetics, feeds, tobacco, toys, food packaging materials, and the like. Red prismatic crystals were obtained from ethanol with no apparent melting point and darkened at 120 °c. Dark red in water; Yellow to purple in acidic solution. Soluble in water, ethanol, glycerol, concentrated sulfuric acid, slightly soluble in ether, ethanol, almost insoluble in petroleum ether, benzene, chloroform, oil. There was no poisoning phenomenon in animal test. There are many types of Carmine, such as food pigments, dyes and so on. A tropical female cochineal that is dried, ground to a powder, extracted Carmine, and then treated with alum to remove impurities from it. Pure Carmine can not be dyed, to be dissolved by acidic or alkaline solution to stain. The commonly used acidic solution is glacial acetic acid or picric acid, alkaline solution is ammonia, borax and so on. Carmine makes the cell nucleus of the excellent dye, stain the specimen is not easy to fade. It is suitable for staining sections or tissue blocks, especially for overall staining of small materials. The solution prepared with Carmine can be kept for several years after dyeing. Carmine solution should be filtered and then used when it is turbid. Dye index name: C. I. Food Red 7 dye index number: C. I. 16255 European Community Food coloring code: E124 Japanese Food coloring code: Food Red No. 102. |
| Use | colorant. China's "health standards for the use of food additives" (GB2760 -1996): This product (Carmine) can be used for carbonated beverages, the maximum use of 0.02g/kg; Sausage, western ham, ice cream, ice cream, Popsicle, 0.025g/kg; Pudding snacks, yogurt, candy, sauce, 0.05g/kg; Flavored milk powder, 0.6g/kg. edible red pigment. mostly used for soft capsule shell stain, can play the role of color determination preparation of carminic acid, embryology for overall staining, nuclear staining, titration of ammonia solution indicator, microscopic analysis, fluorescence analysis, dyes, coloring of food, etc. It can be used for the calibration and standardization of synthetic pigment detection methods in food, and can also be used as a working standard for routine analysis and detection. |
| Application | cochineal is a water-dispersible powder, insoluble in alcohol and oil, sensitive to oxidation, easy to bind to protein. Used in dairy products coloring, can also be used in meat, candy, aperitics, soft drinks, apple cider vinegar, yogurt, baked goods, jam, jelly, cosmetics, dairy products, medicines. |
| carminic acid | is also called "carminic acid". Molecular formula C22H20O13, molecular weight 492.39. Red columnar crystals. Without a specific melting point, it turned black when heated to 120 °c. The aqueous solution was dark red. PH 4.8 solution is yellow; PH 6.2 solution is purple. Soluble in water, ethanol, concentrated sulfuric acid, slightly soluble in ether, almost insoluble in petroleum ether, benzene, chloroform. The glycoside colored substance obtained from cochineal is the main component of Carmine. Can be used for photographic coloring, bacterial staining, can also be used as paint pigments, sometimes as acid-base titration or oxidation titration indicator. * Carmine is carminic acid aluminium-calcium color. Bright red powder, almost insoluble in cold water, dilute acid, slightly soluble in hot water, soluble in sodium hydroxide and sodium carbonate solution (dark red). It can be obtained by treating dried carmine with soda ash, alum and tartaric acid. Can be used as water-based paint, ink, art drawing pigment, can also be used as food, herbs, cosmetics colorants. |
| production method | after extracting the female of cochineal with water, dilute ethanol or methanol, the concentrated solution obtained by further removing ethanol or methanol. |
Last Update：2024-04-09 15:16:44
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