amaranth (C.I. 16185)
Amaranth
CAS: 915-67-3
Molecular Formula: C20H11N2Na3O10S3
amaranth (C.I. 16185) - Names and Identifiers
amaranth (C.I. 16185) - Physico-chemical Properties
| Molecular Formula | C20H11N2Na3O10S3 |
| Molar Mass | 604.47 |
| Density | 1.5 |
| Melting Point | >300°C |
| Water Solubility | 50 g/L (20 ºC) |
| Solubility | Soluble in water (17.2g/100ml,21 ℃), soluble in glycerin and propylene glycol, aqueous solution with purple. Slightly soluble in ethanol (0.5g/100mL 50% ethanol), insoluble in oil. |
| Appearance | Dark red to purple powder |
| Color | Dark reddish-brown to dark brown |
| Maximum wavelength(λmax) | ['520 nm'] |
| Merck | 14,375 |
| BRN | 4122311 |
| Storage Condition | Sealed in dry,Room Temperature |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| Sensitive | Sensitive to light |
| MDL | MFCD00004076 |
| Physical and Chemical Properties | Reddish brown to dark reddish brown powder or granules. No smell. Light resistance, strong heat resistance (105 ℃), poor oxidation resistance and reduction, not suitable for fermented foods and foods containing reducing substances. Stable to citric acid and tartaric acid. In case of alkali, it turns dark red. It is easy to fade in case of copper and iron. The dyeing power is weak. Soluble in water (17.2g/100ml,21 ℃) and glycerol. The aqueous solution is purple. Slightly soluble in ethanol (0.5g/100mL 50% ethanol). |
amaranth (C.I. 16185) - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| WGK Germany | 3 |
| RTECS | QJ6550000 |
| HS Code | 32129000 |
| Toxicity | LD50 intraperitoneal in mouse: 1gm/kg |
amaranth (C.I. 16185) - Reference
| Reference Show more | 1. Wu, Ming, et al. "Detection of Sudan dyes based on inner-filter effect with reusable conjugated polymer fibrous membranes." ACS applied materials & interfaces 10.9 (2018): 8287-8295.https://doi.org/10.1021/acsami.8b00164 2. [IF=9.229] Ming Wu et al."Detection of Sudan Dyes Based on Inner-Filter Effect with Reusable Conjugated Polymer Fibrous Membranes."Acs Appl Mater Inter. 2018;10(9):8287–8295 3. [IF=6.057] Yudong Gao et al."Electrochemical behavior of amaranth and its sensitive determination based on Pd-doped polyelectrolyte functionalized graphene modified electrode."Talanta. 2017 Jun;168:146 |
amaranth (C.I. 16185) - Introduction
Soluble in water, solubility in water: 50G/L (20°C), red solution with blue light, soluble in glycerin and propylene glycol, slightly soluble in ethanol, insoluble in most organic solvents. This product is easy to fade when exposed to copper and iron, easy to be decomposed by bacteria, and has poor oxidation resistance and reduction.
Last Update：2022-10-16 17:30:05
amaranth (C.I. 16185) - Reference Information
| Color index | 16185 |
| Biological applications | Detecting membrane-potential change; treating acquired resistance to GABA IC (ARG) agents |
| LogP | -5.13 |
| (IARC) carcinogen classification | 3 (Vol. 8, Sup 7) 1987 |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Application | The edible red pigment No. 2 (Amaranth red pigment) is a Japanese edible synthetic pigment (Japan seborrhei Corporation), content of more than 85%, powder, Japan's original packaging 5kg/barrel, mainly used for the production and processing of various types of food, make the product bright color, color resistance to light and high temperature, long-term storage will not fade. |
| content analysis | was determined according to Method 2 of OT-15. Weigh about 3g (accurate to 0.0002g) of the sample and dissolve it in fresh boiling water that has been cooled to room temperature, move it into a 500ml volumetric flask, dilute it to the scale, and shake it well. Draw 50ml sample solution into a 250ml Erlenmeyer flask, add 15g of trisodium citrate and 150ml of water, and heat to boiling while passing carbon dioxide gas flow under the liquid surface, and 0.1mol/L titanium trichloride standard solution titration to colorless as the end point. At the same time, 50ml of water was used instead of the sample solution, and a blank test was performed in the same manner. |
| toxicity | ADI 0-0.5mg/kg(FAO/WHO,2001). LD50>10g/kg (mouse, oral). HACSG (EC child protection group) is not permitted for use in children. Norway, United States, no use. |
| usage limit | GB 2. 760-2002(g/kg): fruit juice (taste) drinks, carbonated beverages, wine, candy, cakes on the color, plum, Hawthorn products, pickled small dishes, wafer biscuits, jelly, candy coating, 0.05; Red and green silk, dyed cherry canned (for decoration),0.10; Popsicle, ice cream, ice cream, 0.025. |
| Use | is used for coloring food, medicine and cosmetics. used as food colorant, Drug and Cosmetic colorant used as food colorant, China can be used for red and green silk, dyed cherry canned (Department of decoration), the maximum usage amount is 0.10g/kg; The maximum usage amount is 0.05g/kg in all kinds of beverages, wine, candy, cakes, plum, Hawthorn products and impregnated vegetables. for food colorants, China's provisions can be used for red and green silk, dyed cherry canned (Department of decorative), the maximum use of 0.10g/kg; In a variety of beverages, wine, candy, cake on the color, plum, Hawthorn products and soaked dishes, the maximum use of 0.05g/kg. redox indicators, such as those used for titrating trivalent arsenic, antimony and hydrazine; Food, Drug and Cosmetic coloration, cell staining in tissue culture; Color micrograph; wool and silk dyeing biological stain. |
| production method | preparation of amaranth sodium 1-Naphthylamine -4-sulfonate was dissolved in 8-9 times the amount (mass) 75~85 ℃ water, filtered, and cooled to 0~5 ℃; Add 1.2~1.5 times the amount (mass) of the original sodium salt of hydrochloric acid, fine crystals of 1-Naphthylamine -4-sulfonic acid are precipitated and cooled to below 5 °c; 1:2 (mass) is slowly added at 3-5 °c. The sodium nitrite solution was diazotized to obtain a slightly yellow paste-like diazo solution. After the reaction, the solution was strongly acidic (blue) to Congo red test paper. Sodium R (2-naphthol -3, 6-disulfonate) Dissolve in 9-10 times the amount (mass) of 60~65 ℃ water, then add part of sodium carbonate (1/5 of the total amount), dissolve and filter, filtrate into the reaction kettle, the remainder of the sodium carbonate was then added, dissolved with stirring and cooled to 5-8 °c; The diazo solution was slowly added for several hours at 10-15 °c and pH 8 for the coupling reaction. After the completion of the reaction (2-naphthol -3, 6-disulfonate slightly excessive), the solution was heated to 50~60 ℃, and then added refined sodium chloride, stirred, and then allowed to cool to room temperature naturally, crystals were precipitated by standing. Dissolve the crystals in 15 times the amount (mass) of 70 ° C clean water, add the appropriate amount of sodium carbonate, so that the solution is slightly alkaline, after filtration, Add refined salt, stirring and adjusting the pH value to 6.5~7.0 with hydrochloric acid, The product was crystallized by standing, separated and dried. Preparation of amaranth red aluminum Lake aluminum hydroxide is prepared from aluminum chloride, aluminum sulfate and other aluminum salts and alkali such as sodium carbonate, which is added to the aqueous solution of amaranth and precipitated to obtain the product. (1) preparation of amaranth. Dissolve sodium 1-Naphthylamine 4-sulfonate in water 8-9 times (mass) 75-85 °c, filter, and cool to 0-5 °c; Add 1.2-1.5 times (mass) of the original sodium salt hydrochloric acid, stirring and standing, precipitation of fine 1-Naphthylamine -4-sodium sulfonate crystals, and then cooled to below 5 deg C; At 3-5 deg C slowly added 1:2 (mass) the sodium nitrite solution was diazotized to obtain a slightly yellow paste-like diazo solution. After the reaction, the solution was strongly acidic (blue) to Congo red test paper. Dissolve sodium R (Sodium 2-naphthol -3, 6-disulfonate) in water 9-10 times (mass) 60-65 °c, then add a portion of sodium carbonate (1/5 of the total) After dissolving and filtering, the filtrate is put into the reaction kettle, then the rest of the sodium carbonate is added, the solution is stirred and cooled to 5-8 ℃, and then at 10-15 ℃ and PH 8, the diazo liquid was slowly added to conduct the coupling reaction for several hours. After the completion of the reaction (2-naphthol -3, 6-disulfonate slightly excess), the solution was heated to 50-60 ℃, added with refined sodium chloride, stirred, and then allowed to naturally cool to room temperature, crystals were precipitated by standing. Dissolve the crystals in 15 times the amount (mass) of 70 ° C clean water, add the appropriate amount of sodium carbonate, so that the solution is slightly alkaline, after filtration, Add refined salt, the mixture was stirred and adjusted to PH 6.5-7.0 with hydrochloric acid, left to crystallize, separated and dried to obtain the product. (2) preparation of amaranth aluminum Lake. Aluminum hydroxide is prepared from aluminum chloride, aluminum sulfate and other aluminum salts and alkali such as sodium carbonate, which is added to the aqueous solution of amaranth and precipitated to obtain the product. after diazotization from 1-Naphthylamine -4-sulfonic acid, coupling with 2-naphthol -3, 6-disulfonic acid (R salt) under alkaline conditions, Refined. obtained by diazotization of p-aminonaphthalene sulfonic acid followed by coupling with R acid (2-naphthol -3, 6-disulfonic acid), salting out and refining. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 20:45:29
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View History
amaranth (C.I. 16185)
2-氨基-5-氯-3-碘代苄腈
1-甲氧基-1-甲氨基-2-硝基乙烯
2-氨基-4-氯-3-氰基-5-甲酰基噻吩
1-氨基-3-环戊烯羧酸
AMITRIPTYLINE EP IMPURITY C HCL (NORTRIPTYLINE HCL)
2-氨基-5-氯-3-碘代苄腈
1-甲氧基-1-甲氨基-2-硝基乙烯
2-氨基-4-氯-3-氰基-5-甲酰基噻吩
1-氨基-3-环戊烯羧酸
AMITRIPTYLINE EP IMPURITY C HCL (NORTRIPTYLINE HCL)