Introduction：Basic information about 1-[(2,5-dimethoxyphenyl)azo]-2-naphthol CAS 6358-53-8, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
1-[(2,5-dimethoxyphenyl)azo]-2-naphthol Basic information
| Product Name: | 1-[(2,5-dimethoxyphenyl)azo]-2-naphthol |
| Synonyms: | Blueberry red pigment;C.I.12156;C.I.Solvent Red 80;1-((2,5-DiMethoxyphenyl)diazenyl)naphthalen-2-ol;1-[(2,5-dimethoxyphenyl)azo]-2-naphthol;Solvent Red 80.;1-(2,5-DIMETHYLPHENYLAZO)-2-NAPHTHOL;CITRUSRED |
| CAS: | 6358-53-8 |
| MF: | C18H16N2O3 |
| MW: | 308.33 |
| EINECS: | 228-778-9 |
| Product Categories: | dyestuff |
| Mol File: | 6358-53-8.mol |
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1-[(2,5-dimethoxyphenyl)azo]-2-naphthol Chemical Properties
| Melting point | 155-157° |
| Boiling point | 448.73°C (rough estimate) |
| density | 1.2510 (rough estimate) |
| refractive index | 1.5700 (estimate) |
| storage temp. | 2-8°C |
| pka | 13.61±0.50(Predicted) |
| Colour Index | 12156 |
| BRN | 4510811 |
| Major Application | cleaning products
cosmetics
food and beverages
personal care |
| InChI | 1S/C18H16N2O3/c1-22-13-8-10-17(23-2)15(11-13)19-20-18-14-6-4-3-5-12(14)7-9-16(18)21/h3-11,21H,1-2H3 |
| InChIKey | GJUABKCEXOMRPQ-UHFFFAOYSA-N |
| SMILES | COc1ccc(OC)c(c1)N=Nc2c(O)ccc3ccccc23 |
| LogP | 3.129 (est) |
| IARC | 2B (Vol. 8, Sup 7) 1987 |
| EPA Substance Registry System | Citrus Red No. 2 (6358-53-8) |
Safety Information
| Hazard Codes | Xn |
| Risk Statements | 40 |
| Safety Statements | 45 |
| WGK Germany | 3 |
| RTECS | QL3675000 |
| TSCA | TSCA listed |
| Storage Class | 11 - Combustible Solids |
| Hazard Classifications | Carc. 2 |
| Hazardous Substances Data | 6358-53-8(Hazardous Substances Data) |
| Toxicity | citrus red is a color used for coloring the skin of mature oranges. Thiscompound has been described as being carcinogenic. |
1-[(2,5-dimethoxyphenyl)azo]-2-naphthol Usage And Synthesis
| Chemical Properties | Orange-red powder. Insoluble in water. Soluble in aromatic solvents. |
| Uses | To color orange skins. |
| Preparation | 2,5-Dimethoxyaniline diazotization, and Naphthalen-2-ol coupling. |
| Definition | ChEBI: Citrus Red No.2 is a member of azobenzenes. |
| General Description | Orange to yellow solid or dark red powder. |
| Air & Water Reactions | Azo dyes can be explosive when suspended in air at specific concentrations. Insoluble in water. |
| Reactivity Profile | 1-[(2,5-dimethoxyphenyl)azo]-2-naphthol is an azo compound. Toxic gases are formed by mixing compounds containing azo groups with acids, aldehydes, amides, carbamates, cyanides, inorganic fluorides, halogenated organics, isocyanates, ketones, metals, nitrides, peroxides, phenols, epoxides, acyl halides, and strong oxidizing or reducing agents. Flammable gases are formed by mixing materials in this group with alkali metals. Explosive combination can occur with strong oxidizing agents, metal salts, peroxides, and sulfides. |
| Hazard | Possible carcinogen. |
| Health Hazard | ACUTE/CHRONIC HAZARDS: When heated to decomposition it emits toxic fumes of NOx. |
| Fire Hazard | Flash point data for 1-[(2,5-dimethoxyphenyl)azo]-2-naphthol are not available. 1-[(2,5-dimethoxyphenyl)azo]-2-naphthol is probably combustible. |
| Safety Profile | Confirmed carcinogen with experimental carcinogenic data. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx |
| Properties and Applications | orange to red. Melting point of 155 ~ 157 ℃. Slightly soluble in water, slightly soluble in ethanol and rape oil. |
1-[(2,5-dimethoxyphenyl)azo]-2-naphthol Preparation Products And Raw materials
| Raw materials | 2,5-Dimethoxyaniline-->2-Naphthol |
