| Identification | Back Directory | [Name]
1-[(2,5-dimethoxyphenyl)azo]-2-naphthol | [CAS]
6358-53-8 | [Synonyms]
CITRUSRED
C.I.12156
CITRUSRED2
CITRUSREDNO.2
Solvent Red 80.
C.I.Solvent Red 80
1-(2,5-DIMETHYLPHENYLAZO)-2-NAPHTHOL
1-[(2,5-dimethoxyphenyl)azo]-2-naphthol
1-((2,5-DiMethoxyphenyl)diazenyl)naphthalen-2-ol | [EINECS(EC#)]
228-778-9 | [Molecular Formula]
C18H16N2O3 | [MDL Number]
MFCD01712266 | [MOL File]
6358-53-8.mol | [Molecular Weight]
308.331 |
| Chemical Properties | Back Directory | [Melting point ]
155-157° | [Boiling point ]
448.73°C (rough estimate) | [density ]
1.2510 (rough estimate) | [refractive index ]
1.5700 (estimate) | [Colour Index ]
12156 | [form ]
neat | [pka]
13.61±0.50(Predicted) | [BRN ]
4510811 | [LogP]
3.129 (est) | [IARC]
2B (Vol. 8, Sup 7) 1987 | [EPA Substance Registry System]
Citrus Red No. 2 (6358-53-8) |
| Safety Data | Back Directory | [Hazard Codes ]
Xn | [Risk Statements ]
40 | [Safety Statements ]
45 | [WGK Germany ]
3 | [RTECS ]
QL3675000 | [Safety Profile]
Confirmed carcinogen
with experimental carcinogenic data.
Mutation data reported. When heated to
decomposition it emits toxic fumes of NOx | [Hazardous Substances Data]
6358-53-8(Hazardous Substances Data) | [Toxicity]
citrus red is a color used for coloring the skin of mature oranges. This
compound has been described as being carcinogenic. |
| Hazard Information | Back Directory | [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. | [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. | [Hazard]
Possible carcinogen. | [Uses]
To color orange skins. | [Definition]
ChEBI: Citrus Red No.2 is a member of azobenzenes. | [Preparation]
2,5-Dimethoxyaniline diazotization, and Naphthalen-2-ol coupling. | [Properties and Applications]
orange to red. Melting point of 155 ~ 157 ℃. Slightly soluble in water, slightly soluble in ethanol and rape oil. |
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