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HomeProduct name list1-[(2,5-dimethoxyphenyl)azo]-2-naphthol

1-[(2,5-dimethoxyphenyl)azo]-2-naphthol

Synonym(s):1-(2,5-Dimethoxyphenylazo)-2-naphthol

  • CAS NO.:6358-53-8
  • Empirical Formula: C18H16N2O3
  • Molecular Weight: 308.33
  • MDL number: MFCD01712266
  • EINECS: 228-778-9
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2023-05-25 18:01:11
1-[(2,5-dimethoxyphenyl)azo]-2-naphthol Structural

What is 1-[(2,5-dimethoxyphenyl)azo]-2-naphthol?

The Uses of 1-[(2,5-dimethoxyphenyl)azo]-2-naphthol

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.

Properties of 1-[(2,5-dimethoxyphenyl)azo]-2-naphthol

Melting point: 155-157°
Boiling point: 448.73°C (rough estimate)
Density  1.2510 (rough estimate)
refractive index  1.5700 (estimate)
Colour Index  12156
pka 13.61±0.50(Predicted)
form  neat
BRN  4510811
IARC 2B (Vol. 8, Sup 7) 1987
EPA Substance Registry System Citrus Red No. 2 (6358-53-8)

Safety information for 1-[(2,5-dimethoxyphenyl)azo]-2-naphthol

Signal word Warning
Pictogram(s)
ghs
Health Hazard
GHS08
GHS Hazard Statements H351:Carcinogenicity
Precautionary Statement Codes P281:Use personal protective equipment as required.

Computed Descriptors for 1-[(2,5-dimethoxyphenyl)azo]-2-naphthol

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