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

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

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

CBNumberCB4936181

SummenformelC18H16N2O3

Molgewicht308.33

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

Schmelzpunkt	155-157°
Siedepunkt	448.73°C (rough estimate)
Dichte	1.2510 (rough estimate)
Brechungsindex	1.5700 (estimate)
pka	13.61±0.50(Predicted)
Colour Index	12156
BRN	4510811
LogP	3.129 (est)
IARC	2B (Vol. 8, Sup 7) 1987
EPA chemische Informationen	Citrus Red No. 2 (6358-53-8)

Sicherheit

Kennzeichnung gefährlicher	Xn
R-Sätze:	40
S-Sätze:	45
WGK Germany	3
RTECS-Nr.	QL3675000
Giftige Stoffe Daten	6358-53-8(Hazardous Substances Data)
Toxizität	citrus red is a color used for coloring the skin of mature oranges. This compound has been described as being carcinogenic.

Gefahreninformationscode (GHS)

Verwenden
To color orange skins.
synthetische
2,5-Dimethoxyaniline diazotization, and Naphthalen-2-ol coupling.
Definition
ChEBI: Citrus Red No.2 is a member of azobenzenes.
Allgemeine Beschreibung
Orange to yellow solid or dark red powder.
Air & Water Reaktionen
Azo dyes can be explosive when suspended in air at specific concentrations. Insoluble in water.
Reaktivität anzeigen
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.
Brandgefahr
Flash point data for 1-[(2,5-dimethoxyphenyl)azo]-2-naphthol are not available. 1-[(2,5-dimethoxyphenyl)azo]-2-naphthol is probably combustible.
Sicherheitsprofil
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.