Solvent Orange 2

Solvent Orange 2 Basic information
Product Name:Solvent Orange 2
Synonyms:FAT ORANGE RR;CI 12100;1-(O-TOLYLAZO)-2-NAPHTHOL;1-[(2-methylphenyl)azo]-2-naphthol;O-TOLUENE-AZO-2-NAPHTHOL;ORANGE OT;OIL ORANGE SS;SOLVENT ORANGE 2
CAS:2646-17-5
MF:C17H14N2O
MW:262.31
EINECS:220-162-8
Product Categories:Solvent Dyestuff;Organics
Mol File:2646-17-5.mol
Solvent Orange 2 Structure
Solvent Orange 2 Chemical Properties
Melting point 124-126°C
Boiling point 405.56°C (rough estimate)
density 1.0823 (rough estimate)
refractive index 1.5500 (estimate)
storage temp. Amber Vial, -20°C Freezer, Under inert atmosphere
solubility Chloroform (Slightly), Methanol (Slightly, Heated)
pka13.52±0.50(Predicted)
form neat
Colour Index 12100
color Red to Dark Red
Water Solubility 26.23ug/L(room temperature)
BRN 8330630
Stability:Stable. Combustible. Incompatible with strong oxidizing agents.
CAS DataBase Reference2646-17-5(CAS DataBase Reference)
IARC2B (Vol. 8, Sup 7) 1987
EPA Substance Registry SystemC.I. Solvent Orange 2 (2646-17-5)
Safety Information
Hazard Codes Xn
Risk Statements 40
Safety Statements 36-22
WGK Germany 3
RTECS QL5425000
Hazardous Substances Data2646-17-5(Hazardous Substances Data)
MSDS Information
ProviderLanguage
1-[(2-Methylphenyl)azo]-2-naphtholEnglish
Solvent Orange 2 Usage And Synthesis
Chemical Propertiesred needles or powder
Uses1-o-Tolueneazo-2-naphthol is a potent cytochrome P-488 inducer. Dyes and metabolites.
PreparationO-Methylaniline diazotization, and Naphthalen-2-ol coupling.
DefinitionChEBI: Oil Orange SS is a member of azobenzenes.
General DescriptionRed needles or orange powder. Sublimes above 374°F.
Air & Water ReactionsAzo dyes can be explosive when suspended in air at specific concentrations. Insoluble in water.
Reactivity ProfileSolvent Orange 2 is an azo compound. Azo, diazo, azido compounds can detonate. This applies in particular to organic azides that have been sensitized by the addition of metal salts or strong acids. Toxic gases are formed by mixing materials of this class 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.
Fire HazardFlash point data for Solvent Orange 2 are not available; however Solvent Orange 2 is probably combustible.
Safety ProfileConfirmed carcinogen with experimental carcinogenic and neoplastigenic data. Poison by intravenous route. Mildly toxic by ingestion. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx. Used to color cosmetics, varnishes, oils, fats and waxes, petroleum products.
Properties and Applicationsred orange. From the glacial acetic acid in the products crystallization for red crystal, its melting point is 131 ℃. Slightly soluble in ethanol for orange red solution, slightly soluble in acetone and benzene. In concentrated sulfuric acid to red light purple, dilution after big red, and the red precipitation; In concentrated nitric acid for red solution and then into orange. Dye alcohol solution with dilute hydrochloric acid, color slightly changed; With dilute sodium hydroxide solution for brown light orange. It is mainly used in oil product color, also used for ink and cultural and educational supplies coloring.
StandardLight FastnessHeat-resistant(℃)waterSodium Carbonate(5%)Hydrochloric acid(5%)Melting pointStableISOGood-General12890≥190SublimationInsolubleNo changeNo change
Solvent Orange 2 Preparation Products And Raw materials
Raw materialso-Toluidine–>2-Naphthol

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