2783-94-0

Basic information

• Product Name: Food Yellow 3
• Synonyms: SUNSET YELLOW;SUNSET YELLOW FCF;1351yellow;1899yellow;1-p-sulfophenylazo-2-hydroxynaphthalene-6-sulfonate,disodiumsalt;1-p-sulfophenylazo-2-naphthol-6-sulfonicacid,disodiumsalt;1-p-sulphophenylazo-2-naphthol-6-sulphonicacid,disodiumsalt;6-hydroxy-5-((4-sulfophenyl)azo)-2-naphthalenesulfonicacid,disodiumsalt
• CAS NO: 2783-94-0
• Molecular Formula: C₁₆H₁₀N₂O₇S₂*2Na
• Molecular Weight: 452.37
• EINECS: 220-491-7
• Product Categories: Analytical Chemistry;Food Colors by Food Sanitation Law in Japan;Aromatics;Intermediates & Fine Chemicals;Pharmaceuticals;Sulfur & Selenium Compounds;Azo
• Mol File: 2783-94-0.mol

Chemical Properties

• Melting Point: 390°C (dec.)
• Boiling Point: 162.4°C
• Appearance: Orange-red/crystals
• Density: 0.474-0.588[at 20℃]
• Storage Temp.: Amber Vial, Refrigerator
• Solubility: Soluble in water, ethanol
• PKA: 0[at 20 ℃]
• Water Solubility: 5-10 g/100 mL at 24 ºC
• Stability: Stable. Combustible. Incompatible with strong oxidizing agents.
• Merck: 14,9001
• CAS DataBase Reference: Food Yellow 3(CAS DataBase Reference)
• NIST Chemistry Reference: Food Yellow 3(2783-94-0)
• EPA Substance Registry System: Food Yellow 3(2783-94-0)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-36
• WGK Germany: 2
• RTECS: QK2450000
• Hazardous Substances Data: 2783-94-0(Hazardous Substances Data)

Usage

Uses

Used in Food Industry:
Food Yellow 3 is used as a colorant for various food items, including orange sodas, orange jelly, marzipan, Swiss rolls, apricot jam, citrus marmalade, lemon curd, sweets, hot chocolate mix, packet soups, trifle mix, breadcrumbs, snack chips, shelf fresh noodles, and cheese sauce mixes. It provides a vibrant yellow-orange color to these products, enhancing their visual appeal.
Used in Drug Industry:
In the drug industry, Food Yellow 3 is used in ingested and externally applied drugs, as well as dietary supplements. It serves as a colorant to improve the appearance of medications and supplements, making them more visually appealing to consumers.
Used in Cosmetics Industry:
Food Yellow 3 is also used in the cosmetics industry as a colorant for various products, such as creams, lotions, and makeup. Its ability to provide a consistent and vibrant color makes it a popular choice for enhancing the visual appeal of cosmetic products.

Preparation

4-Aminobenzenesulfonic acid?diazo, and 6-Hydroxynaphthalene-2-sulfonic acid?coupling.

Air & Water Reactions

Azo dyes can be explosive when suspended in air at specific concentrations. Soluble in water.

Reactivity Profile

Food Yellow 3 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.

Health Hazard

SYMPTOMS: It can cause enlargement of the caecum and weight loss.

Fire Hazard

Flash point data for Food Yellow 3 are not available; however, Food Yellow 3 is probably combustible.

Flammability and Explosibility

Nonflammable

Safety Profile

Low toxicity by ingestion and intraperitoneal routes. Mutation data reported. When heated to decomposition it emits very toxic fumes of NOx and SOx.

InChI:InChI=1/C16H12N2O7S2.2Na/c19-15-8-1-10-9-13(27(23,24)25)6-7-14(10)16(15)18-17-11-2-4-12(5-3-11)26(20,21)22;;/h1-9,17H,(H,20,21,22)(H,23,24,25);;/q;2*+1/p-2/b18-16+;;

Synthetic route

sunset yellow FCF (2783-94-0) → sunset yellow sulfonyl chloride

Conditions	Yield
With thionyl chloride In 1,2-dichloro-ethane; N,N-dimethyl-formamide at 20 - 60℃; for 4.5h;	83.6%

sunset yellow FCF (2783-94-0) → 2-aminonaphthalene-1,6-diol (4826-64-6)

Conditions	Yield
With azoreductase from Bacillus lentus; NADPH; NADH In aq. buffer at 35℃; for 4h; Enzymatic reaction;

sunset yellow FCF (2783-94-0) + pepsin → pepsin complex with sunset yellow

Conditions	Yield
In aq. buffer at 24.84℃; for 0.5h;

sunset yellow FCF (2783-94-0) → carbon dioxide (124-38-9)

Conditions	Yield
With C106H100Ag4I2N8P8S2(2+)*2I(1-); oxygen In water for 3h; Kinetics; Reagent/catalyst; UV-irradiation;