3567-69-9

Basic information

• Product Name: C.I. 14720
• Synonyms: CI 14720 Acid red 14;Azo Rubine (50% Dye content);1-Naphthalenesulfonicacid, 4-hydroxy-3-[2-(4-sulfo-1-naphthalenyl)diazenyl]-, sodiuM salt (1:2);ChroMe becoMes priMe FB;Disodium 4-hydroxy-3-[(4-sulfo-1-naphthalenyl)azo]-1-naphthalenesulfonate;PONTACYL RUBINE R;MORDANT BLUE 79;11959red
• CAS NO: 3567-69-9
• Molecular Formula: C₂₀H₁₂N₂O₇S₂*2Na
• Molecular Weight: 502.43
• EINECS: 222-657-4
• Product Categories: Dyes and Pigments;Organics
• Mol File: 3567-69-9.mol
• Article Data: 0

Chemical Properties

• Boiling Point: 907.49℃[at 101 325 Pa]
• Flash Point: >225℃
• Appearance: reddish-brown crystals or dark maroon powder
• Storage Temp.: Amber Vial, Refrigerator
• Solubility: DMSO (Slightly, Heated), Methanol (Slightly), Water (Slightly)
• Water Solubility: Soluble in water
• CAS DataBase Reference: C.I. 14720(CAS DataBase Reference)
• NIST Chemistry Reference: C.I. 14720(3567-69-9)
• EPA Substance Registry System: C.I. 14720(3567-69-9)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-37/39
• WGK Germany: 2
• RTECS: QK1925000
• TSCA: Yes
• Hazardous Substances Data: 3567-69-9(Hazardous Substances Data)

Usage

Uses

Azo Rubine is an synthetic red food dye and is used for the purposes where food is heat-treated after fermentation.

Preparation

4-Aminonaphthalene-1-sulfonic acid diazo, coupled with the 4-Hydroxynaphthalene-1-sulfonic acid.

General Description

Reddish-brown crystals or dark maroon powder.

Air & Water Reactions

Can be explosive as a dust in air at certain concentrations. Moderately soluble in water.

Reactivity Profile

C.I. 14720 may form toxic gases 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. May form flammable gases 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 C.I. 14720 emits very toxic fumes of sulfur oxides, nitrogen oxides and Na2O.

Fire Hazard

Flash point data for C.I. 14720 are not available; however, C.I. 14720 is probably combustible.

Flammability and Explosibility

Notclassified

Properties and Applications

blue-ray red. Dark red powder, soluble in water, but soluble in ethanol red solution, slightly soluble in acetone. In a purple color of sulfuric acid, and it will dilute to product red precipitate; Nitric acid in deep red, turn red after yellow. Its water solution and strong hydrochloric acid red; Add sodium hydroxide fluid shows red orange brown. Dyeing copper ions in slightly dark color. Good levelness. Mainly used in strong acid dye in bath dyeing wool, wool fabrics can be in silk fabric, polyamide fiber and printing. The Barium salt can be used as organic pigment use. Also can be used in the manufacture color amylum, ink and used for leather, paper, soap, wood, electrical-controlled silver, medicine, biology and cosmetics shading. Standard Light Fastness Soaping Persperation Fastness Oxygen bleaching Fastness to seawater Fading Stain Fading Stain Fading Stain ISO 3 2 5 3 1 4-5 2 1 AATCC 3 3 3 2-3 1 1-2 3-4 3-4

Standard

Light Fastness

Fading

Stain

ISO

3

AATCC

3

InChI:InChI=1/C20H14N2O7S2.2Na/c23-20-15-8-4-3-7-14(15)19(31(27,28)29)11-17(20)22-21-16-9-10-18(30(24,25)26)13-6-2-1-5-12(13)16;;/h1-11,21H,(H,24,25,26)(H,27,28,29);;/q;2*+1/p-2/b22-17-;;

Synthetic route

1-hydroxy-4-naphthalenesulfonate (84-87-7) + diazotized naphthionic acid → azorubine (3567-69-9)

Conditions	Yield
With alkali
With alkali

butanoic acid anhydride (106-31-0) + azorubine (3567-69-9) → azorubin S butyrate (85679-82-9)

Conditions	Yield
In pyridine; N,N-dimethyl-formamide at 70 - 90℃; for 0.5h;

acetic anhydride (108-24-7) + azorubine (3567-69-9) → azorubin S acetate (85679-81-8)

Conditions	Yield
In pyridine; N,N-dimethyl-formamide at 70 - 90℃; for 0.5h;

azorubine (3567-69-9) → 2-amino-1-naphthol (606-41-7) + Na(1+)*C10H7O4S(1-)

Conditions	Yield
With iridium; hexacyanoferrate(III) In aq. phosphate buffer at 40℃; for 24h; pH=7.5; Catalytic behavior; Thermodynamic data; Activation energy; pH-value; Concentration; Reagent/catalyst; Temperature;

azorubine (3567-69-9) → 3-hydroxyphthalic acid (601-97-8) + 3-sulfophthalic acid (67892-43-7) + benzene-1,2-dicarboxylic acid (88-99-3)

Conditions	Yield
Stage #1: azorubine With titanium(IV) oxide In water at 50℃; for 2h; Stage #2: With dihydrogen peroxide In water Catalytic behavior;

copper(II) choride dihydrate + azorubine (3567-69-9) → [Cu(carmoisine)2(H2O)2]

Conditions	Yield
With triethylamine In deuteromethanol for 4h; Reflux;

Upstream product

• 84-87-7 1-hydroxy-4-naphthalenesulfonate 

Downstream Products

• 606-41-7 2-amino-1-naphthol 
• 601-97-8 3-hydroxyphthalic acid 
• 67892-43-7 3-sulfophthalic acid 
• 88-99-3 benzene-1,2-dicarboxylic acid