3567-66-6

Basic information

• Product Name: AZOFUCHSIN
• Synonyms: 7-naphthalenedisulfonicacid,4-amino-5-hydroxy-6-phenylazo-disodiumsalt;7-naphthalenedisulfonicacid,5-amino-4-hydroxy-3-(phenylazo)-disodiumsalt;abcolazofuchsine;acetylredb;acidfuchsinfastb;acidred2a;acidredb;amacidfuchsine4b
• CAS NO: 3567-66-6
• Molecular Formula: C₁₆H₁₀N₃O₇S₂*3Na
• Molecular Weight: 467.38
• EINECS: 222-656-9
• Product Categories: Dyestuff;Organics
• Mol File: 3567-66-6.mol
• Article Data: 1

Chemical Properties

• Boiling Point: °Cat760mmHg
• Flash Point: °C
• Appearance: solid
• Density: g/cm³
• Refractive Index: 1.747
• Water Solubility: 54.45g/L at 26℃
• Stability: Stable. Incompatible with strong oxidizing agents.
• CAS DataBase Reference: AZOFUCHSIN(CAS DataBase Reference)
• NIST Chemistry Reference: AZOFUCHSIN(3567-66-6)
• EPA Substance Registry System: AZOFUCHSIN(3567-66-6)

Safety Data

• RTECS: QJ6197000
• Hazardous Substances Data: 3567-66-6(Hazardous Substances Data)

Usage

Chemical Properties

solid

Preparation

aniline diazo, and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?in alkaline conditions coupled.

Flammability and Explosibility

Nonflammable

Properties and Applications

red. Soluble in water, slightly soluble in ethanol for scarlet. For the strong sulfuric acid in scarlet, diluted for orange red; In nitric acid solution for palm chestnut. In water solution to join strong hydrochloric acid for red; Add thick sodium hydroxide solution for red light brown; Join rare sodium hydroxide solution for brick red. Standard Light Fastness Soaping Persperation Fastness Oxygen bleaching Fastness to seawater Fading Stain Fading Stain Fading Stain ISO 2 2-3 2 2 2-3 AATCC 2-3 2-3 1 1 4

Standard

Light Fastness

Fading

Stain

ISO

2

AATCC

2-3

InChI:InChI=1/C16H13N3O7S2/c17-12-8-11(27(21,22)23)6-9-7-13(28(24,25)26)15(16(20)14(9)12)19-18-10-4-2-1-3-5-10/h1-8,18H,17H2,(H,21,22,23)(H,24,25,26)/b19-15-

Upstream product

• 90-20-0 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid 
• 62-53-3 aniline 

Relevant articles and documents

Spectrophotometric Determination of Aromatic Amines by the Diazotization-Coupling Technique with 8-Amino-1-hydroxynaphthalene-3,6-disulfonic Acid and N-(1-Naphthyl)ethylenediamine as the Coupling Agents

A comprehensive study is made of the application of the diazotization-coupling spectrophotometric technique to the determination of diverse aromatic amines, using H-acid (8-amino-1-hydroxynaphthalene-3,6-disulfonic acid) and N-(1-naphthyl)ethylenediamine (also called N-(1-naphthalenyl)-1,2-ethanediamine or N-na) as the coupling agents.The methods were tested successfully on halogenate anilines, 2,4-dichloroaniline, nitroanilines, methylanilines, aminobenzoic acids, aminobenzenesulfonic acids, sulfanilamide, and certain other substituted anilines.The methods are not rec ommended for phenylenediamines and aminophenols, which produce little or no color.The aromatic amines containing negative groups tend to couple and produce colors more readily than aromatic amines not containing such groups.The amount of reagent and time required for full color development is less for aromatic amines containing negative groups, specially for the N-na method.Both methods are about equal in accuracy but the N-na mathod is on the average about 1.6 times more sensitive than the H-acid method.