Basic information Safety Supplier Related

ACID RED 4

Basic information Safety Supplier Related

ACID RED 4 Basic information

Product Name:
ACID RED 4
Synonyms:
  • 1-Naphthalenesulfonicacid,4-hydroxy-3-[(2-methoxyphenyl)azo]-,monosodiumsalt
  • 4-hydroxy-3-[(2-methoxyphenyl)azo]-1-naphthalenesulfonicacimonosodiumsal
  • acidred4(c.i.14710)
  • ACID RED 4
  • CI 14710
  • AZO EOSIN
  • Acid Red 4 (C.I.)
  • C.I. Acid Red 4
CAS:
5858-39-9
MF:
C17H13N2NaO5S
MW:
380.35
EINECS:
227-490-0
Product Categories:
  • Organics
Mol File:
5858-39-9.mol
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ACID RED 4 Chemical Properties

EPA Substance Registry System
C.I. Acid Red 4, monosodium salt (5858-39-9)
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Safety Information

WGK Germany 
3

MSDS

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ACID RED 4 Usage And Synthesis

Definition

ChEBI: An organic sodium salt having 4-hydroxy-3-[(2-methoxyphenyl)diazenyl]naphthalene-1-sulfonate as the counterion.

Preparation

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

Properties and Applications

red. Soluble in water for red, soluble in acetone, slightly soluble in ethanol (orange) and toluene. The strong sulfuric acid to red light purple, diluted red for quality. In water solution to join strong hydrochloric acid have dark red precipitate; Add nitric acid have blue-ray red precipitation, first into a brown, then yellow; Add thick sodium hydroxide solution color change.

Standard Light Fastness Soaping Persperation Fastness Oxygen bleaching Fastness to seawater
Fading Stain Fading Stain Fading Stain
ISO 5 2-3 2-3 2-3
AATCC 4 1 3 1 1

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