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HomeProduct name listACID RED 4

ACID RED 4

  • CAS NO.:5858-39-9
  • Empirical Formula: C17H13N2NaO5S
  • Molecular Weight: 380.35
  • MDL number: MFCD00003939
  • EINECS: 227-490-0
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2023-04-23 13:52:06
ACID RED 4 Structural

What is ACID RED 4?

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

Properties of ACID RED 4

Melting point: >210°C(dec.)
storage temp.  Amber Vial, Refrigerator, Under inert atmosphere
solubility  Methanol (Slightly)
form  Solid
color  Red
EPA Substance Registry System C.I. Acid Red 4, monosodium salt (5858-39-9)

Safety information for ACID RED 4

Computed Descriptors for ACID RED 4

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