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Acid Red 4

Name:C.I.Acid Red 4,C.I.14710

Molecular Structure: Single azo class

C.I.Acid Red 4,C.I.14710,CAS 5858-39-9,380.35,C17H13N2NaO5S,Acid Eosine G,Eosine G,Acid Pink B,Fast Scarlet B,Red B

C.I.Acid Red 4,C.I.14710,CAS 5858-39-9,380.35,C17H13N2NaO5S,Acid Eosine G,Eosine G,Acid Pink B,Fast Scarlet B,Red B

Molecular Formula:C17H13N2NaO5S

Molecular Weight: 380.35

CAS Registry Number:5858-39-9

Manufacturing Methods :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

List of Suppliers:

Acid Eosine G ( Global Colors Inc. )

Akacid Eosine G(Aakash Chemicals & Dyestuffs Inc)

Atlantic Acid Eosine G(Yorkshire Group pic)

Atul Acid Pink B ( Atul Limited )

Bemacid Red EN ( Berncolors-Poughkeepsie Inc )

Burconyl Eosine G (Classic Dyestuffs Inc)

Classic Acid Red 4 (Classic Dyestuffs Inc)

Colocid Fast Scarlet B( Color Synth Industries Ltd )

Concorde Acid Eosine G( I-HWA Industrial Corp )

Dinacid Pink B(Dintex Dyechem Ltd)

Dycosacid Red B(Sinochem Shanghai I/E Corp/Schecho PuDong Corporation)

Fabracid Red S-EN Conc. ( Fabricolor Inc. )

Orcoacid Eosine G ( Organic Dyestuffs Corp )

Orcoacid Eosine G (Classic Dyestuffs Inc)

Permalon Red 4 ( Standard Dyes )

Permalon Red EN ( Standard Dyes )

Red B (Hangzhou Dikai Chemical Co Ltd)

Ricoamide Eosine G 200% ( Rite Industries Inc. )

Triacid Azoeosine E(Chemische Fabriek Triade BV)


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