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Direct Red 79

Name:C.I.Direct Red 79,C.I.29065

Molecular Structure: Double azo class

C.I.Direct Red 79,C.I.29065,CAS 1937-34-4,1048.87,C37H28N6Na4O17S4,Direct Fast Red 4BL,Direct Light Red 6B,Direct Red 6BL,Solophenyl Red 6BL

C.I.Direct Red 79,C.I.29065,CAS 1937-34-4,1048.87,C37H28N6Na4O17S4,Direct Fast Red 4BL,Direct Light Red 6B,Direct Red 6BL,Solophenyl Red 6BL

Molecular Formula:C37H28N6Na4O17S4

Molecular Weight: 1048.87

CAS Registry Number:1937-34-4

Manufacturing Methods : 4-Amino-5-(tosyloxy)naphthalene-2,7-disulfonic acid diazo, and 2-Amino-4-methylanisole coupling, and then hydrolysis p-toluene sulfonic acid ester base, and light gasification.

Properties and Applications: colourful red blue light. Soluble in water for red to blue light red, solubility 15 g/L (60 ℃) / 24 g/L (97 ℃), slightly soluble in ethanol and soluble fiber element, insoluble in other organic solvents. The strong sulfuric acid in blue, diluted for purple; In nitric acid solution for blue-black, then into blue, again into purple. The dye solution with strong hydrochloric acid have blue light green precipitation; Add thick sodium hydroxide solution for yellow orange. Water-soluble is good, hard to sensitive. For colourful red light blue light. In dye bath of copper, iron ions in a slight change color. SDC classification for a class B, neutral white is very good, alkaline white.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 4 3-4 6 3 3
AATCC 5 3 6 3 3

List of Suppliers:

Direct Fast Red 4BL Tianjin Yadong Group

ACDI Fast Red 6BLL(Aakash Chemicals & Dyestuffs Inc)

ACDI Red 6BL(Aakash Chemicals & Dyestuffs Inc)

Atul Direct Supra Light Fast Red 6B ( Atul Limited )

Classic Direct Red 79 100% (Classic Dyestuffs Inc)

Direct Fast Red 4BL(Sinochem Ningbo Imp & Exp Corp)

Direct Fast Red 4BL (Fenchem Enterprises Ltd)

Direct Light Red 6B ( S A des Ets. Steiner )

Direct Red 6BL( Global Colors Inc. )

Direct Red 6BLL(Classic Dyestuffs Inc)

Doramin Light Red 6B 200%( D&G Dyes Inc. )

Dyrect Fast Red 6BD ( Albion Colours Ltd)

Dyrite Red 6BLL ( Rite Industries Inc. )

Fabramine Red 6BLL ( Fabricolor Inc. )

Helion Red 6BL ( Ciech SA )

Intralite Red 6 BLL (Yorkshire Group pic)

Intralite Red 6BLL Crude (Classic Dyestuffs Inc)

Kayarus Supra Red 6BL (Nippon Kayak u Co Ltd)

Orcolitefast Red 6BLL ( Organic Dyestuffs Corp )

Permalite Red 6BL 167% ( Standard Dyes )

Permalite Red 6BLL ( Standard Dyes )

Permalite Red 6BLL-V( Standard Dyes )

Saturn Red L4B (SBU Pigments and Dyes)

Simrect Red 24938 (Simpsons (UK) Ltd)

Sirius Supra Red 4BL ( Bayer Group )

Solar Red 2BL( Clariant GmbH )

Solius Light Red 6BL ( Frado )

Solophenyl Red 6BL-01 ( Ciba Specialty Chemicals Inc )

Sumilight Supra Red 4BL(B)( Sumitomo Chemical Co. Ltd )

Tertfodirect Light Red 6B(Yorkshire Group pic)

Triamin Red 4BL(Chemische Fabriek Triade BV)


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