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Direct Black 80

Name:C.I.Direct Black 80,C.I.31600

Molecular Structure: trisazo class

C.I.Direct Black 80,C.I.31600,CAS 8003-69-8,908.78,C36H23N8Na3O11S3,Direct Black OB,Direct Black TOB

C.I.Direct Black 80,C.I.31600,CAS 8003-69-8,908.78,C36H23N8Na3O11S3,Direct Black OB,Direct Black TOB

Molecular Formula:C36H23N8Na3O11S3

Molecular Weight: 908.78

CAS Registry Number:8003-69-8

Manufacturing Methods :  N-(4-aminophenyl)acetamide diazo, The reduction of the conditions with 6-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling, acylation, three amino nitrogen, which then double first and 5-Aminonaphthalene-2-sulfonic acid and 8-Aminonaphthalene-2-sulfonic acid, again in three alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid  coupling.

Properties and Applications:  black. Blue-black uniform powder. Soluble in water for a blue-black, insoluble in organic solvents. The strong sulfuric acid for blue, purple precipitation after diluted; In nitric acid solution for yellow light red; Partly dissolved in strong hydrochloric acid for purple. The dye solution to join 10% sodium hydroxide solution for red light blue. Used for cellulose fiber dyeing, also can be used for paper and leather color.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 4 4-5 2 3-4 3-4
AATCC 3 5 3 3 4

List of Suppliers:

Direct Black OB,Direct Black TOB

Shandong Qing Shun Chemical Co., Ltd.

Tianjin Yadong Group

ACDI Black OB 200%(Aakash Chemicals & Dyestuffs Inc)

ACDI Diazo Black OB 150%(Aakash Chemicals & Dyestuffs Inc)

Ambidirect Black OB ( Thai Ambica Chemicals Co Ltd )

Arid Black OB 200% ( Aashiana Dyestuffs Inc )

Atul Black NB-OB ( Atul Limited )

Benzo Black OB-V ( Bayer Group )

Best Direct Black OB ( Oriental Giant Dyes and Chemical Ind Corp )

Black OB(Hangzhou Dikai Chemical Co Ltd)

Classic Direct Black 80 150% (Classic Dyestuffs Inc)

Colozal Black OB ( Color Synth Industries Ltd )

Columbia Fast Black BV(CBW Chemie GmbH Bitterfeld-Wolfen)

Diazo Black OB( Frado )

Diazo Black OB(Yorkshire Group pic)

Diazo Black OB( Global Colors Inc. )

Diazo Black OB(Classic Dyestuffs Inc)

Dinamine Diazo Black NB-OB(Dintex Dyechem Ltd)

Direct Black(Sinochem Liaoning Import & Export Corporation)

Direct Black OB( Indo Colchem Ltd )

Direct Black OB (Chemische Fabriek Triade BV)

Direct Black OB ( Greenwood Products Inc. )

Direct Black OB ( Day-Glo Color Corp. )

Direct Black OB( Metrochem Industries Ltd )

Direct Black OB 150% (Classic Dyestuffs Inc)

Direct Black OBN ( Cosmonaut. Chemicals )

Direct Black TOB(Nanjing Chemicals Import and Export Corp)

Direct Black TOB(Brighten Colorchem BV)

Direct Fast Black OB (Fenchem Enterprises Ltd)

Direct Fast Black TOB (Sinochem Ningbo Imp & Exp Corp)

Doramin Black BO Conc. ( D&G Dyes Inc. )

Dycosdirect Black TOB (Sinochem Shanghai I/E Corp/Schecho PuDong Corporation)

Dynarect Black HO ( Dynamic Industries Ltd )

Dyrite Black OB 150/200% ( Rite Industries Inc. )

Fabramine Black OB 200% ( Fabricolor Inc. )

Hariect Diazo OB ( Bhavi International Ltd )

Leadirect Black OB 150/200% ( Leadertech Colors Inc. )

MVdirect Black OB ( MV Products Inc. )

Orco Diazo Black OB 150/200%( Organic Dyestuffs Corp )

Permalite Black OB 150%( Standard Dyes )

Permalite Black OBC 200% ( Standard Dyes )

Pyrazol Black BG ( Clariant GmbH )

Satum Black OB(SBU Pigments and Dyes)

Sirius Black OB 200%(Classic Dyestuffs Inc)

Usharect Black 80( Ushanti Colour Chem Pvt Ltd )

Vicorect Diazo Black OB(Victory Colour Chem Industries)


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