dye|World dye variety

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

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.

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)