dye|World dye variety

Name:C.I.Direct Black 32,C.I.35440

Molecular Structure: Multi-azo class

C.I.Direct Black 32,C.I.35440,CAS 6428-38-2,1172.08,C48H40N13Na3O13S3,Direct Black 2B,Direct Fast Black NRA,Direct Black BO

Molecular Formula:C₄₈H₄₀N₁₃Na₃O₁₃S₃

Molecular Weight: 1172.08

CAS Registry Number:6428-38-2

Manufacturing Methods :  5-Amino-2-(4-aminophenylamino)benzenesulfonic acid double nitriding, in alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid  (2 Moore) coupled, product to double nitriding, and 2-(3-Aminophenylamino)ethanol (2 Moore) coupled.

Properties and Applications: black. Grey to black powder. The strong sulfuric acid for red purple, after dilute black purple precipitation; In strong hydrochloric acid in black precipitation; In the thick of sodium hydroxide solution dark purple precipitation. Mainly used for cotton, such as glue cellulose fiber fabric and silk dyeing and printing. Used for sweet silk and viscose interwoven fabric dyeing.

List of Suppliers:

Black 2S ( Joint Stock Company ‘Coioros’ )

Cotonerol AB (CBW Chemie GmbH Bitterfeld-Wolfen)

Diazol Fast Black JRA DBL (Classic Dyestuffs Inc)

Dinamine Fast Black AB (Dintex Dyechem Ltd)

Direct Black 2B ( Joint Stock Company ‘Coioros’ )

Direct Black ABR (Colorom SA)

Direct Black ABS(Chemische Fabriek Triade BV)

Direct Black BO(Boruta – Kolor)

Direct Fast Black NRA ( S A des Ets. Steiner )

Permalite Fast Black AB 500% ( Standard Dyes )

Sakoton Black 2S ( Sivashdky Dye Plant )

Sakoton Black Light Fast ( Sivashdky Dye Plant )

Tertrodirect Black RA(Yorkshire Group pic)