dye|World dye variety

Name:C.I.Direct Black 103,C.I.34179

Molecular Structure: trisazo class

C.I.Direct Black 103,C.I.34179,CAS 3071-71-4/25180-17-0,1029.87,C36H21N6Na3O11S3,Direct Fast Black 2BL,Direct Fast Grey L,Direct Grey Light Fast

Molecular Formula:C₃₆H₂₁N₆Na₃O₁₁S₃

Molecular Weight: 1029.87

CAS Registry Number:3071-71-4/25180-17-0

Manufacturing Methods : 3-Aminonaphthalene-1,5-disulfonic acid diazo, and Naphthalen-1-amine coupling, again diazo, and 8-Aminonaphthalene-2-sulfonic acid coupling, product to diazo, in alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid  coupling.

Properties and Applications: blue grey. To black uniform powder. Soluble in water for violet solution, not soluble in alcohol. The strong sulfuric acid in the green light for gray blue, for purple diluted. The dye solution to join strong hydrochloric acid as dark blue precipitation; Add thick hydrogen oxidation sodium solution blue-purple precipitation. Cellulose fiber of dyeing, the dye absorption rates generally do, in 100 ℃ temperature when the biggest affinity, good levelness. Dyeing copper ions in without the should be, not sensitive to that fights. Mainly used for cotton, viscose, silk and wool/stick blended fabric dyeing and printing.

List of Suppliers:

Diazol Light Grey 4B ( Francolor Pigments SA )

Direct Fast Black 2BL (Sinochem Ningbo Imp & Exp Corp)

Direct Fast Grey L ( Sintofarm SA )

Direct Grey Light Fast ( Joint Stock Company ‘Coioros’ )

Vopsider Grey DL( Sintofarm SA )