dye|World dye variety

Name:C.I.Direct Brown 44,C.I.35005

Molecular Structure: Multi-azo class

C.I.Direct Brown 44,C.I.35005,CAS 6252-62-6,758.7,C30H24N12Na2O6S2,Direct Brown NB,Direct Brown SL,Direct Brown 3G

Molecular Formula:C₃₀H₂₄N₁₂Na₂O₆S₂

Molecular Weight: 758.7

CAS Registry Number:6252-62-6

Manufacturing Methods :2 moles of nitrous acid treatment with 3 moles of  Benzene-1,3-diamine dihydrochloride (This product may be based on the disazo dye mixture as the main ingredient, and commercial dyes are usually composed by a dihydrochloride). And its product   (C.I. Basic Brown 1, C.I. 21000) as coupling component and diazotized 4-Aminobenzenesulfonic acid (2 mol) coupling

Properties and Applications: brown. Soluble in water for brown, soluble in ethanol and acetone. The strong sulfuric acid for palm to black, diluted for orange brown, there is a fine precipitation. The dye solution to join 10% sodium hydroxide solution more red light. Apply to the cellulose fibre paper printing and dyeing and color.

List of Suppliers:

Direct Brown SL,Direct Brown 3G

Shandong Qing Shun Chemical Co., Ltd.

Tianjin Yadong Group

ACDI Brown GSX (Aakash Chemicals & Dyestuffs Inc)

Brown GSV ( Manuel Vilaseca SA )

Carta Brown SBN ( Clariant GmbH )

Direct Brown (Fenchem Enterprises Ltd)

Direct Brown 3G (Colorom SA)

Direct Brown GSX( Global Colors Inc. )

Direct Brown NB ( Sharda International )

Direct Brown NB (Yorkshire Group pic)

Direct Brown Y( National Dyechem Industries )

Fabramine Brown GSX New ( Fabricolor Inc. )

Hispamin Brown 2GRF ( S A Robama )

Leadirect Brown GSX Pdr/Liq ( Leadertech Colors Inc. )

Nippon Kagaku Direct Paper Brown SL ( Kaseihin Kogyo Kyokai )

Vopsider Brown D3G(Colorom SA)