Zibo Hongwei Industry Co., Ltd.

Direct Dyes, Direct Blue 2, Reactive Dye manufacturer / supplier in China, offering Direct Blue Bh, Direct Blue 2, Acid Cellulase, Neutral Cellulase, Acid Cellulase Enzyme, Textile Enzyme and so on.

Supplier Homepage Product List direct dyes Direct Blue Bh, Direct Blue 2

Direct Blue Bh, Direct Blue 2

FOB Price:US $1 / kg
Min. Order (kg) FOB Price
100+ US $1 / kg
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Min. Order: 100 kg
Production Capacity: 5000mt/Mon
Transport Package: 25kg/Bag
Payment Terms: L/C, T/T, D/P

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Basic Info.

Model NO.:100%
Colour:Blue
Appearance:Powder
Usage:Paper, Ink, Leather, Textile
Application Material:Cotton, Viscose, Silk, Leather and Pulp Color.
Content:100%
Trademark:hongwei
Origin:Shandong

Product Description

Name:C.I.Direct Blue 2,C.I.22590

Molecular Structure: Double azo class......

C.I.Direct Blue 2,C.I.22590,CAS 2429-73-4,830.71,C32H21N6Na3O11S3,Direct Blue BH,Direct Diazo Black BH

Molecular Formula:C32H21N6Na3O11S3

Molecular Weight: 830.71

CAS Registry Number:2429-73-4

Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, in alkaline conditions respectively with the 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling.

StandardAcid ResistanceAlkali ResistanceLight FastnessSoapingWater
FadingStainFadingStain
ISO4422 2 
AATCC3333 3 
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Zibo Hongwei Industry Co., Ltd.

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