Zibo Hongwei Industry Co., Ltd.

Direct Dyes, Direct Violet 4, Reactive Dye manufacturer / supplier in China, offering Sirius Red Violet Rl, Direct Violet 4, Acid Cellulase, Neutral Cellulase, Acid Cellulase Enzyme, Textile Enzyme and so on.

Supplier Homepage Product List direct dyes Sirius Red Violet Rl, Direct Violet 4

Sirius Red Violet Rl, Direct Violet 4

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:Violet
Appearance:Powder
Usage:Paper, Ink, Leather, Textile
Application Material:Cotton Textile
Mf:C32h22n6na2o8s2
Trademark:hongwei
Origin:Shandong

Product Description

Name:C.I.Direct Violet 4,C.I.22555

Molecular Structure: Double azo class

C.I.Direct Violet 4,C.I.22555,CAS 6472-95-3,728.66,C32H22N6Na2O8S2,Sirius Red Violet RL

Molecular Formula:C32H22N6Na2O8S2

Molecular Weight: 728.66

CAS Registry Number:6472-95-3

Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, first in acid conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling, and then in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling.

StandardAcid ResistanceAlkali ResistanceLight FastnessSoapingWater
FadingStainFadingStain
ISO1531-2 2 
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Zibo Hongwei Industry Co., Ltd.

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