Zibo Hongwei Industry Co., Ltd.

Direct Black 19, Direct Black L-3bq, Direct Fast Black manufacturer / supplier in China, offering Direct Black 19, Direct Fast Black G, Acid Cellulase, Neutral Cellulase, Acid Cellulase Enzyme, Textile Enzyme and so on.

Supplier Homepage Product List direct dyes Direct Black 19, Direct Fast Black G

Direct Black 19, Direct Fast Black G

FOB Price:US $2 / kg
Min. Order (kg) FOB Price
300+ US $2 / kg
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Min. Order: 300 kg
Production Capacity: 2000mt/Year
Transport Package: 25kg/Drum, 25kg/Bag
Payment Terms: L/C, T/T, D/P, Paypal, Money Gram, Western Union

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Basic Info.

Model NO.:19
Colour:Black
Appearance:Powder
Usage:Paper, Ink, Leather, Textile
Application Material:Cotton, Viscose, Silk, Leather and Pulp Color.
Name:Direct Black 19
Content:100%
C.I.No.:C.I.35255
Molecular Formula:C34h27n13na2o7s2
Molecular Weight:839.77
CAS:6428-31-5
Trademark:hongwei
Specification:CE SGS
Origin:Shandong

Product Description

Name:C.I.Direct Black 19,C.I.35255

Molecular Structure: Multi-azo class
 
C.I.Direct Black 19,C.I.35255,CAS 6428-31-5,839.77,C34H27N13Na2O7S2,Direct Black L-3BQ,Direct Fast Black,Direct Fast Black FF,Direct Fast Black G,Pergasol Black G

Molecular Formula:C34H27N13Na2O7S2

Molecular Weight: 839.77

CAS Registry Number:6428-31-5

Manufacturing Methods : 4-Nitrobenzenamine (2 Moore) diazo, one in acid conditions, a in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid (1 Moore) coupling, and then will the nitro reduction, diazotization, again with Benzene-1,3-diamine (2 Moore) coupled.
 
StandardAcid ResistanceAlkali ResistanceLight FastnessSoapingWater
FadingStainFadingStain
ISO433-42
2
AATCC4-5332-3
2
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