Chinese english Japanese Germany Korea
ChemicalBook > Product Catalog >Dyes and Pigments >dye >Direct Dyes >Direct Black 19

Direct Black 19

Direct Black 19 Structure
CAS No.
6428-31-5
Chemical Name:
Direct Black 19
Synonyms
Black G;C.I.35255;RIFAZOLBLACKGR;Direct Black 19;Kayarus Black G;Direct black RN;Sumilight Black G;Condires Black AN;Vicorect Black FB.;Benzo Fast Black G
CBNumber:
CB4875556
Molecular Formula:
C34H30N13NaO7S2
Molecular Weight:
819.81
MOL File:
6428-31-5.mol
MSDS File:
SDS
Modify Date:
2023/5/4 15:16:48
Request For Quotation

Direct Black 19 Properties

Boiling point 1379℃[at 101 325 Pa]
Density 1.49[at 20℃]
vapor pressure 0Pa at 25℃
Water Solubility 22.67g/L at 20℃
LogP -1.5 at 20℃
CAS DataBase Reference 6428-31-5(CAS DataBase Reference)
EPA Substance Registry System C.I. Direct Black 19, disodium salt (6428-31-5)

SAFETY

Risk and Safety Statements

Symbol(GHS) 
GHS07
Signal word  Warning
Hazard statements  H315-H335-H319
Precautionary statements  P264-P280-P305+P351+P338-P337+P313P-P264-P280-P302+P352-P321-P332+P313-P362

Direct Black 19 Chemical Properties,Uses,Production

Preparation

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.

Properties and Applications

green and black. Black powder. Soluble in water for green light black, solubility of 100 g/L (80 ℃), slightly soluble in ethanol and acetone. The strong sulfuric acid in the green light for black, dilute red after black precipitation; In nitric acid to dark brown. Dyes and microstructure of sulfuric acid solution 10% red; Add thick sodium hydroxide solution for green light blue. Copper ions in dyeing color shade the green, iron ion a slight change in color. Used in viscose of dyeing and printing. In the cotton knitwear, blankets, flannelette, silk, viscose, silk that the fabric, wool/viscose fiber blend fabrics can be used. Can also be used in leather, paper and electrochemical aluminum color.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 4 3 3-4 2 2
AATCC 4-5 3 3 2-3 2

Direct Black 19 Preparation Products And Raw materials

Raw materials

Sodium sulfide Sodium nitrite m-Phenylenediamine 4-Nitroaniline Sodium carbonate
8-Amino-1-naphthol-3,6-disulfonic acid monosodium salt monohydrate m-Phenylenediamine 4-Nitroaniline
chevron_left

1of2

chevron_right

Preparation Products

Direct Black 19 Suppliers

Global( 139)Suppliers
Supplier Tel Country ProdList Advantage Inquiry
MaheshRaj Chemicals Pvt Ltd +91 7926870597 Gujarat, India 96 58 Inquiry
Hina DyeChem Industries +91-9537203924 +91-9537203924 Ahmedabad, India 168 58 Inquiry
Shidimo Interaux Private Limited +91-9879759686 +91-9879759686 Gujarat, India 79 58 Inquiry
Neema Chemicals +91-8140106252 +91-9825484478 Gujarat, India 190 58 Inquiry
Rikin Industries +91-7926588543 +91-7926588543 Gujarat, India 130 58 Inquiry
Tanya Exports +91-9825040588 +91-9825033002 Gujarat, India 186 58 Inquiry
Appex Dye Stuff Industries +91-9974922439 +91-9974922439 Gujarat, India 146 58 Inquiry
Colorants Chem Pvt Ltd +91-9890098067 +91-9890036907 Mumbai, India 200 58 Inquiry
Vipul Organics Ltd +91-2266139999 +91-2266139999 Maharashtra, India 277 58 Inquiry
Bodal Chemicals Ltd +91-9909950857 +91-9825034567 Gujarat, India 132 58 Inquiry
Supplier Advantage
MaheshRaj Chemicals Pvt Ltd 58
Hina DyeChem Industries 58
Shidimo Interaux Private Limited 58
Neema Chemicals 58
Rikin Industries 58
Tanya Exports 58
Appex Dye Stuff Industries 58
Colorants Chem Pvt Ltd 58
Vipul Organics Ltd 58
Bodal Chemicals Ltd 58

6428-31-5(Direct Black 19)Related Search:

DIRECT RED 80 Direct Black 168 Direct Orange S Direct Yellow 12 Direct Black 38
Iron Oxide Green DIAMINE GREEN B CHLORAZOL VIOLET N BRILLIANT YELLOW Direct Red 31
DIRECT FAST BROWN M STILBENE YELLOW CI NO 22610 Direct Red 23 DIRECT BLUE 15
Direct Blue 86 Direct Black 166 DIRECT BLACK 22
chevron_left

1of4

chevron_right
disodium 4-amino-3,6-bis[[4-[(2,4-diaminophenyl)azo]phenyl]azo]-5-hydroxynaphthalene-2,7-disulphonate Black G Atul Direct Black VG Benzo Fast Black G Condires Black AN Kayarus Black G Sumilight Black G Tertrodirect Viscose Black GTN Vicorect Black FB. Direct Black 19 2,7-Naphthalenedisulfonic acid, 4-amino-3,6-bis4-(2,4-diaminophenyl)azophenylazo-5-hydroxy-, disodium salt RIFAZOLBLACKGR Direct black 19 (C.I. 35255) 1-Hydroxy-8-amino-2,7-bis[[4-[(2,4-diaminophenyl)azo]phenyl]azo]-3,6-naphthalenedisulfonic acid disodium salt 4-Amino-3,6-bis[[4-[(2,4-diaminophenyl)azo]phenyl]azo]-5-hydroxynaphthalene-2,7-disulfonic acid disodium salt C.I.35255 C.I.Direct Black 19:C.I.35255 Direct Fast Black G (C.I. Direct Black 19) Direct Black 19 ISO 9001：2015 REACH DIRECT BLACK 19 LIQUID 2,7-Naphthalenedisulfonic acid, 4-amino-3,6-bis[2-[4-[2-(2,4-d iaminophenyl)diazenyl]phenyl]diazenyl]-5 -hydroxy-, sodium salt (1:2) Direct black RN Direct Black 19, DIrect Fast Black G 4-Amino-3,6-bis((4-((2,4-diaminophenyl)diazenyl)phenyl)diazenyl)-5-hydroxynaphthalene-2,7-disulfonic acid, sodium salt 6428-31-5 C34H27Na2O7S2 C34H27N13Na2O7S2 C34H27N13O7S22Na C34H27N13Na2S2O7 Organics Dyes and Pigments