 Home > Dyes and Pigments > Dye > Direct Black 19 for Sale > Factory Supply Dyesky Dyestuff Direct Black 19 for Ink Paper Leather Dyeing Direct Black 19

Factory Supply Dyesky Dyestuff Direct Black 19 for Ink Paper Leather Dyeing Direct Black 19 buy - large image1

Factory Supply Dyesky Dyestuff Direct Black 19 for Ink Paper Leather Dyeing Direct Black 19 buy - image1

Factory Supply Dyesky Dyestuff Direct Black 19 for Ink Paper Leather Dyeing Direct Black 19 buy - image2

Factory Supply Dyesky Dyestuff Direct Black 19 for Ink Paper Leather Dyeing Direct Black 19 buy - image3

Factory Supply Dyesky Dyestuff Direct Black 19 for Ink Paper Leather Dyeing Direct Black 19 buy - image4

Factory Supply Dyesky Dyestuff Direct Black 19 for Ink Paper Leather Dyeing Direct Black 19

Unit Price:

$3500-4300/MT FOB

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CAS No.:

6428-31-5

Grade:

Industrial Grade

Content:

99%

Port:

Qingdao

Brand:

Packaging:

25 kg pp bag

Sample Available:

Yes

Price valid (until):

2026-10-28

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Shandong Guozhao Import and Export Co., Ltd.

Company Type:

Distributor

Location:

China

Qualification:

Main Products:

CHEMICALS

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Product Description
Seller Information

Description

Common N ame: Direct Black 19
Other Name:  Black G
CAS No.:  6428-31-5
EINECS No. :  229-208-1
C.I. No. : ---
Appearance: Black Powder
Molecular Formula: C34H27N13Na2O7S2
Brand Name :   Colorcom
Shelf Life:  2 Years
Place of Origin:  China

International Equivalents:

Direct black RN	Atul Direct Black VG
Benzo Fast Black G	Condires Black AN
Kayarus Black G	Sumilight Black G

Product physical properties :

Product N ame	Direct Black 19
Appearance	Black Powder
Test Method	AATCC	ISO
Acid Resistance	4-5	4
Alkali Resistance	3	3
Ironing	4-5	3
Light	3	3-4
Soaping	2-3	2
Water Resistance	2	2

Application:
Direct Black 19 is used for dyeing and printing adhesives, as well as for dyeing leather, paper, and aluminum electroplating. Inkjet printing ink can also be manufactured.

Package: 25 kgs/bag or as you request.
Storage: Store at a ventilated, dry place.
Execution Standards: International Standard.

Basic Info

Product Name:

Direct Black 19

Other Name:

2,7-Naphthalenedisulfonic acid,4-amino-3,6-bis[2-[4-[2-(2,4-diaminophenyl)diazenyl]phenyl]diazenyl]-5-hydroxy-,sodium salt (1:2);C.I. Direct Black 19,disodium salt;2,7-Naphthalenedisulfonic acid,4-amino-3,6-bis[[4-[(2,4-diaminophenyl)azo]phenyl]azo]-5-hydroxy-,disodium salt;C.I. 35255;Artificial Silk Black G;Artificial Silk Black GN;Artificial Silk Black GR;Atlantic Artificial Silk Black G;Bali Viscose Black G;Bencidal Fast Black G;Bali Viscose Black N;Benzanil Fast Black G;Benzo Fast Black G;Benzoform Black RRA-CF;Chlorazol Viscose Black B;Chrome Leather Black GNA;Columbia Fast Black G;Columbia Fast Black GB;Cutamin Black CG;Diamine Fast Black B;Diaphtamine Fast Black KG;Direct Artificial Silk Black G;Direct Fast Black G;Direct Fast Black GU;Direct Fast Black SA;Direct Rayon Black KSG;Fenamin Black GR;Formal Fast Black 2B;Hispamin Fast Black CG;Indoblack GR;Kayarus Black G;Phenamine Viscose Black RR;Pyrazol Fast Black GS;Rayon Black G;Rayon Black M;Rayon Black GSN;Rayon Fast Black B;Solar Black G;Sumilight Black G;Tertrodirect Black V;Tetrazo Deep Black GC Extra;Visco Black N;Viscose Black G;Viscose Black J;Viscose Black GNA;Viscose Black N;Viscose Black NG;Vondacel Black VG;Vondacel Black VN;C.I. Direct Black 19;Direct Black 19;Coranil Direct Black B;Water Black 100;Kayarus Black G Conc.;Water Black P 200;Water Black 200L;Orient Water Black 100L;Orient Water Black 200L;135151-56-3;69073-20-7;73944-27-1;76450-44-7;431058-20-7;148196-18-3

CAS No.:

6428-31-5

Molecular Formula:

C34H29N13O7S2.2Na

InChIKeys:

InChIKey=JUXVLJKHWACNJB-UHFFFAOYSA-N

Molecular Weight:

839.77062

Exact Mass:

839.139343

EC Number:

229-208-1

HScode:

3204140000

Categories:

Dye

Characteristics

PSA:

380.37000

XLogP3:

12.99380

Appearance:

DryPowder; Liquid

Density:

1.727g/cm3

Refractive Index:

1.817

See More Direct Black 19 Properties 

Hazard Identification

Classification of the substance or mixture

Not classified.

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)	No symbol.
Signal word	No signal word
Hazard statement(s)	none
Prevention	none
Response	none
Storage	none
Disposal	none

Other hazards which do not result in classification

no data available

Handling and Storage

Precautions for safe handling

Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Conditions for safe storage, including any incompatibilities

Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.

See More Direct Black 19 Safety Data Sheet 

Seller Information

Business Type:
Distributor

Main Products:
CHEMICALS

Location:
No. 109, Chailu Street, Qingnian Park Subdistrict, Huaian District, Jinan City, Shandong Province 280

Year of Establishment:
2026

Shandong Guozhao Import and Export Co., Ltd., located at No. 280, Chalu Street, Qingnian Park Subdistrict, Huaiyin District, Jinan City, Shandong Province, primarily engages in import and export of goods; sales of chemical products (excluding licensed chemical products); sales of specialty chemical products (excluding hazardous chemicals); sales of plastic products; sales of metal products; sales of building materials; sales of architectural decoration materials; sales of daily-use chemical products; sales of food additives; sales of feed additives; sales of fertilizers; sales of batteries; and general cargo warehousing services (excluding items requiring licensing or approval, such as hazardous chemicals).
Country Product Purchase Quantity Date Posted

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Factory Supply Dyesky Dyestuff Direct Black 19 for Ink Paper Leather Dyeing Direct Black 19

Product Description

Seller Information

Classification of the substance or mixture

GHS label elements, including precautionary statements

Other hazards which do not result in classification

Precautions for safe handling

Conditions for safe storage, including any incompatibilities

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