ChemicalBook >> CAS DataBase List >>Direct Black 19
Direct Black 19
- 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
- MDL Number:
- MFCD00137529
- MOL File:
- 6428-31-5.mol
- MSDS File:
- SDS
Last updated:2026-01-13 11:19:56
| Product description | Number | Pack Size | Price |
| DIRECT BLACK 19 (C.I.35255) AldrichCPR | S12174 | 1 unit | $197 |
| DIRECT BLACK 19 (C.I.35255) AldrichCPR | S12174 | 250mg | $179 |
| Direct Black 19 | FD44459 | 1kg | $250 |
| DIRECT BLACK 19 95.00% | DYE0002793 | 5MG | $503.84 |
| Direct Black 19 | FD44459 | 50g | $40 |
| More product size | |||
| Boiling point | 1379℃[at 101 325 Pa] |
|---|---|
| Density | 1.49[at 20℃] |
| vapor pressure | 0Pa at 25℃ |
| Water Solubility | 22.67g/L at 20℃ |
| InChIKey | BRZPIOXDFJITBK-FVFGOVLKSA-N |
| SMILES | NC1=C(C(S(O)(=O)=O)=CC2=CC(S(O)(=O)=O)=C(/N=N/C3C=CC(/N=N/C4C=CC(N)=CC=4N)=CC=3)C(O)=C12)/N=N/C1C=CC(/N=N/C2C=CC(N)=CC=2N)=CC=1.[NaH] |
| LogP | -1.5 at 20℃ |
| CAS DataBase Reference | 6428-31-5(CAS DataBase Reference) |
| FDA UNII | B91N7SNH1C |
| 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 |
| TSCA | TSCA listed |
| Hazardous Substances Data | 6428-31-5(Hazardous Substances Data) |
Direct Black 19 price More Price(8)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | S12174 | DIRECT BLACK 19 (C.I.35255) AldrichCPR | 1 unit | $197 | 2026-03-19 | Buy | |
| Sigma-Aldrich | S12174 | DIRECT BLACK 19 (C.I.35255) AldrichCPR | 6428-31-5 | 250mg | $179 | 2024-03-01 | Buy |
| Biosynth Carbosynth | FD44459 | Direct Black 19 | 6428-31-5 | 1kg | $250 | 2021-12-16 | Buy |
| American Custom Chemicals Corporation | DYE0002793 | DIRECT BLACK 19 95.00% | 6428-31-5 | 5MG | $503.84 | 2021-12-16 | Buy |
| Biosynth Carbosynth | FD44459 | Direct Black 19 | 6428-31-5 | 50g | $40 | 2021-12-16 | Buy |
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.
Flammability and Explosibility
Non flammable
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
1of2
Preparation Products
Global( 156)Suppliers
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| TIANJIN XIANGRUI DYESTUFF CO.,LTD | +undefined13902081959 | jinyanchun@xiangruidye.com | China | 83 | 58 |
| Winchem industrial co limited | +8613003762012 | info@win-chemical.com | China | 300 | 58 |
| CONIER CHEM AND PHARMA LIMITED | +8618523575427 | sales@conier.com | China | 49977 | 58 |
| career henan chemical co | +86-0371-86658258 +8613203830695 | factory@coreychem.com | China | 29794 | 58 |
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418671 +8618949823763 | sales@tnjchem.com | China | 34563 | 58 |
| Dideu Industries Group Limited | +86-29-89586680 +86-15129568250 | 1026@dideu.com | China | 18895 | 58 |
| AFINE CHEMICALS LIMITED | +86-0571-85134551 | sales@afinechem.com | China | 15079 | 58 |
| Dayang Chem (Hangzhou) Co.,Ltd. | +86-0571-88938639 +8617705817739 | info@dycnchem.com | China | 52705 | 58 |
| Alfa Chemistry | +1-5166625404; | Info@alfa-chemistry.com | United States | 20405 | 58 |
| GIHI CHEMICALS CO.,LIMITED | +86-571-86217390; +8618058761490 | info@gihichemicals.com | China | 49968 | 58 |
View Lastest Price from Direct Black 19 manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2025-12-03 | Direct Black 19
6428-31-5
|
US $0.00 / kg | 25kg | 1 | 5mt | Winchem industrial co limited | |
 |
2022-10-26 | Direct Black 19, DIrect Fast Black G
6428-31-5
|
US $2.00 / kg | 25kg | 99% | 20 tons | TIANJIN XIANGRUI DYESTUFF CO.,LTD | |
 |
2019-12-24 | Direct Black 19
6428-31-5
|
US $1.00 / KG | 1KG | 98%HPLC | 10t | Career Henan Chemical Co |
-
- Direct Black 19
6428-31-5
- US $0.00 / kg
- 1
- Winchem industrial co limited
-
- Direct Black 19, DIrect Fast Black G
6428-31-5
- US $2.00 / kg
- 99%
- TIANJIN XIANGRUI DYESTUFF CO.,LTD
-
- Direct Black 19
6428-31-5
- US $1.00 / KG
- 98%HPLC
- Career Henan Chemical Co
6428-31-5(Direct Black 19)Related Search:
Direct black RN
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
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 19 LIQUID
Direct Black 19 ISO 9001：2015 REACH
Direct Fast Black G (C.I. Direct Black 19)
C.I.Direct Black 19:C.I.35255
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
C34H27N13Na2S2O7
C34H27Na2O7S2
C34H27N13Na2O7S2
C34H27N13O7S22Na
Organics
Dyes and Pigments
