Direct Black 19
- CAS NO.:6428-31-5
- Empirical Formula: C34H30N13NaO7S2
- Molecular Weight: 819.81
- MDL number: MFCD00137529
- EINECS: 229-208-1
- SAFETY DATA SHEET (SDS)
- Update Date: 2023-05-04 15:16:48
What is Direct Black 19?
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 |
Properties of Direct Black 19
Boiling point: | 1379℃[at 101 325 Pa] |
Density | 1.49[at 20℃] |
vapor pressure | 0Pa at 25℃ |
Water Solubility | 22.67g/L 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 information for Direct Black 19
Computed Descriptors for Direct Black 19
Abamectin manufacturer
MaheshRaj Chemicals Pvt Ltd
Appex Dye Stuff Industries
Neema Chemicals
Shidimo Interaux Private Limited
Colorants Chem Pvt Ltd
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