Product Name: Direct Black 38
C.I. No.: 30235
CAS No.: 1937-33-7
Molecular Formula: C34H27N13Na2O7S2
Molecular Weight: 839.77
Relative Name:
Direct black BN,direct black BX
Direct Direct Black 38 Physical Properties and light fastness, solubility.
| Direct Direct Black 38 |
| Dyeing depth % |
2 |
| Insolubles % |
0.15 |
| Light Fastness |
3 |
| Washing Fatness |
2 |
| Rubbing fastness(dry) |
4 |
| Rubbing fastness(wet) |
3 |
Direct Direct Black 38Properties:
green and black. Black powder. Soluble in water for green light black, solubility of 100 g/L (80 ºC), 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.
Applications:
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.
Note: The data contained here are based on our current knowledge and experience. It is the responsibility of user to test our products before the final application.
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