200% Direct Black 38, Direct Black Bn for Textile Leather Dyeing

• Customization: Available
• CAS No.: 1937-33-7
• Formula: C34h27n13na2o7s2
• Model NO.: Direct Black 38
• Colour: Black
• Appearance: Powder
• Usage: Paper, Textile, Viscose, Silk, Wool, Cotton, etc.
• Name: Direct Black 38
• Content: 100%
• C.I.No.: Direct Black 38
• Transport Package: 25kg/Drum, Carton Box, Bag
• Trademark: Emperor
• Origin: China
• HS Code: 3204140000
• Production Capacity: 1000 Tons/Year

Product Description

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.