Direct Dyes Black 173 for Paper Dyeing

Product Description

Product Name: Direct Black 173
C.I. No.: 31560/31565
CAS No.: 8003-62-1
Molecular Formula: C32H23N9Na2O7S2
Molecular Weight: 755.69
Shade: Black.

Relative Name:
Direct Black D-HR;

Direct Direct Black 173 Physical Properties and light fastness, solubility.

Direct Black 173
Dyeing depth %	2
Insolubles %	0.15
Light Fastness	3
Washing Fatness	1-2
Rubbing fastness(dry)	4
Rubbing fastness(wet)	3

Direct Direct Black 173 Properties:black. Black uniform powder. Soluble in water for red light black, soluble in soluble fiber element, slightly soluble in alcohol, insoluble in other organic solvents. In the dark for the strong sulfuric acid to navy, diluted dark red light for blue or black; In nitric acid solution for red; In strong hydrochloric acid slightly soluble in, red to grey. The dye solution to join strong micro red sodium hydroxide solution.

Application:
Mainly used for cotton, hemp, such as glue of cellulose fiber dyeing, also suitable for silk, polyamide fiber dyeing. Especially suitable for wool/stick blended fabric dyeing a bath.

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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