Product Name: Direct Blue 78
C.I. No.: 34200
CAS No.: 2503-73-3
Molecular Formula: C42H25N7Na4O13S4
Molecular Weight: 1055.91
Shade: Blue
Relative name:Direct Fast Blue 4GL;Direct Fast Blue G;Direct Sky Blue;Sirius Blue GN;Solophenyl Blue 4GL;
Direct Blue 78 Physical Properties and light fastness, solubility.
Direct blue 78 |
|
Light Fastness |
4-5 |
Persperation Fastness(fading) |
-- |
Persperation Fastness(stain) |
-- |
Soaping(fading) |
2-3 |
Soaping(stain) |
-- |
Soluble in water for blue, solubility of 15 g/L (60 ℃), 30 g/L (97 ℃), soluble in soluble fiber element, slightly soluble in alcohol, insoluble in other organic solvents. The strong sulfuric acid in Red sauce for galleries to, diluted Red sauce for; In the light of nitric acid for palm gray. The dye solution to join strong hydrochloric acid for red light blue; Add thick sodium hydroxide solution for red light purple. Water-soluble good, colored light to blue. Dye in bath of copper, iron ion colored light basic unchanged. SDC classification for class B. Neutral white is very good, alkaline white.
Mainly used for cotton or viscose dyeing and printing directly, and disperse dyestuffs with bath dyeing polyester/cotton blended fabric. Can also be used for paper, leather and biological dyeing.
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.
