Direct Dyes Yellow 12 for Paper Dyeing

Product Name: Direct Yellow 12
C.I. No.: 24895
CAS No.: 2870-32-8
Molecular Formula: C30H26N4Na2O8S2
Molecular Weight: 680.66
Relative Name:
Direct Yellow G; Direct Yellow GX, Direct Yellow 4R;Chrysophenine G;Chrysophenin G;Pyrazol Yellow;Chrysophenin NS;Benzol Yellow LG.
Shade: red light yellow. Deep yellow evenly powder.
 
Direct Yellow 12 Physical Properties and light fastness, solubility. 
Direct yellow 12 Properties and Applications:
Soluble in water solution for yellow until golden brown, temperature drop the floe dyes have separation, the solubility in water for 30 g/L (80 ºC), and adequate soluble in ethanol (for lemon yellow) and soluble fiber element, slightly soluble in acetone for green light yellow. The strong sulfuric acid to red light purple, diluted to red light blue for purple, precipitation. The dye solution to join strong hydrochloric acid for deep red sauce, precipitation; Add thick sodium hydroxide solution for gold orange, precipitation; Add in 1 0% sodium hydroxide solution a slight change color. 2% of the dye below 15 ºC in aqueous solution which is glue frozen form, the name frozen yellow. Cellulose fiber of dyeing, the dye absorption rate as well, in 40 ºC maximum when affinity, discharge performance is very good.
Used for dyeing cotton and viscose, to dead cotton has certain covering power, can also be used for cotton or viscose fabric printing, also can be used for silk, wool, PVA, polyamide fiber and its blended fabric dyeing. Can also be used for leather, paper, biological shading, its heavy metal salt can be used for pigment.
 
Package, 25KG/DRUM, CARTON BOX, BAG
 
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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