Direct Yellow G Name:C.I.Direct?Yellow?12,C.I.24895 Molecular Structure:?Double azo class C.I.Direct Yellow 12,C.I.24895,CAS 2870-32-8,680.66,C30H26N4Na2O8S2,Chrysophenine G ,Chrysophenine GX,Direct Brilliant Yellow 4R Molecular Formula:C30H26N4Na2O8S2 Molecular Weight:?680.66 CAS Registry Number:2870-32-8 ? Properties and Applications:?red?light yellow. Deep yellow evenly powder. 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 ℃), 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 ℃ in aqueous solution which is glue frozen form, the name frozen yellow. Cellulose fiber of dyeing, the dye absorption rate as well, in 40 ℃ 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. Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water Fading Stain Fading Stain ISO 3 4-5 4 1 1 AATCC 2 2-3 4-5 1 1 List of Suppliers: ABCOL Direct Yellow 4RA ACDI Chrysophenine G 333% ACDI Direct Chrysophenine G H/C UIS 333% Arid Chrysophenine G 33% Atul Direct Fast Yellow GCH Bitamine Direct Chrysophenine G Calcomiiie Brill Yellow C Conc Chrysophenine