Molecular Structure:

Product description: Direct Yellow R Name:C.I.Direct Yellow 11,C.I.40000 Molecular Structure: azo,Stilbene Class C.I.Direct Yellow 11,C.I.40000,CAS 1325-37-7,Direct Yellow 2G,Direct Yellow R,Pergasol Yellow 5R,Pergasol Yellow S CAS Registry Number:1325-37-7 1.Properties and Applications:  red light yellow. Soluble in water for red light yellow, slightly soluble in soluble fiber element, insoluble in other organic solvents. The strong sulfuric acid is a deep in the red, diluted into dark yellow, and with brown precipitation; In nitric acid partly dissolved for yellow brown, to olive; Partly dissolved in strong hydrochloric acid with black. The dye solution to join strong hydrochloric acid into olive yellow; Add thick sodium hydroxide solution with gold orange precipitation. Dye met in the bath of copper (colored light turned green, iron ion a dark colored, meet zinc, ammonium become yellow light orange. There is the strong photosensitive brittle loss function. Used for cotton or viscose dyeing, general is not used for printing, also can be used for leather, paper color. Most used for cotton knitted content and blankets, few dyeing cotton cloth, also suitable for viscose silk and silk blended interwoven fabric dyeing.   Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water Fading Stain Fading Stain ISO 4-5 1-2 2 3-4 3-4 AATCC 4 1 1-2 3 3-4 2.International similar brand  Direct Yellow 2G, Direct Yellow R ACDI Stilbene Yellow T Aizen Direct Paper Yellow RH Apollo Direct Yellow TG Arid Fast Yellow 5RA 150% Carta Yellow G Carta Yellow GP Condirec Yellow AA Direct Fast Yellow A Direct Paper Yellow R Direct Paper Yellow T Direct Yellow