Name:C.I.Acid Red 18,C.I.16255 Molecular Structure: Single azo class C.I.Acid Red 18,C.I.16255,CAS 2611-82-7,604.48,C20H11N2Na3O10S3,Acid Scarlet 121,Acid Scarlet 2R,Acid Scarlet 3R,Acid Scarlet BR,Acid Scarlet R,Acid Brilliant Red 4R Molecular Formula:C20H11N2Na3O10S3 Molecular Weight: 604.48 CAS Registry Number:2611-82-7 1.Properties and Applications: red. Red powder. Soluble in water red, slightly soluble in ethanol and soluble fiber element, insoluble in other organic solvents. Strong sulfuric acid in purple, will the red orange is diluted; Nitric acid solution in yellow. Its water solution and strong hydrochloric acid red, add sodium hydroxide is brown. Mainly used for wool, silk, polyamide fiber and its blended fabric dyeing, also can be used for leather, paper, plastic, wood, medicine and cosmetics of dyeing, still can make the ink. Standard Light Fastness Soaping Persperation Fastness Oxygen bleaching Fastness to seawater Fading Stain Fading Stain Fading Stain ISO 4 2 3-4 2 1-2 3 AATCC 4 2 2 1 1 4 2.International Similar Brand Acid Scarlet 121 Acid Scarlet 2R Acid Scarlet 3R Acid Scarlet BR Acid Scarlet R Acid Brilliant Red 4R Acid Brilliant Red 3R Acid Brilliant Scarlet 3R Acid Ponceau 4R Acid Red 27 200% Acid Red No 3 Acid Scarlet 3R