Product Name: Acid Red   337
CAS No.:
Molecular Formula:   C17H11F3N3NaO4S
Molecular Weight:   604.48  
Relative Name:
Acid Scarlet 121;Acid Scarlet 2R;Acid Scarlet 3R;Acid Scarlet BR;Acid Scarlet R;Acid Brilliant Red 4R;Apollo Acid Brilliant Scarlet 3R;Brilliant Scarlet 3R;Daiwa New Coccine;Dycroacid Scarlet 3R;Orcoacid Brilliant Scarlet 3R-L;Rifa Acid Brilliant Scarlet R;Vicoacid Scarlet 3R;Triacid Ponceau 4R .
Shade: Red.

Acid  Red  337  Dyeing Fastness(grade)

Acid  Red  337  Properties and Applications:
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; Ni-tric acid solution in  yellow . Its water solution and strong hy-drochloric acid red, add sodi-um hydro-xide is  brown . 
Application :
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.