Ponceau 4R
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.
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, and still can make the ink.
C.I. Name: Acid Red 18
C.I. Number: 16255
CAS Number: 2611-82-7
Molecular Weight: 562.51
Molecular Formula: C20 H15 N2 NaO10 S3
Chemical Structure:
Packing: 25KGs pp Drum
