CAS# 3520-42-1

General Description: Water soluble dye in the Xanthene chemical family.  This dye is commonly used for the coloration of industrial cleaning products, silk, wool, leather, inks, non-destructive testing, leak tracing, and semi-permanent hair coloring. 

Type: Acid

Color: Red

Number: 52

CAS#: 3520-42-1

Color Index #45100

Appearance: Brown powder

Shade (in solution): Fluorescent pinkish-red

Solubility: Soluble in water

Lightfastness: 1-3 [AATCC; 8 is highest]

Usage Rate: Commonly used at 0.001 – 0.5% by weight

pH Stability: Expected to be most stable in pH 1-13