CAS# 845-10-3

General Description: Water soluble dye from the Monoazo family of colorants.  This dye is commonly used as a pH indicator and as a colorant in assorted acidic cleaning products. 

Type: Acid

Color: Red

Number: 2

CAS#: 845-10-3

Color Index #13020

Appearance: Light brown powder

Shade (in solution):   Red in pH < 4.4;

                                     Orangey in pH > 4.5 and < 6.1;

                                     Yellowish in pH > 6.2

Solubility: Soluble in water

Usage Rate: Commonly used at 0.0001 – 0.01% by weight