ACID BLUE 9

CAS# 3844-45-9

General Description: Industrial grade water soluble dye from the Triarylmethane family of colorants.  This dye is commonly used for the coloration of cleaning products, soaps, detergents, cellulosic materials, paper, wood, silk, nylon fibers, wool, leather, biological stains, semi-permanent hair dyes, and color depositing shampoo and conditioner.

Type: Acid

Color: Blue

Number: 9

CAS#: 3844-45-9

Color Index #: 42090

Appearance: Dark blue powder

Shade (in solution): Blue

Solubility: Soluble in water

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

Usage Rate: Most commonly used at 0.0001 – 1.0% by weight

pH Stability: Most stable in pH 3-12.  In pH < 3 the dye tends to turn green.  In pH > 12 the dye tends to turn pink.