Product Description
DIRECT SUN YELLOW RCH
Direct Yellow 99 is a reddish-yellow, water-soluble azo dye used for coloring textiles, leather, and paper. Its key details include a reddish-yellow color, applications in dyeing wool, silk, and polyamide fibers, and its use in leather and paper. It is available in yellow powder form and has good fastness properties, such as good lightfastness and resistance to washing and perspiration.
Chemical and physical properties
Color: Reddish yellow
Chemical Class: Azo dye
Physical Form: Yellow powder
Molecular Formula: 161348
CAS Number: 10343-58-5
Molecular Weight:
444.35 g/mol (for the sodium salt form)
Solubility: Soluble in water and strong sulfuric acid (in which it turns brown)
Applications:
Textiles: Dyeing and printing of cotton, acrylic, nylon, wool, and silk fibers
Leather: Used for dyeing leather
Paper: Used for coloring paper
Other: Used in the preparation of solvent dyes and for wool carpet dyeing
Performance and fastness: Light Fastness: 4
Washing Fastness: 2
Perspiration Fastness: 2