71603-79-7 Usage
Description
Acid Yellow 220 is a synthetic dye that is characterized by its dark yellow color and is available in the form of a deep yellow powder. It is primarily used in the dyeing and printing of textiles, particularly for wool, silk, and polyamide fibers.
Uses
Used in Textile Industry:
Acid Yellow 220 is used as a dye for [application reason] to impart a deep yellow color to wool, silk, and polyamide fibers. It is known for its good light fastness, soaping fastness, and perspiration fastness, making it suitable for various textile applications.
Standard (Polyamide):
Acid Yellow 220 is used as a dye for polyamide fibers, providing good light fastness (ISO 7-8), soaping fastness (4-5), perspiration fastness (4-5), and oxygen bleaching fastness (5). It also demonstrates fastness to seawater (4-5) and resistance to fading and staining.
Preparation
2-(3-Amino-4-hydroxyphenylsulfonamido)benzoic acid diazo, and N-(2-chlorophenyl)-3-oxobutanamide coupling, and then into 1:2 cobalt complex.
Standard(Polyamide)
Light Fastness
Fading
Stain
ISO
7-8
Check Digit Verification of cas no
The CAS Registry Mumber 71603-79-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,6,0 and 3 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 71603-79:
(7*7)+(6*1)+(5*6)+(4*0)+(3*3)+(2*7)+(1*9)=117
117 % 10 = 7
So 71603-79-7 is a valid CAS Registry Number.
