71819-57-3 Usage
Preparation
3-Aminobenzenesulfonic acid diazo, and (2-Methoxyphenylamino)methanesulfonic acid?coupling, remove a sulfonic acid hydrolysis base, its product to diazo, coupled with phenol, then the etherification.
Properties and Applications
red light yellow. Orange powder, soluble in water. Mainly used for wool, polyamide fiber dyeing and printing.
Standard
Light Fastness
Soaping
Persperation Fastness
Oxygen bleaching
Fastness to seawater
Fading
Stain
Fading
Stain
Fading
Stain
ISO
6
3-4
4
2-3
Standard
Light Fastness
Fading
Stain
ISO
6
Check Digit Verification of cas no
The CAS Registry Mumber 71819-57-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,8,1 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 71819-57:
(7*7)+(6*1)+(5*8)+(4*1)+(3*9)+(2*5)+(1*7)=143
143 % 10 = 3
So 71819-57-3 is a valid CAS Registry Number.