6420-46-8 Usage
Uses
Used in Textile Industry:
Disodium 7,7'-(carbonyldiimino)bis[3-[(3-aminophenyl)azo]-4-hydroxynaphthalene-2-sulphonate] is used as a dye for the textile industry. Its red color and solubility in water make it suitable for coloring fabrics. disodium 7,7'-(carbonyldiimino)bis[3-[(3-aminophenyl)azo]-4-hydroxynaphthalene-2-sulphonate]'s resistance to acids and alkalis, as well as its light fastness, ensure that the color remains vibrant and resistant to fading under various conditions.
Used in Leather Industry:
In the leather industry, disodium 7,7'-(carbonyldiimino)bis[3-[(3-aminophenyl)azo]-4-hydroxynaphthalene-2-sulphonate] is used as a dye for coloring leather products. Its strong resistance to acids and alkalis, as well as its light fastness, contribute to the durability and long-lasting color of the leather items.
Used in Paper Industry:
Disodium 7,7'-(carbonyldiimino)bis[3-[(3-aminophenyl)azo]-4-hydroxynaphthalene-2-sulphonate] is also used as a dye in the paper industry. Its ability to produce a vibrant red color, along with its resistance to acids and alkalis, makes it an ideal choice for coloring various types of paper products.
Used in Cosmetics Industry:
In the cosmetics industry, disodium 7,7'-(carbonyldiimino)bis[3-[(3-aminophenyl)azo]-4-hydroxynaphthalene-2-sulphonate] is used as a colorant for various cosmetic products. Its solubility in water and alcohol, as well as its resistance to acids and alkalis, make it suitable for use in formulations that require a stable and long-lasting red color.
Used in Plastics and Polymers Industry:
Disodium 7,7'-(carbonyldiimino)bis[3-[(3-aminophenyl)azo]-4-hydroxynaphthalene-2-sulphonate] is used as a colorant in the plastics and polymers industry. Its strong resistance to acids and alkalis, as well as its light fastness, make it an ideal choice for coloring plastic and polymer products that require a stable and long-lasting red color.
Preparation
N-(3-aminophenyl)formamide (2 Moore) diazo, and N,N’-bis(4-hydroxy-2-sulfonaphthalene-7-yl)urea coupling, and then hydrolysis formex amino.
Standard
Acid Resistance
Fading
Stain
ISO
3-4
AATCC
5
Check Digit Verification of cas no
The CAS Registry Mumber 6420-46-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,4,2 and 0 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 6420-46:
(6*6)+(5*4)+(4*2)+(3*0)+(2*4)+(1*6)=78
78 % 10 = 8
So 6420-46-8 is a valid CAS Registry Number.
