6406-66-2 Usage
Description
Acid Red 142 is a red azoic dye with the chemical formula C20H12N4Na2O7S2. It is soluble in water, ethanol, and strong sulfuric acid, and exhibits different colors in various conditions. In water, it appears red, while in ethanol, it shows an orange-red hue. In strong sulfuric acid, it turns dark blue and becomes red upon dilution. When added to a water solution with strong hydrochloric acid, it changes from brown-orange to palm red, and upon the addition of a thick sodium hydroxide solution, it turns purplish-red.
Uses
Used in Textile Industry:
Acid Red 142 is used as a dye for coloring textiles, providing a vibrant red color to fabrics. Its light fastness, soaping, perspiration fastness, and oxygen bleaching properties make it suitable for various textile applications.
Used in Leather Industry:
Acid Red 142 is used as a dye for coloring leather products, imparting a rich red hue to leather items. Its fastness to seawater and fading properties ensure the color remains vibrant even in harsh conditions.
Used in Paper Industry:
Acid Red 142 is used as a dye for coloring paper products, offering a consistent red color to paper materials. Its stain and fading properties contribute to the durability and appearance of the paper products.
Preparation
4-((4-Aminophenyl)diazenyl)benzenesulfonic acid diazo, and 6-Hydroxynaphthalene-2-sulfonic acid coupling.
Standard
Light Fastness
Fading
Stain
ISO
4
Check Digit Verification of cas no
The CAS Registry Mumber 6406-66-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,4,0 and 6 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 6406-66:
(6*6)+(5*4)+(4*0)+(3*6)+(2*6)+(1*6)=92
92 % 10 = 2
So 6406-66-2 is a valid CAS Registry Number.
InChI:InChI=1/C22H16N4O7S2/c27-21-12-1-14-13-19(35(31,32)33)10-11-20(14)22(21)26-25-16-4-2-15(3-5-16)23-24-17-6-8-18(9-7-17)34(28,29)30/h1-13,25H,(H,28,29,30)(H,31,32,33)/b24-23+,26-22-
