6426-65-9 Usage
Preparation
4-(4-Aminophenyl)benzenamine double nitriding, first with 4-Hydroxynaphthalene-2,7-disulfonic acid coupling, again in alkaline conditions and 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid coupling.
Properties and Applications
Dark blue purple. Soluble in water for purplish red, slightly soluble in ethanol for pink. The strong sulfuric acid in blue, diluted for dark purple. The dye solution to join strong hydrochloric acid for Red sauce, precipitation; Add thick sodium hydroxide solution for red light brown.
Standard
Acid Resistance
Alkali Resistance
Light Fastness
Soaping
Water
Fading
Stain
Fading
Stain
ISO
4
4-5
2
2
2
Standard
Acid Resistance
Fading
Stain
ISO
4
Check Digit Verification of cas no
The CAS Registry Mumber 6426-65-9 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 6 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 6426-65:
(6*6)+(5*4)+(4*2)+(3*6)+(2*6)+(1*5)=99
99 % 10 = 9
So 6426-65-9 is a valid CAS Registry Number.