157577-99-6 Usage
Preparation
4-Amino-N-(4-aminophenyl)benzenesulfonamide double nitriding,sulfonylurea aniline in acid conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acidcoupling, aniline diazo, and the above the products in alkaline conditions coupling, and then Benzene-1,3-diamine coupled.
Flammability and Explosibility
Nonflammable
Properties and Applications
black. Mainly used for wool, silk, cotton and glue dyeing, also can be used for leather dyeing.
Check Digit Verification of cas no
The CAS Registry Mumber 157577-99-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,5,7 and 7 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 157577-99:
(8*1)+(7*5)+(6*7)+(5*5)+(4*7)+(3*7)+(2*9)+(1*9)=186
186 % 10 = 6
So 157577-99-6 is a valid CAS Registry Number.
