6408-91-9 Usage
Preparation
4-Aminobenzenesulfonic acid diazotization, and 2-Hydroxy-3-methylbenzoic acid coupling.
Properties and Applications
dark yellow. Soluble in water for yellow. In concentrated sulfuric acid to golden yellow, yellow precipitation after dilution. Dye aqueous solution to join concentrated hydrochloric acid for orange; Join concentrated Sodium hydroxide solution for orange; Add 10% Sodium hydroxide solution no change.
Standard
Ironing Fastness
Light Fastness
Fulling
Persperation Fastness
Soaping
Water
Alkali
Acid
ISO
5
4
5
2
5
5
5
Standard
Ironing Fastness
Alkali
Acid
ISO
5
Check Digit Verification of cas no
The CAS Registry Mumber 6408-91-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,4,0 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 6408-91:
(6*6)+(5*4)+(4*0)+(3*8)+(2*9)+(1*1)=99
99 % 10 = 9
So 6408-91-9 is a valid CAS Registry Number.
InChI:InChI=1/C14H12N2O6S.2Na/c1-8-6-10(7-12(13(8)17)14(18)19)16-15-9-2-4-11(5-3-9)23(20,21)22;;/h2-7,15H,1H3,(H,18,19)(H,20,21,22);;/q;2*+1/p-2/b16-10+;;