6408-90-8 Usage
Preparation
2-(4-Aminophenylamino)-5-nitrobenzenesulfonic acid diazotization, coupling with o-Cresol, and then use Benzenesulfonyl chloride?phenol hydroxyl esterified.
Properties and Applications
light yellow dark red. Dark red light yellow powder. Soluble in water for yellow, soluble in ethanol, slightly soluble in acetone and toluene. The strong sulfuric acid dyes for purple. Discharge sex medium, in light of copper (micro have change, iron ion in the dark colored. Mainly used for wool, silk, polyamide fiber and wool blended fabric dyeing, printing, silk directly to discharge printing color. Can also be used for leather and soap color.
Standard
Light Fastness
Soaping
Persperation Fastness
Oxygen bleaching
Fastness to seawater
Fading
Stain
Fading
Stain
Fading
Stain
ISO
4-5
3
2
5
4
3
3
5
Standard
Light Fastness
Fading
Stain
ISO
4-5
Check Digit Verification of cas no
The CAS Registry Mumber 6408-90-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,4,0 and 8 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 6408-90:
(6*6)+(5*4)+(4*0)+(3*8)+(2*9)+(1*0)=98
98 % 10 = 8
So 6408-90-8 is a valid CAS Registry Number.
InChI:InChI=1/C25H20N4O8S2.Na/c1-17-15-20(11-14-24(17)37-39(35,36)22-5-3-2-4-6-22)28-27-19-9-7-18(8-10-19)26-23-13-12-21(29(30)31)16-25(23)38(32,33)34;/h2-16,26H,1H3,(H,32,33,34);/q;+1/p-1/b28-27+;