3258-74-0 Usage
Preparation
3,5-Diamino-4-hydroxybenzenesulfonic acid double nitrogen, add Sodium hydroxide make show weak alkaline, in order to make molecules of chlorine is hydroxyl replaced, then first and 6-Hydroxynaphthalene-2-sulfonic acid coupling, again with Naphthalen-2-ol coupling.
Properties and Applications
blue black. Soluble in water for purple to Copenhagen blue, slightly soluble in ethanol for dark purple, not soluble in Acetone. In concentrated sulfuric acid to deep purple, dilution after brown light orange. Dye aqueous solution to join concentrated hydrochloric acid to brown light orange, Join concentrated sodium hydroxide solution for purple.
Standard
Ironing Fastness
Light Fastness
Fulling
Persperation Fastness
Soaping
Water
Alkali
Acid
ISO
5
7
5
4-5
4
5
5
Standard
Ironing Fastness
Alkali
Acid
ISO
5
Check Digit Verification of cas no
The CAS Registry Mumber 3258-74-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,2,5 and 8 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 3258-74:
(6*3)+(5*2)+(4*5)+(3*8)+(2*7)+(1*4)=90
90 % 10 = 0
So 3258-74-0 is a valid CAS Registry Number.
InChI:InChI=1/C26H18N4O9S2.2Na/c31-22-9-5-14-3-1-2-4-18(14)24(22)29-27-20-12-17(41(37,38)39)13-21(26(20)33)28-30-25-19-8-7-16(40(34,35)36)11-15(19)6-10-23(25)32;;/h1-13,27-28,33H,(H,34,35,36)(H,37,38,39);;/q;2*+1/p-2/b29-24-,30-25-;;
