3818-60-8 Usage
Uses
Used in Textile Industry:
Disodium 3-[[4'-[[6-amino-1-hydroxy-3-sulphonato-2-naphthyl]azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-4-hydroxynaphthalene-1-sulphonate is used as a dye for cellulose fiber glue, such as cotton and hemp. It is also suitable for dyeing silk, polyamide fiber, and stick/jin blended fabrics.
Standard:
The standard for this dye includes the following properties:
Acid Resistance: 4 (ISO)
Alkali Resistance: 3-4 (ISO)
Light Fastness: 2 (ISO)
Soaping Fading: 2 (ISO)
Water Fading: 2 (ISO)
Stain Fading: 2 (ISO)
Preparation
3,3′-Dimethoxylbenzidine double nitriding, first with 4-Hydroxynaphthalene-1-sulfonic acid?conditions and 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid coupling.
Standard
Acid Resistance
Fading
Stain
ISO
4
Check Digit Verification of cas no
The CAS Registry Mumber 3818-60-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,8,1 and 8 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 3818-60:
(6*3)+(5*8)+(4*1)+(3*8)+(2*6)+(1*0)=98
98 % 10 = 8
So 3818-60-8 is a valid CAS Registry Number.
InChI:InChI=1/C34H27N5O10S2.2Na/c1-48-28-14-18(7-11-25(28)36-38-27-17-30(50(42,43)44)23-5-3-4-6-24(23)33(27)40)19-8-12-26(29(15-19)49-2)37-39-32-31(51(45,46)47)16-20-13-21(35)9-10-22(20)34(32)41;;/h3-17,40-41H,35H2,1-2H3,(H,42,43,44)(H,45,46,47);;/q;2*+1/p-2