Vat Blue 8
Name:C.I.Vat Blue 8,C.I.73800
Molecular Structure: Indigo class
C.I.Vat Blue 8,C.I.73800,CAS 6424-71-1,386.23,C20H13Cl2NO3,Indanthren Printing Blue 2G
Molecular Formula:C20H13Cl2NO3
Molecular Weight: 386.23
CAS Registry Number:6424-71-1
Manufacturing Methods : 5-chloro-7-methoxy-4-methyl phenol indolenine and 4-Chloronaphthalene-1,2-dione condensation, or 4-Methyl-5-chloro-7-methoxy-3-indolinone and 4-Chloro-1-naphthol condensation (BIOS 983).
Properties and Applications: blue to navy blue. In concentrated sulfuric acid to blue light green; In concentrated nitric acid for blue green to brown light yellow, In the basic insurance powder solution for yellow; In the acidic insurance powder solution for pale yellow.
| Standard | Ironing Fastness | Chlorine bleach | Light Fastness | Mercerized | Oxygen bleach | Soaping | |
| Fading | Stain | ||||||
| ISO | 4-5 | 4 | 5-6 | 4 | 4 | ||
List of Suppliers:
Indanthren Printing Blue 2G( IG Farbenindustrie AG )