Direct Brown 223
Name:C.I.Direct Brown 223
Molecular Structure: Double azo class
C.I.Direct Brown 223,CAS 76930-14-8,670.56,C30H20N6Na2O8S,Direct Brown MA
Molecular Formula:C30H20N6Na2O8S
Molecular Weight: 670.56
CAS Registry Number:76930-14-8
Manufacturing Methods : 4-Amino-N-(4-aminophenyl)benzamide double nitriding,first coupled with 2-Hydroxybenzoic acid
, and then in alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling.
Properties and Applications: brown
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 3 | 5 | 4-5 | 3-4 | 2 | 4 | 3 |
List of Suppliers:
Direct Brown MA ( Mitsubishi Chemical Industries )