Mordant Brown 18
Name:C.I.Mordant Brown 18,C.I.20150
Molecular Structure: Double azo class
C.I.Mordant Brown 18,C.I.20150,CAS 5850-12-4,515.37,515.37,C19H11N5Na2O8S,Alizarol Brown G,chrome Brown G
Molecular Formula:C19H11N5Na2O8S
Molecular Weight: 515.37
CAS Registry Number:5850-12-4
Manufacturing Methods : 4-Aminobenzenesulfonic acid and where did 4-Nitrobenzenamine respectively diazotization, in turn, and 2-Hydroxybenzoic acid coupling.
Properties and Applications: yellow brown. Soluble in water for yellow brown, solubility is 50 g/l (80 ℃), soluble in ethanol and Cellosolve, slightly soluble in Acetone. In concentrated sulfuric acid to red light brown, dilution after brown light yellow, In concentrated nitric acid for orange solution, to yellow, In concentrated hydrochloric acid for orange solution; In 10% sodium hydroxide solution for yellow brown solution. Its aqueous solution to join hydrochloric acid with brown precipitation. In dye bath of copper, iron ion sensitive. Used for wool fabric dyeing and printing, also can be used for silk, nylon and biological coloring and leather dyeing.
| Standard | Ironing Fastness | Light Fastness | Fulling | Persperation Fastness | Soaping | Water | |
| Alkali | Acid | ||||||
| ISO | 4 | 4-5 | 3-4 | 4 | 4 | 5 | |
| AATCC | 5 | 4 | 4 | 4-5 | 4 | 5 | |
List of Suppliers:
Alizarol Brown (Classic Dyestuffs Inc)
Alizarol Brown G (Classic Dyestuffs Inc)
Bemachrome Brown G( Berncolors-Poughkeepsie Inc )