Direct Green 58
Name:C.I.Direct Green 58,C.I.30225
Molecular Structure: trisazo class
C.I.Direct Green 58,C.I.30225,CAS 110735-26-7,782.72,C34H24N8Na2O8S2,Diazamine Leather Green B
Molecular Formula:C34H24N8Na2O8S2
Molecular Weight: 782.72
CAS Registry Number:110735-26-7
Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, first in alkaline conditions and 4-Nitrobenzenamine diazo, in acid conditions and 4-Amino-5-hydroxynaphthalene-1,7-disulfonic acid and product of the three matches, and then coupled with phenol, finally the method with the nitro reduction.
Properties and Applications: dark green. Moderate soluble in water for blue light green, slightly soluble in alcohol. The strong sulfuric acid for violet black, diluted with light dark purple. The dye solution to join strong hydrochloric acid have dark blue light grey precipitation; Add thick sodium hydroxide solution for dark green light gray
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 3 | 4 | 3 | 3 | 3-4 | ||
| AATCC | 5 | 5 | 3-4 | 2-3 | 1-2 | ||
List of Suppliers:
Diazamine Leather Green B( Francolor Pigments SA )