Direct Green 55
Name:C.I.Direct Green 55,C.I.25315
Molecular Structure: Double azo class
C.I.Direct Green 55,C.I.25315,990.8,C33H22N8Na4O15S4,Para Light Green B
Molecular Formula:C33H22N8Na4O15S4
Molecular Weight: 990.8
CAS Registry Number:
Manufacturing Methods : 4-Nitrobenzenamine diazo, in acid conditions and 4-Amino-5-hydroxynaphthalene-1,7-disulfonic acid matches, will the nitro reduction, and then will get the amino nitrogen compounds for light accidentally gasification.
Properties and Applications: dark green light blue. Soluble in water for dark blue light red, hardly soluble in alcohol. The strong sulfuric acid for hidden cyan, diluted green light for blue. The dye solution to join strong hydrochloric acid for hidden cyan, have precipitation; Add thick sodium hydroxide solution for red light purple.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| AATCC | 3 | 5 | 4 | 2-3 | 3-4 | ||
List of Suppliers:
Para Light Green B( Bayer Group )