Acid Red 70
Name:C.I.Acid Red 70,C.I.27155
Molecular Structure: Double azo class
Molecular Formula:C22H14N4Na2O7S2
Molecular Weight: 556.48
CAS Registry Number:6226-74-0
Manufacturing Methods : 4-((4-Aminophenyl)diazenyl)benzenesulfonic acid diazo, and 7-Hydroxynaphthalene-1-sulfonic acid coupling.
Properties and Applications: colourful yellow red. Soluble in water and ethanol to the red orange. The strong sulfuric acid in blue, diluted into pink. In water solution to join strong hydrochloric acid is palm orange; Add thick sodium hydroxide solution for dark purple.
Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
Fading | Stain | Fading | Stain | Fading | Stain | |||
ISO | 4 | 2-3 | 1-2 | 2 | 2 | 1-2 |
List of Suppliers:
Atul Brilliant Croceine Extra ( Atul Limited )
[…] C.I.Acid Red 70 […]