Acid Blue 72 is soluble in water and ethanol is purple. It is golden yellow to golden orange in concentrated sulfuric acid, and turns into pale green after dilution. Adding sodium hydroxide to the aqueous solution has a purple precipitate.
TRADE NAME:Acid Blue EGL
CAS NO: 12219-17-9
Leveling(grade) | Displacement | Whitening | Solubility(g/L) | Metal ion effect(grade) | ||
copper | iron | chromium | ||||
5 | B | bad | 40(90℃) | D | — | — |
Test Methods | fiber | Alkali resistance | Carbonization | potting | Alkali fluff | Acid fluff | soaping | Perspiration | Sun exposure | |||
discolor | Staining | discolor | Staining | discolor | Staining | |||||||
ISO | wool | 4~5 | 4~5 | 5 | 1 | 1 | 4 | 4 | 2 | 3~4 | 4 | 5~6 |
Fixing situation | soaping (60℃) | Alkali perspiration | Flooding | Sun exposure | ||||||
discolor | Nylon stain | Cotton stain | discolor | Nylon stain | Cotton stain | discolor | Nylon stain | Cotton stain | ||
Unfixed | 4 | 4 | 5 | 4~5 | 3~4 | 4~5 | 5 | 4 | 4~5 | 6 |
Fixing | 4~5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | |
Used for silk, acrylic, tannin mordant dyeing cotton dyeing, also can be used for leather, paper, hemp and glue directly printing and dyeing, the discharge printing. Can also be used in oil and fat, paint color, also can be used in the preparation of color which used in ink.
Acid Blue 72 works best on protein fibers like wool and silk, but it can also dye nylon and other synthetic fibers with good results.
This dye shows excellent light and washing fastness, maintaining vibrant blue tones even after repeated laundering.
Yes, it is compatible with many acid dyes and dyeing auxiliaries, allowing custom shades and blending without reducing dye performance.
Keep the dye in a cool, dry place, away from direct sunlight and moisture to maintain its stability and dyeing quality over time.
Yes, it can be used on leather, providing bright, even coloration while retaining the material’s natural texture.
