Acid Red 6 is a water-soluble synthetic azo dye primarily used in the textile, leather, paper, and ink industries. Known for its bright reddish hue, it is valued for its strong affinity to protein fibers such as wool, silk, and nylon, as well as its ability to deliver vivid shades in aqueous dyeing systems.
Soluble in water for big red, on 90 ℃ water solubility of 80 g/L, soluble in ethanol in red. Dye of sulfuric acid in a cherry red, diluted into red. Its water solution and strong hydrochloric acid into red, precipitation; Add thick sodium hydroxide solution to orange. Discharge of copper, iron ion in color shade darker.
The appearance is yellow red powder. It is soluble in water and is red. The solubility in water is 80g/L (90°C), soluble in ethanol. It is red in case of concentrated sulfuric acid, and turns red after dilution. The concentrated hydrochloric acid turned red and precipitated; after adding concentrated sodium hydroxide solution, it turned orange.
TRADE NAME:Acid Red EB,Acid Brilliant Red E-B,Acid Red B,Telon Red BW,Aminyl Brillant Red E-B,Suminol Fast Red B,Supramin Red B
Standard | Fiber | Soaping | Persperation Fastness | Oxygen bleaching | Light | |
Fading | Stain | |||||
ISO | Wool | 3 | 3 | 2-3 | 3 | 4 |
Test Methods | fiber | Alkali resistance | Carbonization | Oxygen bleaching | potting | Alkali fluff color change | Acid fluff color change | Seawater discoloration | soaping | Perspiration | Sun exposure | |
discolor | Staining | |||||||||||
ISO | wool | 3 | 5 | 3 | 5 | 2 | 2 | 3 | 3 | 3 | 2~3 | 4 |
Acid Red 6 is widely used in textile dyeing for wool, silk, and nylon fabrics. Beyond textiles, it finds applications in paper coloration, leather finishing, and formulation of inks where bright red tones are required.
The dye has a strong affinity for protein fibers, allowing deep penetration and uniform shades during acid dyeing. It is compatible with standard acid dyeing auxiliaries and produces vivid, long-lasting colors.
Yes, Acid Red 6 is often blended with other acid dyes to achieve a wide range of color shades. It works well in combination with yellows, blues, or browns to create custom hues for industrial use.
The dye should be stored in a cool, dry environment away from direct sunlight and strong oxidizing agents. Properly sealed packaging helps maintain its stability and prevents clumping due to moisture absorption.
Acid Red 6 exhibits good lightfastness and wash fastness on suitable substrates. While fastness can vary depending on fiber type and dyeing method, it generally provides reliable performance in end-use applications.
