Acid Yellow 11 100% with yellow powder used on silk

Acid Yellow 11 (Acid light yellow G ),Stable at room temperature and pressure, yellow powder, easily soluble in water, the color does not change when 10% sulfuric acid or sodium hydroxide is added to the aqueous solution. Soluble in ethanol, yellow. Soluble in acetone and ethylene glycol ether. Slightly soluble in benzene, insoluble in other organic solvents. Yellow in concentrated sulfuric acid, no change after dilution; yellow in concentrated nitric acid. When dyeing, the color is redder when it encounters copper ions; darker when it encounters iron ions.

A.Acid Light Yellow G is mainly used for dyeing and direct printing of wool, silk and their fabrics, with good discharge and leveling properties. It is usually dyed in acetic acid dye bath, and can also be used for dyeing light to medium colors such as beige, camel, and gray. It can also be used for dyeing nylon. When used for dyeing wool and other fibers in the same bath, nylon can be dyed, silk is severely stained, acetate is slightly stained, and cellulose is not stained. Acid Light Yellow G can also be used for coloring paper, leather, coatings, medicine, and cosmetics, and can also be made into lake pigments.

B. Acid dyes are a class of dyes with unique properties. They exist in anionic form and are applied through an acid bath such as sodium salts of sulfonic, carboxylic or phenolic organic acids (less commonly ammonium salts).

C. They are soluble in water and have a strong affinity for protein fibers such as wool, silk and nylon. However, their affinity for cellulose fibers is lower than that of direct dyes.

D. Acid dyes bind to fibers through ionic bonds, hydrogen bonds and van der Waals forces, giving them excellent performance characteristics during the dyeing process. In addition to being widely used in the textile industry, acid dyes are also used in food coloring, medical microscopy and cleaning products, showing a variety of uses.