Acid dyes are a class of water-soluble dyes that contain acidic functional groups in their structures. The most of acid dyes exist in the form of sodium sulfonate salts, with a few in the form of sodium carboxylate salts. Initially, these dyes were used for dyeing under acidic conditions, hence the name "acid dyes."

Acid dyes are the largest category of dyes and are mainly used for dyeing and printing wool, silk, and other protein fibers, as well as polyamide fibers. They can also be used for coloring leather, ink, paper, cosmetics, and food colorants. Acid dyes have low direct affinity for cellulose fibers, with only a few structurally complex dyes being able to dye cellulose fibers.

Acid dyes are characterized by their complete chromatography and bright colors. However, their wet processing fastness and light fastness vary greatly depending on the dye variety. with those containing simple structures and more sulfonic acid groups exhibiting poor wet processing fastness.

Classification of Acid Dyes(Application Classification)

Based on dyeing properties and applications, acid dyes can be classified into three types: strong acid bath, weak acid bath, and neutral bath.

Applications of Acid dyes

1. Exhaust dyeing

2. Jig dyeing

A. ACID LEVELING AGENT....................................................1-3%

   FOAM SUPPRESSOR AND WETING AGENT ...................0.2-0.5(G/L)

   AMMONIUM SULPHATE................................................1-2(G/L)

B. DYESTUFFS......................................................................X%

C. WASHING

Features and Applications for Acid Dyes:

Acid Yellow G:

Features: Bright yellow color, good light fastness, excellent washing fastness.

Applications: Used primarily for wool, silk, and nylon, as well as in food and cosmetics industries.

Metanil Yellow:

Features: Intense yellow shade, water-soluble, highly stable under acidic conditions.

Applications: Commonly used in textile industries for dyeing wool and silk, and in leather and paper industries.

Acid Orange II:

Features: Vibrant orange color, high solubility, suitable for dyeing at lower temperatures.

Applications: Primarily used in dyeing wool, silk, and nylon fibers; also used in leather and paper.

Acid Scarlet 3R:

Features: Bright red shade, high light fastness, suitable for acidic dyeing baths.

Applications: Used for dyeing wool, silk, and nylon, as well as in textile printing.

Acid Ink Blue G:

Features: Brilliant blue color, excellent water solubility, strong color yield.

Applications: Used in dyeing silk, wool, nylon, and also in the paper and food industries.

Acid Black 10B:

Features: Dark black shade, good light fastness, strong dye penetration.

Applications: Mainly used for dyeing wool, silk, and polyamide fibers, as well as in leather and textile industries.

Acid Black ATT:

Features: Rich black color, high color fastness, excellent for use on a variety of fabrics.

Applications: Applied mainly in dyeing wool, silk, nylon, and synthetic fibers, also used in leather dyeing.

FAQ:

What are Acid Dyes?

Acid dyes are water-soluble dyes used for dyeing proteins like wool and silk, as well as nylon and other synthetic fibers. They are known for their vibrant hues and ease of application.

What are the applications of Acid Dyes?

Acid dyes are primarily used in textile industries for dyeing wool, silk, nylon, and other polyamide fibers. They also find applications in leather dyeing, paper industries, and food coloring.

What are the key benefits of Acid Dyes?

Acid dyes provide vibrant colors, superior wash-fastness, and excellent penetration, making them suitable for high-end fabric dyeing and leather industries.

How are Acid Dyes applied?

Acid dyes are applied in a water bath with acidic conditions. The dye bath pH typically ranges from 4 to 5, depending on the fiber being dyed.

Are your Acid Dyes eco-friendly?

We offer Acid Dyes that meet international environmental standards for safe use in textile and industrial applications.

Request a free sample to see the superior quality of our Acid Dyes.