Application of acid violet 48 in textile dyeing

1. Properties of acid violet 48
Acid violet 48 is a weak acid dye in the form of a purple powder, easily soluble in water, and its aqueous solution is red. Its color changes under different pH values: it is red under acidic conditions, dark purple under neutral conditions, and light purple under alkaline conditions. This dye has high wet fastness and compatibility, and is suitable for dyeing a variety of fibers.

2. Application of acid violet 48 in textile dyeing
Acid violet 48 is mainly used for dyeing protein fibers and synthetic fibers such as wool, silk, and nylon.

Due to its weak acidic properties, the dye can form ionic bonds with the fiber during the dyeing process, thereby achieving a good coloring effect. Acid violet 48 is also used for dyeing blended fibers, such as tussah silk and vinylon.

1. Dyeing process
The dyeing process of acid violet 48 usually includes the following steps:
Pretreatment: pre-treat the fabric to remove impurities and improve dyeing uniformity.
Dyeing: Soak the fabric in a dye solution containing Acid Violet 48, and control the temperature, time and pH value to optimize the dyeing effect.
Fixation: Improve the dyeing fastness by adding a fixing agent (such as formaldehyde or non-formaldehyde fixing agent).
Cleaning and post-treatment: Wash the fabric to remove unfixed dyes and soften or set them.
The dyeing process of Acid Violet 48 has the following characteristics:
High wet fastness: The fabric dyed with Acid Violet 48 has good color stability in wet state.
Strong compatibility: The dye can be mixed with other dyes and is suitable for a variety of dyeing processes.

2. Application fields
Acid Violet 48 is widely used in the following fields:
Textile dyeing: used for direct printing and dyeing of fibers such as wool, silk, and nylon.
Functional textiles: Acid Violet 48 can be used for dyeing environmentally friendly textiles through microwave radiation-assisted dyeing technology.
Paper and leather dyeing: Acid Violet 48 is also suitable for dyeing paper and leather.

3. Production method of acid violet 48
The production of acid violet 48 involves multiple chemical reaction steps, including ring bromination, amine formation, ether formation and sulfonation reaction. Its main synthetic raw materials include α-aminoanthraquinone, mesidine and p-tolylphenol, and the target compound is finally generated through a series of chemical reactions.

4. Environmental protection characteristics
With the improvement of environmental awareness, the production and application of acid violet 48 are also developing in the direction of greening. Microwave radiation-assisted dyeing technology can significantly reduce the use of dyes and energy consumption. The dyeing wastewater of acid violet 48 can be treated by adsorbents or advanced oxidation technology to reduce the impact on the environment