What Are Acid Dyes
Acid dyes are water-soluble anionic dyes which are mainly used in the dyeing and printing of fibers such as wool, silk, nylon and modified acrylic fibers. Acid dyes have low attachment to cellulose fibers. Acid dyes can also be used in the coloring of leather, paper, inks, cosmetics, feather, wood, fur, soaps, food and so on. In order to set the color, an acid like sulfuric acid, acetic and vinegar is used during the dyeing process. Acid dyes have the characteristics of complete chromatography and bright shade.
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![Acid Yellow 59]()
Acid Yellow 59Cas No.: 5601-29-6view more
Dyeing Depth: 1%/2%
Dyeing Properties: Good light fastness. Medium levelling and suitable for pale and medium shades. -
![Acid Black MG]()
Acid Black MGCas No.:view more
Dyeing Depth: 1%/3%
Dyeing Properties: Good levelling. Good washing fastness and good chlorinated water fastness in polyamide. -
![Acid Black MBH]()
Acid Black MBHCas No.:view more
Dyeing Depth: 1%/3%
Dyeing Properties: Good light fastness and good alkaline shrinkage. Good washing fastness in polyamide. -
![Acid Black ACE]()
Acid Black ACECas No.:view more
Dyeing Depth: 1%/3%
Dyeing Properties: Good levelling. Good washing fastness and good chlorinated water fastness. -
![Acid Black 234]()
Acid Black 234Cas No.: 157577-99-6view more
Dyeing Depth: 1%/3%
Dyeing Properties: Used in the dyeing of wool, silk, cotton and viscose. Also in leather. -
![Acid Black 220]()
Acid Black 220Cas No.: 70236-56-5view more
Dyeing Depth: 1%/3%
Dyeing Properties: Good levelling in wool. Very good light and wet fastness. -
![Acid Black 210]()
Acid Black 210Cas No.: 99576-15-5view more
Dyeing Depth: 1%/3%
Dyeing Properties:Medium levelling in wool. Used in leather. -
![Acid Black 207]()
Acid Black 207Cas No.: 212516-19-3view more
Dyeing Depth: 1%/3%
Dyeing Properties: Good light and wet fastness in wool. Good levelling. Suitable for grey shade. -
![Acid Black 194]()
Acid Black 194Cas No.: 61931-02-0view more
Dyeing Depth: 1%/3%
Dyeing Properties: Very good fastness. Economical dyeing of wool and polyamide. -
![Acid Black 172]()
Acid Black 172Cas No.: 61847-77-6view more
Dyeing Depth: 1%/3%
Dyeing Properties: Very good fastness. Economical dyeing of wool and polyamide. -
![Acid Black 168]()
Acid Black 168Cas No.: 12238-87-8view more
Dyeing Depth: 1%/4%
Dyeing Properties: Good migration and build up. Used in the dyeing and printing of wool, silk, polyamide and its blends. Also can be used in... -
![Acid Black 107:1]()
Acid Black 107:1Cas No.: 12218-96-1view more
Dyeing Depth: 1%/3%
Dyeing Properties: Very good light fastness. Good levelling in wool.
Your Leading Acid Dyes Supplier
Hangzhou Xiasa Hengsheng Chemical Co., Ltd was founded in 1993 in Hangzhou and it has been focusing on R&D, production and marketing of dyes (acid dyes, vat dyes, reactive dyes, unsalted dyes and ultra washable dyes) and cosmetic color lakes. The enterprise has more than 200 dye varieties. The products are widely used in silk, polyamide, wool, leather, wood, cotton, celluose fibers, writing inks, inkjet inks, daily chemicals, agrochemicals, metal, paper, medicine, coating, cosmetics and other industries.
Why Choose Us
Strong industry experience
The company started in 1993 and has over 30 years of work in dyes. We have stable production and solid industry knowledge.
Large production capacity
We run multiple plants in Zhejiang, Jiangsu, and Inner Mongolia.
Reliable quality and R&D strength
We have a skilled R&D team and a clear quality system. Our work follows the ISO9001:2015 standard to keep quality high and stable.
The classification of acid dyes
By dyeing performance
There are three types:
- Strong acid dyes
- Weak acid dyes
- Neutral acid dyes.
By chemical structures
The commonly used acid dyes could fall into azo dyes, anthraquinone dyes, triarylmethane dyes, xanthene dyes and so on.
The difference among strong acid dyes, weak acid dyes and neutral dyes
Strong acid dyes have simple molecular structures with a high proportion of sulfonic acid groups. The fibers are bound by ionic bonds. They exist in the form of anions in the dye bath. Why are they called strong acid dyes? Since the fibers should be dyed in a strong acidic dye bath. This kind of dyes have good levelling performance and bright shade, hence they are also called levelling acid dyes.
Weak acid dyes have more complicated molecular structures with a lower proportion of sulfonic groups. The fibers are dyed in a weak acidic dye bath. Normally the wet fastness of weak acid dyes is higher than that of strong acid dyes, but the levelling performance is not good as that of strong acid dyes.
Neutral dyes have smaller proportion of sulfonic acid groups in the molecular structures and the fibers are dyed in neutral baths.
Water solubility: Most of acid dyes dissolve quickly in water. Acid dyes contain negatively charged groups such as sulphonic groups which make them water soluble.
Fiber affinity: Acid dyes are suitable for protein fibers like wool and silk and synthesized polyamide fibers. But acid dyes have low attachment to cellulose fibers.
Full range of spectrum: Acid dyes have the largest variety of colors, especially a lot of bright colors.
Good fastness: A lot of acid dyes have good light fastness and wet fastness, especially metal complex acid dyes.
Compatibility: The dyeing of acid dyes can be carried out by different dyeing methods such as immersion dyeing and exhaustion dyeing.
Packing and Shipping
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FAQ
As one of the leading acid dyes manufacturers and suppliers in China, we warmly welcome you to wholesale bulk cheap acid dyes from our factory. Good service and quality products are available.
Acid Black 26, Acid Blue 335, Acid Green 73
