Acid Black 210: A Must-Read Guide for Buyers
- Dhruv Garg
- 6 hours ago
- 7 min read
Getting a deep, uniform black with consistent shade and the required fastness can be challenging, especially when the same result needs to be reproduced across production batches. Acid Black 210 is widely used for black shades in leather and suitable textile applications where shade depth, consistency and performance matter.
Choosing an Acid Black 210 supplier, however, involves more than comparing price per kilogram. Strength, shade tone, solubility, application performance, documentation and batch-to-batch consistency all need to be considered.
At Avi Chemicals, we have been manufacturing and exporting dyestuffs from Ahmedabad, India since 1980, supplying acid, direct and reactive dyes to international traders, importers and industrial buyers. Our experience across leather, wool, silk, nylon, carpet and textile applications allows us to understand dye requirements from an application and performance perspective.
This guide covers what Acid Black 210 is, where it is used, how to evaluate suppliers and what buyers should check before moving from samples to regular bulk supply.
Looking for Acid Black 210 for your application?
What Is Acid Black 210?
Acid Black 210 is a trisazo, sulfonated acid dye used to produce deep black shades in applications such as leather and suitable textile fibres. Depending on the supplier and market, it may also be marketed under different commercial or trade names.
Acid Black 210 is identified by:
C.I. Number: 300285
CAS Number: 99576-15-5
Its sulfonic acid groups contribute to its water solubility and ionic affinity for substrates such as protein fibres and polyamide fibres, making it relevant for applications including leather, wool, silk and nylon.
One important clarification for buyers: Acid Black 210 should not be confused with metal-complex acid dyes. It is not a 1:2 premetallised dye based on a chromium or cobalt metal centre. Its chemical structure is based on azo linkages with potassium counter-ions.
This distinction can be relevant when evaluating an Acid Black 210 supplier, particularly when reviewing product specifications and compliance requirements. Metal-complex dyes and non-metal-complex acid dyes can have different chemical compositions and therefore different documentation and restricted-substance considerations.
For international buyers, it is therefore important to confirm the exact colour index, CAS number, chemical identity and specification of the product being offered rather than relying only on a commercial product name.
Key Technical Properties
Class: Trisazo, sulfonated acid dye
Shade: Deep black; exact tone and undertone can vary by grade
Solubility: High water solubility, depending on product specification
Fastness: Application-specific wash, light and perspiration fastness depending on grade, substrate and dyeing/after-treatment conditions
Applications: Leather, wool, silk, nylon and other suitable acid-dye applications
Processing: Can be evaluated for exhaust dyeing and leather drum-dyeing applications according to the specific substrate and process
For international buyers comparing an Acid Black 210 manufacturer in India with an Acid Black 210 supplier in China, Italy, Brazil, Taiwan or other markets, these technical details provide a useful starting point. They help buyers confirm that the Acid Black 210 dye being offered matches the required chemical identity and quality specification.
Where Is Acid Black 210 Used?
Acid Black 210 dye is primarily evaluated for applications where acid dyes are suitable, particularly leather and textile substrates such as wool, silk and nylon. The exact performance depends on the grade, substrate, dyeing conditions and required specifications.
Textile Dyeing: Wool, Silk & Nylon
Acid Black 210 for textile applications can be used on suitable protein and polyamide fibres, including wool, silk and nylon. Buyers typically evaluate the product based on shade depth, levelness, solubility, dye uptake and the fastness properties required for the finished material.
For wool and silk, dyeing conditions such as pH, temperature and dye addition need to be controlled carefully to achieve an even shade. For nylon and other polyamide fibres, dye uptake, migration and shade reproducibility can become particularly important.
When purchasing Acid Black 210 for wool, silk or nylon, it is therefore useful to provide the supplier with the exact substrate and dyeing conditions so that the appropriate grade can be evaluated.
Leather Dyeing
Acid Black 210 for leather is an important application for tanneries and leather chemical buyers looking for a deep black shade.
The dye can be evaluated for drum-dyeing processes used for leather articles and finished products. Depending on the leather type and processing system, factors such as dye solubility, penetration, levelness, shade tone and acid fixation can influence the final result.
For applications such as footwear, belts, handbags, upholstery and other leather goods, buyers should evaluate not only the depth of black but also the required rubbing, perspiration, light and other application-specific fastness properties.
The exact dyeing recipe should be established through laboratory or production trials because leather type, tanning system, pH, temperature and auxiliaries can all affect the final result.
Paper, Ink & Niche Applications
Beyond textiles and leather, Acid Black 210 dye may also be evaluated for selected paper, ink and specialty applications, depending on the required shade, solubility and technical specifications. Buyers considering Acid Black 210 for paper or other niche applications should confirm suitability with the supplier before purchase, as application requirements can differ significantly from leather and textile dyeing.
In smaller-volume specialty applications, acid dyes may also be used where their colour and solubility characteristics are suitable, including certain laboratory or quality-control applications.
Acid Black 210 is one option within the broader range of acid dyes available for leather, wool, silk, nylon and other suitable applications.
Buyers comparing black and other acid dye grades can view Avi Chemicals' full Acid Dye (Colacid) range to explore the available shades and application options.
Why Buyers Choose Acid Black 210?
For buyers, the value of an Acid Black 210 supplier is not simply the ability to supply a black dye. The product needs to deliver consistent performance under the customer's actual processing conditions.
Consistent Shade and Batch Reproducibility
For manufacturers and distributors, shade variation between production lots can result in rework, additional dye consumption, production delays and customer complaints.
A reliable Acid Black 210 manufacturer should therefore have defined quality-control procedures for monitoring parameters such as shade, strength and other agreed specifications before a batch is released.
For repeat orders, buyers should retain an approved reference sample and compare subsequent lots against the agreed specification.
Avi Chemicals' dye testing and quality control laboratory supports testing of dye strength, shade consistency, solubility and application performance before products are released for supply.
Fastness Requirements
Fastness is another important consideration when selecting an Acid Black 210 dye, particularly for leather goods, garments and other products exposed to washing, rubbing, perspiration or light.
The required fastness depends on the substrate, end use, dyeing process and after-treatment. Buyers should therefore avoid relying solely on generic fastness claims and instead request application-specific or lot-specific test information where required.
Process Compatibility
Acid Black 210 can be evaluated across different acid-dye applications, including exhaust dyeing of wool, silk and nylon and drum-dyeing applications for leather, provided the grade and process conditions are appropriate.
The actual dyeing recipe should always be established through laboratory or production trials rather than assuming that the same recipe will work across
different substrates.
Sourcing Acid Black 210: What International Buyers Should Check
Whether you are sourcing Acid Black 210 from India, China, Europe, Brazil or another market, the fundamental supplier-qualification process remains similar. The right supplier should be able to provide consistent product quality, appropriate documentation and reliable commercial support, not simply the lowest price per kilogram.
For Italian leather and footwear manufacturers, consistency, technical documentation and applicable EU compliance requirements can be particularly important. Buyers evaluating an Acid Black 210 supplier in Italy or an international supplier serving the Italian market should confirm the required shade and strength, request COA, SDS/MSDS and TDS documentation, and approve a representative sample before moving to regular supply.
In China, where buyers have access to a large domestic dyestuff manufacturing base, international suppliers may still be considered for alternative sourcing, specific specifications or commercial advantages. Buyers searching for an Acid Black 210 supplier in China may therefore compare price, product consistency, MOQ flexibility, technical specifications, sample performance and LCL/FCL shipping options.
For Brazilian leather and footwear manufacturers, the delivered cost of an Acid Black 210 supplier in Brazil can be influenced by freight, packaging, shipping terms and lead time in addition to the product price. For tanneries and chemical distributors, consistent supply and predictable logistics can therefore be as important as the initial quotation.
Core Documentation to Request
Regardless of destination, international buyers should consider requesting:
Certificate of Analysis (COA)
Safety Data Sheet (SDS/MSDS)
Technical Data Sheet (TDS)
Shade and strength information
CAS and Colour Index confirmation
Product specification
Packaging details
MOQ
Incoterm and shipping options
Applicable compliance documentation
Where chemical composition or regulatory status is important, buyers should also ask the Acid Black 210 manufacturer to confirm the actual product identity and applicable compliance requirements rather than relying only on a commercial trade name.
Avi Chemicals supports international dye shipments with export documentation and logistics. Get in touch with our global dye export team to learn more about documentation and logistics for both FCL and LCL shipments.
Why Choose Avi Chemicals as Your Acid Black 210 Supplier?
Selecting a long-term Acid Black 210 supplier is ultimately about consistency, communication and reliability as much as the product itself.
Avi Chemicals has manufactured dyes in Ahmedabad, India since 1980, a track record spanning more than four decades of production, export, and technical support across reactive, acid, and direct dyes.
As a manufacturer, we produce Acid Black 210 under strict in-house quality control, with every batch backed by CoA, MSDS, and TDS documentation.
We work with international traders, distributors, importers and industrial buyers across markets including Italy, Turkey, Morocco, Bangladesh, Vietnam, Indonesia, Brazil, China, Taiwan, Japan and other export destinations.
Our dye manufacturer team also provides technical support on process parameters for drum-dyeing leather or exhaust dyeing wool, silk, and nylon, helping reduce trial-and-error time for buyers evaluating Acid Black 210 manufacturer options for the first time.
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FAQs
Q. How should I evaluate an Acid Black 210 supplier?
A. Compare suppliers on product identity, strength, shade, solubility, quality control, batch consistency, documentation, sample performance, MOQ, lead time and total delivered cost, not just the quoted price per kilogram.
Q. Is Acid Black 210 suitable for continuous or drum dyeing processes?
A. Yes. It performs reliably in exhaust dyeing for wool, silk, and nylon, and in drum dyeing for leather, making it flexible across different production setups.
Q. What documentation should I request when importing Acid Black 210 in bulk?
A. At minimum, ask for a Certificate of Analysis (CoA), MSDS, and TDS for each batch, and confirm shade strength against a reference standard. For leather and fashion applications in regulated markets like the EU, also confirm REACH compliance.
Q. Can I request an Acid Black 210 sample before placing a bulk order?
A. Yes. A laboratory sample should ideally be tested under the buyer's normal leather or textile processing conditions before approving a commercial quantity. This helps confirm shade, strength, solubility and application performance before moving to regular supply.
Q. What is the MOQ for Acid Black 210 from Avi Chemicals?
A. Trial quantities and commercial MOQs can vary depending on the destination, packaging and shipping requirements.
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