For chemists and product formulators in the dye industry, understanding the nuances of key intermediates is vital for innovation and efficiency. 2,5-Diaminobenzenesulfonic acid (CAS 88-45-9) is a prime example of such a critical compound, essential for creating vibrant and durable colors. This article serves as an expert guide for B2B users, detailing its properties, applications, and the importance of sourcing from a quality-conscious manufacturer.

Chemical Properties and Reactivity of 2,5-Diaminobenzenesulfonic Acid

With the molecular formula C6H8N2O3S and a molecular weight of 188.20, 2,5-diaminobenzenesulfonic acid is characterized by its two amino groups (-NH2) and a sulfonic acid group (-SO3H) on a benzene ring. This unique structure imparts specific reactivity, making it an excellent diazo component in azo dye synthesis. The amino groups can be readily diazotized to form diazonium salts, which then couple with various nucleophilic components to create chromophores responsible for color. The presence of the sulfonic acid group enhances water solubility and affinity for cellulosic fibers, a key characteristic for direct dyes.

Applications in Advanced Dye Formulations

The primary application for 2,5-diaminobenzenesulfonic acid is as a precursor in the manufacture of substantive dyes, which are applied directly to fibers from an aqueous solution. It is particularly noted for its use in producing:

  • Direct Black 32
  • Direct Blue 176
  • Black Blue G

These dyes are staples in the textile industry for cotton, rayon, and other cellulosic materials. Furthermore, its utility extends to more advanced applications, such as its role in laccase-mediated dyeing, a process gaining traction for its potential environmental benefits in textile coloration. For researchers and formulators, understanding how to effectively buy 2,5-diaminobenzenesulfonic acid with a guaranteed high assay (98%min) is crucial for consistent experimental and production outcomes.

Sourcing High-Quality Intermediates: The Manufacturer's Advantage

When seeking 2,5-diaminobenzenesulfonic acid for sale, B2B professionals often look for reliable suppliers with robust quality control measures. Partnering with an experienced manufacturer, especially one based in China, offers distinct advantages:

  • Quality Assurance: Reputable manufacturers provide detailed Certificates of Analysis (CoA) confirming the 98%min purity.
  • Technical Support: Access to experts who can advise on handling and usage.
  • Bulk Availability: Consistent supply to meet large-scale production demands.
  • Cost Efficiency: Competitive pricing structures are often available for bulk purchases.

As a leading producer and supplier of essential dye intermediates, we ensure that our 2,5-diaminobenzenesulfonic acid meets stringent quality standards. We understand the intricate needs of R&D scientists and product developers who rely on consistent, high-purity materials to drive their innovations forward. If you are looking to purchase this critical intermediate, we invite you to connect with us to explore how we can support your formulation needs with quality products and expert insights.