CAS · 211366-30-2
Product Overview
1,5-Naphthalenedisulfonic acid tetrahydrate is a high-purity pharmaceutical-intermediates supplied for industrial and specialty chemical applications. Contact our team for specifications, packaging options and lead times.
Product Specifications
| Appearance: | Off-White crystal powder |
|---|---|
| Purity (HPLC): | 98.0% min |
| Fe: | 40 ppm max |
| Water-insoluble: | 0.2% max |
| Ash: | 0.1% max |
| Water: | 25% max |
Applications
1,5-Naphthalenedisulfonic acid tetrahydrate is a sulfonated aromatic compound widely used in dye, pigment, and chemical synthesis industries. It serves as an intermediate for the production of azo dyes, fluorescent brighteners, and optical brightening agents due to its highly water-soluble sulfonic acid groups, which improve dye solubility and affinity for fibers. In polymer and resin chemistry, it is employed as a dispersing and sulfonating agent to enhance stability, wettability, and ionic interaction of materials. The compound is also used in analytical chemistry as a reagent for titration, complex formation, and pH buffering applications, taking advantage of its strong acidity and solubility.
Benefits
The compound provides high water solubility and strong acidity, which make it an effective dispersant, sulfonating, and stabilizing agent in various chemical processes. Its aromatic disulfonic structure enhances reactivity and allows selective derivatization for the synthesis of dyes, fluorescent compounds, and polymers. The tetrahydrate form improves handling and reproducibility in aqueous solutions, ensuring consistent performance in industrial and laboratory applications. Additionally, its thermal and chemical stability allows it to maintain functionality under demanding process conditions.
Conclusion
1,5-Naphthalenedisulfonic acid tetrahydrate is a versatile intermediate for the dye, pigment, polymer, and analytical chemistry sectors. Its dual sulfonic groups, high solubility, and chemical stability make it essential for producing water-soluble dyes, dispersants, and functionalized materials, supporting efficient, high-performance industrial and research applications.
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