2,7-Naphthalenedisulfonic Acid Disodium Salt (CAS 1655-35-2) Ultimate User Guide
Table of Contents
- 1. Product Overview & Specifications
- 2. Key Applications & Industrial Uses
- 3. Performance Comparison with Alternatives
- 4. Real-World Application Cases
- 5. Procurement Guidelines for Buyers
- 6. Contact for Technical Consultation
1. Product Overview & Specifications
| Parameter | Specification |
|---|---|
| CAS Number | 1655-35-2 |
| Molecular Formula | C10H6Na2O6S2 |
| Molecular Weight | 372.23 g/mol |
| Appearance | White to off-white crystalline powder |
| Solubility | Freely soluble in water (≥500 g/L at 20°C) |
| pH (1% solution) | 6.5-8.5 |
| Storage Conditions | 2-8°C in airtight container |
Comparative Analysis with Similar Compounds
| Feature | 2,7-Naphthalenedisulfonate | 2,6-Naphthalenedisulfonate |
|---|---|---|
| Sulfonation Position | 2,7- positions | 2,6- positions |
| Thermal Stability | Stable up to 250°C | Stable up to 220°C |
| Fluorescence Efficiency | High quantum yield | Moderate yield |
2. Key Applications & Industrial Uses
Primary Industrial Applications
- Dye & Pigment Intermediate: Critical for synthesizing acid dyes and reactive dyes
- Fluorescent Whitening Agents: Key component in OB-1 and similar optical brighteners
- Electroplating Additives: Acts as dispersion agent in metal surface treatment
- Pharmaceutical Synthesis: Intermediate for sulfonated drug molecules
4. Real-World Application Cases
Case 1: Textile Dye Manufacturer (Guangzhou, China)
- Challenge: Needed high-purity intermediate for automotive fabric dyes
- Solution: Implemented 99.5% pure 2,7-isomer
- Result: 18% increase in dye yield with improved color fastness
Case 2: Electroplating Solutions Provider (Hamburg, Germany)
- Challenge: Required stable dispersant for zinc-nickel alloy plating
- Solution: 0.5-1.2% concentration in plating baths
- Result: Achieved 95% surface uniformity in corrosion-resistant coatings
5. Procurement Guidelines for Buyers
| Industry | Key Specifications | Recommended Grade |
|---|---|---|
| Textile Chemicals | Purity ≥99%, Low heavy metals | Industrial Grade |
| Pharmaceuticals | EP/JP Compliance, HPLC purity | Pharma Grade |
6. Contact for Technical Consultation
Email: info@vivalr.com
Phone: (86) 15866781826
Why Contact Us?
- Request free technical samples
- Get formulation assistance
- Discuss bulk pricing (20kg+ orders)
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