2,2′-Benzidinedisulfonic Acid (CAS 117-61-3) Comprehensive Guide
Table of Contents
1. Product Overview & Specifications
Chemical Name: 2,2′-Benzidinedisulfonic Acid
CAS Number: 117-61-3
Molecular Formula: C₁₂H₁₄N₂O₆S₂
| Parameter | Specification |
|---|---|
| Appearance | Light yellow to brown crystalline powder |
| Solubility | Water-soluble (≥50 g/L at 20°C) |
| Purity | ≥98% (HPLC) |
| Storage | 2-8°C in airtight container |
2. Key Applications & Industrial Uses
A. Dye Manufacturing: Critical intermediate for azo dyes and pigments
B. Analytical Chemistry: Chromogenic reagent for peroxidase detection
C. Polymer Production: Sulfonation agent in specialty polymers
3. Performance Comparison with Alternatives
| Property | 2,2′-Benzidinedisulfonic Acid | o-Tolidine | Benzidine |
|---|---|---|---|
| Water Solubility | High | Low | Insoluble |
| Thermal Stability | Up to 150°C | 120°C | 100°C |
| Reactivity | Controlled sulfonation | Unmodified | Base structure |
4. Implementation Case Studies
Case 1: Textile Dye Synthesis
- Challenge: Achieving colorfastness in nylon fabrics
- Solution: Optimized diazotization process using 0.8% w/w
- Result: 40% improvement in wash-fastness ratings
5. Verified Customer Success Stories
Client A: European Specialty Chemicals Manufacturer
- Application: High-performance polymer modification
- Volume: 500kg/month
- Outcome: 22% reduction in sulfonation time
6. Technical Consultation & Quotation
Contact our chemists for:
- Custom synthesis options
- Bulk pricing (≥100kg orders)
- Regulatory compliance documentation
Email: info@vivalr.com
Phone: (86) 15866781826
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