2,3-Pyridinedicarboxylic Anhydride (CAS 699-98-9) Technical Guide
Table of Contents
1. Product Overview & Specifications
| Parameter | Specification |
|---|---|
| Chemical Name | 2,3-Pyridinedicarboxylic anhydride |
| CAS Number | 699-98-9 |
| Molecular Formula | C7H3NO3 |
| Molecular Weight | 149.10 g/mol |
| Appearance | White crystalline powder |
| Purity | ≥95% (typical), 98-99% (high grade) |
2. Key Physicochemical Properties
| Property | Value |
|---|---|
| Melting Point | 137-139°C |
| Boiling Point | 334.6°C at 760 mmHg |
| Density | 1.556 g/cm³ |
| Flash Point | 156.2°C |
| Vapor Pressure | 0.000127 mmHg at 25°C |
| Solubility | Slightly soluble in water, soluble in alkaline solutions |
3. Primary Applications
- Pharmaceutical Intermediate: Key precursor in synthesizing Moxifloxacin (broad-spectrum antibiotic)
- Organic Synthesis: Building block for pyridine derivatives in agrochemicals and dyes
- Research Reagent: Used in metallurgical analysis for copper ion detection
- Specialty Chemicals: Intermediate for corrosion inhibitors and polymer modifiers
4. Industrial Use Cases
Case Study 1: Antibiotic Production
Used in multi-step synthesis of Moxifloxacin HCl, demonstrating >98% reaction efficiency in carboxylation steps.
Case Study 2: High-Performance Polymers
Modified polyamide resins using this anhydride showed 15% improvement in thermal stability (TGA analysis).
5. Safety & Handling Guidelines
| Hazard | Precaution |
|---|---|
| Skin Irritation | Wear nitrile gloves and protective clothing |
| Eye Damage | Use ANSI-approved chemical goggles |
| Respiratory Risk | Employ NIOSH-certified N95 respirator in powder handling |
| Storage | Keep in sealed containers at 2-8°C under inert atmosphere |
GHS Classification: Warning (H315, H319)
6. Supplier Information
Available in pharmaceutical and industrial grades from certified manufacturers. Custom synthesis and bulk quantities (25kg+ drums) available.
Contact for Technical Specifications:
Email: info@vivalr.com
Tel: (86) 15866781826
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