pyrophosphoric acid cas 2466-09-3
Chemical Name: Pyrophosphoric acid
CAS No.:2466-09-3
Molecular Fomula:H4O7P2
Molecular weight:177.98
Appearance:Colourless acicular crystalline or light yellow sticky liquid
Assay:≥95%
related documents:
COA of Pyrophosphoric acid CAS 2466-09-3
TDS of Pyrophosphoric acid CAS 2466-09-3
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Pyrophosphoric Acid (CAS 2466-09-3): Comprehensive Technical Guide
Table of Contents
1. Product Overview & Specifications
| Parameter | Pyrophosphoric Acid | Orthophosphoric Acid |
|---|---|---|
| CAS Number | 2466-09-3 | 7664-38-2 |
| Molecular Formula | H4P2O7 | H3PO4 |
| Molecular Weight | 177.98 g/mol | 98.00 g/mol |
| Appearance | Colorless viscous liquid/crystalline | Clear viscous liquid |
| Melting Point | 54.3°C (Type I) 71.5°C (Type II) |
42.4°C |
| Solubility | Miscible with H2O, ethanol, ether | Fully water-soluble |
2. Key Applications
2.1 Catalytic Processes
Acts as high-performance catalyst in organic synthesis for esterification and polymerization reactions, with 20-30% higher efficiency than conventional acids.
2.2 Metal Surface Treatment
Essential component in electroplating solutions (pH 3.5-5.0 range) for:
- Copper electrodeposition
- Non-cyanide zinc plating
- Aluminum anodizing
2.3 Specialty Chemicals Production
Critical raw material for manufacturing:
- Organophosphorus flame retardants
- Lithium-ion battery electrolytes
- Pharmaceutical intermediates
3. Industrial Use Cases
3.1 Metal Finishing Optimization
In zinc-nickel alloy electroplating systems, 0.5-1.2% pyrophosphoric acid concentration improves:
- Coating uniformity (+40%)
- Corrosion resistance (500h salt spray test)
- Current efficiency (88-92%)
3.2 Polymer Stabilization
As peroxide stabilizer in PVC production:
- Reduces thermal degradation by 60%
- Extends processing window by 15-20°C
- Maintains CIELAB color stability ΔE < 2.0
4. Client Success Stories
Case 1: Precision Electronics Manufacturer
Challenge: Achieve ≤5μm copper layer uniformity on high-density interconnect PCBs
Solution: Custom pyrophosphoric acid-based electrolyte (0.8M concentration)
Results: 32% reduction in surface roughness (Ra 0.18μm), 99.2% plating uniformity
Case 2: Specialty Chemical Producer
Challenge: Develop non-toxic flame retardant for aerospace composites
Solution: Pyrophosphoric acid-derived oligomeric phosphate ester
Results: UL94 V-0 rating at 1.2mm thickness, 28% weight reduction vs conventional systems
5. Technical Inquiry
Our technical team provides:
- Material compatibility testing
- Process optimization consultations
- Custom formulation development
Contact our specialists for application support:
Email: info@vivalr.com
Tel: (86) 15866781826



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