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%
 
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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

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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