Polyphosphoric Acid (PPA)
Polyphosphoric Acid (PPA) is a high-strength, viscous form of phosphoric acid valued for its exceptional catalytic power, dehydration capability, and consistency in industrial processes.
CAS # 8017-16-1
With elevated P₂O₅ content and excellent thermal stability, PPA enhances reaction efficiency and product performance in pharmaceuticals, specialty chemicals, polymer and bitumen modification, surfactants, and agrochemical production.
Its reliable quality, strong reactivity, and broad formulation versatility make it a preferred choice for manufacturers seeking improved yields, cleaner processing, and superior end-product performance.
General Properties
Chemical Name: Polyphosphoric Acid (PPA)
Empirical Formula: (HO₃P)n
Appearance: Clear to pale yellow, viscous liquid
Applications
Chemical Synthesis & Catalysis
Acts as a powerful catalyst and dehydrating agent in producing pharmaceuticals, specialty organics, and fine chemicals.
Polymer Modification
Used to modify and enhance the performance of polymers improving softening points, viscosity, and long-term stability for road construction and roofing materials.
Pharmaceutical Manufacturing
Serves as a key reagent in condensation reactions, acylation, and cyclization steps for active ingredients and intermediates.
Surfactants & Detergent Intermediates
Supports the production of phosphate surfactants and specialty additives used in industrial cleaning formulations.
Fertilizer & Agrochemical
Used in controlled processes to produce high-value phosphate compounds and intermediates.
Advantages
High Catalytic Power: PPA’s elevated acidity and P₂O₅ concentration deliver superior catalytic performance compared to standard phosphoric acid.
Improved Process Efficiency: Enhances reaction rates, improves yields, and supports cleaner reaction profiles reducing waste and energy consumption.
Versatile Across Industries: Suitable for pharmaceuticals, polymers, surfactants, and industrial processing, making it a multi-purpose solution for manufacturers.
Consistent, High-Purity Quality: Tightly controlled production ensures reliable performance in both batch and continuous processing environments.
Enhances Material Performance: In bitumen modification, PPA significantly improves elasticity, stiffness, and durability extending pavement and roofing lifespans.
Safety & Handling
Polyphosphoric Acid is a corrosive, strong acid and must be handled using proper industrial safety measures.
Causes burn on contact with skin or eyes.
Reacts exothermically with water.
Avoid inhalation of mist or vapors.
Use appropriate chemical-resistant gloves, eye protection, face shield, and acid-resistant clothing.