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Phosphoric Acid 105%–120%

High Purity Phosphoric Acid Manufacturer – CAS 8017-16-1

Vanchor supplies Polyphosphoric Acid, CAS 8017-16-1, in 105%–120% H₃PO₄ equivalent grades. Its high phosphate content supports phosphate production, mineral processing, fertilizer manufacturing, metal treatment, and chemical synthesis.

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Data Sheet

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Formula:

H₃PO₄
CAS Number:

8017-16-1
Purity:

105%-120%
Product Name:

Polyphosphoric Acid
Abbreviation

PPA
Available Strength

105%–120% H₃PO₄ Equivalent
Approximate P₂O₅ Equivalent

Approx. 76%–87%, depending on grade
Appearance：

Colorless to pale yellow or light brown viscous liquid
Specific Gravity：

Approx. 1.92–2.08 at 25°C, depending on grade

Polyphosphoric Acid 105%–120% Manufacturer and Supplier

Vanchor supplies Polyphosphoric Acid from 105% to 120% H₃PO₄ equivalent for specialty chemical manufacturing and processes requiring high phosphorus content, reduced free water and strong dehydrating or catalytic performance.

Polyphosphoric Acid is not simply “phosphoric acid with more than 100% purity.” It is a condensed mixture of orthophosphoric acid, pyrophosphoric acid and higher-chain phosphoric acids formed through controlled dehydration.

The stated 105%–120% strength is expressed on an H₃PO₄-equivalent basis. It represents concentrated phosphorus pentoxide content and condensed phosphate structure rather than literal free orthophosphoric acid purity.

It plays a key role in many industries due to its:

Strong acidity

Excellent solvent capability

High chemical reactivity

Wide compatibility with organic reactions

How the Different PPA Strengths Are Positioned

PPA 105%–108%

Lower-strength PPA grades offer a balance between condensed phosphate content and material-transfer convenience.

They may be selected for:

Processes requiring easier pumping than higher-strength PPA
Phosphate production
Phosphate ester manufacturing
Polyol phosphorylation
Organic reaction catalysis

Strengthening lower-concentration phosphoric acid

PPA 115%–118%

These grades provide higher P₂O₅ content and lower free water.

They are suitable for evaluation in:

Polymerization and dehydration reactions
Specialty organic synthesis
Pigment production
Flame-retardant phosphate intermediates
Phosphate ester surfactants
Asphalt modification
High-performance chemical formulations

PPA 119%–120%

The highest-strength grades are selected for specialized processes requiring very low water input and maximum condensed phosphate content. They may provide:

Higher dehydrating capacity
Reduced process water
Higher phosphorus input per unit of material
Stronger reaction-driving capability
Lower downstream water-removal demand

However, viscosity, material compatibility, pumping and temperature control become increasingly important as PPA strength increases. The final grade should be selected through process trials and agreement between the customer’s technical team and supplier.

Major Applications of Phosphoric Acid

Phosphate Ester Manufacturing

PPA is used as a raw material for producing phosphate esters and for the phosphorylation of polyols.

Typical downstream products may include:

Flame-retardant phosphate esters
Specialty surfactants
Plastic and polymer additives
Functional phosphorus intermediates

ICL identifies phosphate esters, polyol phosphorylation and phosphate ester surfactants as established PPA application areas.

Organic Synthesis Catalyst

Polyphosphoric Acid can act as both an acid catalyst and a dehydrating medium. It may be used in reactions involving:

Dehydration
Rearrangement
Polymerization
Cyclization
Acylation
Condensation reactions

Industrial SDS information identifies rearrangement, polymerization and dehydration as intended PPA applications.

Asphalt Modification

Selected PPA grades are used as asphalt modifiers to improve the thermo-mechanical properties of asphalt binders. Depending on the bitumen source and formulation, PPA may be evaluated for:

High-temperature rutting resistance
Binder stiffness adjustment
Polymer-modified asphalt optimization
Pavement-performance formulation
Reduced dependence on certain polymer levels

Performance must be verified using the customer’s bitumen, polymer system and applicable road-testing standard.

Pigment Manufacturing

PPA is used in selected pigment-production processes where a strong acidic and dehydrating reaction medium is required. Its high acidity and low water content can support controlled condensation, cyclization, and intermediate-conversion reactions during pigment synthesis.

Depending on the pigment chemistry and process design, PPA may be evaluated for:

Specialty organic pigment production
High-performance pigment intermediates
Dehydration and condensation reactions
Reaction-viscosity and temperature control
Improved conversion of selected raw materials
Processes requiring a low-moisture acidic medium

Performance should be verified according to the customer’s raw materials, reaction conditions, target pigment specifications, and applicable quality-control requirements.

Flame Retardants and Specialty Polymers

PPA may be used in the production of phosphorus-containing flame-retardant intermediates and specialty polymer chemicals. Its strong acidity and reduced free-water content can support reactions in which moisture may interfere with conversion efficiency, molecular structure, or final product quality.

Depending on the formulation and process requirements, PPA may be evaluated for:

Phosphorus-based flame-retardant intermediates
Specialty polymer additives and modifiers
Condensation and phosphorylation reactions
Low-moisture chemical synthesis
Improved conversion of moisture-sensitive raw materials
Production processes requiring a strong acidic reaction medium

Suitability should be verified according to the customer’s raw materials, reaction conditions, target phosphorus content, polymer compatibility, and flame-retardancy performance requirements.

Mining, Oil and Gas Chemicals

Commercial PPA suppliers position the material for selected mining, oil and gas, pigment-manufacturing, and specialty industrial applications. Its high acidity, elevated phosphate content, and low free-water level can support processes requiring a concentrated acidic or dehydrating medium.Depending on the process and formulation, PPA may be evaluated for:

Mineral treatment and selected ore-processing operations
Oilfield and refinery chemical formulations
Specialty drilling and production chemicals
Organic pigments and pigment intermediates
Industrial catalysts and reaction promoters
Phosphate-containing additives and specialty chemicals
Processes requiring controlled acidity and limited water content

Suitability should be confirmed using the customer’s raw materials, equipment, process conditions, and final product specifications. Laboratory and pilot-scale testing are recommended before commercial production.

Phosphoric Acid Technical Specifications