Description

Polyphosphoric Acid CAS NO 8017-16-1 is a complex inorganic acid composed of linear chains of phosphoric acid units, valued for its potent acidity and dehydrating properties. It serves as a versatile reagent and catalyst in organic synthesis, enabling key cyclization and polymerization reactions. This product is essential for manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking high-purity intermediates and efficient process chemistry.

Application

• Pharmaceutical Synthesis: Key reagent for the cyclization and dehydration steps in the production of active pharmaceutical ingredients (APIs), such as certain heterocyclic compounds.
• Agrochemical Manufacturing: Used as a catalyst and condensing agent in the synthesis of pesticides, herbicides, and plant growth regulators.
• Polymer & Resin Production: Acts as a catalyst for polymerization reactions and in the manufacture of specialty resins and flame retardants.
• Organic Intermediates: Employed in laboratory and industrial-scale synthesis of dyes, plasticizers, and other fine chemicals.
• Petroleum & Fuel Additives: Utilized in processes for improving fuel quality and as a component in certain corrosion inhibitors.
• Analytical Chemistry: Serves as a digesting agent for sample preparation in various analytical techniques.

Basic Information

Product Name	Polyphosphoric Acid
CAS No.	8017-16-1
Molecular Formula	Hn+2PnO3n+1 (mixture)
Molecular Weight	Variable (mixture)
Synonyms	PPA; Superphosphoric Acid; Phospholeum; Condensed Phosphoric Acid; Tetrapolyphosphoric Acid; Hydrogen Polyphosphate; Glassy Phosphoric Acid; Metaphosphoric Acid (common name for mixtures)
EINECS	232-417-0

Quality Control

Our Polyphosphoric Acid is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for P2O5 content, viscosity, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing assay, identity, and purity is provided with every shipment to guarantee traceability and compliance for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials. This product is hygroscopic (moisture-sensitive) and a strong acid/organic solvent; ensure containers are kept tightly sealed to prevent absorption of atmospheric moisture and corrosion. Recommended storage temperature: 15-25°C.

Specification

Item	Specification
Appearance	Viscous, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (as P2O5)	≥ 83.0 %
Viscosity	Contact for details
Heavy Metals (as Pb)	≤ 10 ppm
Iron (Fe)	≤ 5 ppm
Chloride (Cl)	≤ 10 ppm
Sulfate (SO4)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.