Description

Pyrophosphoric Acid is a high-purity, inorganic polyphosphoric acid known for its strong chelating and sequestering properties. This versatile chemical intermediate is critical for processes requiring precise phosphate chemistry and controlled acidity. It serves as a fundamental building block for manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking reliable, high-quality raw materials.

Application

• Pharmaceutical Synthesis: Used as a catalyst and reagent in the production of nucleotides, active pharmaceutical ingredients (APIs), and other phosphate-containing compounds.
• Agrochemical Formulations: Acts as a key intermediate in the synthesis of phosphate-based herbicides, fungicides, and plant growth regulators.
• Catalyst Production: Serves as a precursor for solid acid catalysts and in the preparation of metal phosphates used in various industrial catalytic processes.
• Metal Surface Treatment: Employed in metal cleaning, pickling, and surface passivation formulations due to its chelating action on metal ions.
• Analytical Chemistry: Utilized as a standard and reagent in analytical procedures, including complexometric titrations and buffer solutions.
• Specialty Chemical Manufacturing: Functions as an intermediate for synthesizing other phosphate esters, flame retardants, and corrosion inhibitors.

Basic Information

Product Name	Pyrophosphoric Acid
CAS No.	2466-09-3
Molecular Formula	H4P2O7
Molecular Weight	177.98 g/mol
Synonyms	Diphosphoric Acid; Hydrogen Pyrophosphate; Pyrophosphoric Acid (H4P2O7); Tetrahydroxidooxidophosphorus Oxidohydroxidophosphorus; UNII-4E862E7GRQ; Phosphono Dihydrogen Phosphate; Acidum Pyrophosphoricum
EINECS	219-574-1

Quality Control

Our Pyrophosphoric Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise chemical and physical specifications. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming identity, purity, and conformance to agreed-upon standards. We support compliance with global regulatory frameworks including REACH.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and a strong acid; containers must be kept tightly sealed to prevent absorption of atmospheric moisture and contamination. Store away from incompatible materials such as strong bases and organic solvents.

Specification

Item	Specification
Appearance	Colorless, viscous liquid or crystalline solid
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0 %
Water Content (KF)	≤ 3.0 %
Orthophosphoric Acid	≤ 2.0 %
Heavy Metals (as Pb)	≤ 10 ppm
Iron (Fe)	≤ 5 ppm

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