Description

Orthophosphoric Acid CAS NO 7664-38-2 is a fundamental inorganic acid and a key industrial chemical, widely recognized for its versatility and reactivity. Its primary value lies in its ability to act as a powerful acidulant, sequestrant, and chemical intermediate across diverse manufacturing processes. This product is essential for industries ranging from food and beverage production to metal treatment, fertilizer manufacturing, and electronics. We supply high-purity grades to meet the stringent demands of global B2B customers, ensuring consistent quality and reliable supply chain support.

Application

• Food & Beverage Industry: Used as an acidulant (E338) in cola beverages, jams, and processed cheeses to regulate acidity and enhance flavor.
• Metal Surface Treatment: Employed in rust removal, phosphating, and passivation processes to clean and prepare metal surfaces for painting or coating.
• Fertilizer Production: A crucial raw material for manufacturing phosphate-based fertilizers such as ammonium phosphates and triple superphosphate.
• Water Treatment: Acts as a pH adjuster, corrosion inhibitor, and scale prevention agent in industrial water systems and potable water treatment.
• Chemical Synthesis: Serves as a catalyst and reactant in the production of activated carbon, alumina, and various phosphate salts.
• Pharmaceutical & Personal Care: Utilized as an acidifying agent in dental cements, mouthwashes, and some topical pharmaceutical formulations.
• Electronics: Applied in the etching and cleaning of silicon wafers and other semiconductor components during microfabrication.
• Detergent & Cleaning Products: A component in industrial and institutional cleaners for its descaling and chelating properties.

Basic Information

Product Name	Orthophosphoric Acid
CAS No.	7664-38-2
Molecular Formula	H3PO4
Molecular Weight	97.99 g/mol
Synonyms	Phosphoric Acid; White Phosphoric Acid; o-Phosphoric Acid; Orthophosphoric Acid (85%); Food Grade Phosphoric Acid; EPA Chemical Code 076001; IUPAC name: Phosphoric Acid; E338.
EINECS	231-633-2

Quality Control

Our Orthophosphoric Acid is manufactured under strict quality management systems. We offer various grades, including Food Grade (FCC), Technical Grade, and high-purity grades suitable for demanding applications. Each batch undergoes rigorous analytical testing to ensure compliance with relevant specifications for parameters such as assay, heavy metals, and chloride content. Certificates of Analysis (COA) are available upon request to provide full traceability and quality assurance for your procurement and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from incompatible materials such as strong bases and reactive metals. The product is a strong acid/organic solvent; ensure storage containers are made of compatible materials like stainless steel, polyethylene, or glass. Recommended storage temperature is between 15°C and 25°C. Keep away from heat and sources of ignition.

Specification

Item	Specification
Appearance	Colorless, viscous liquid
Identification (IR)	Conforms
Assay (H3PO4)	≥ 85.0%
Color (APHA)	≤ 20
Chloride (Cl)	≤ 5 ppm
Sulfate (SO4)	≤ 50 ppm
Heavy Metals (as Pb)	≤ 5 ppm
Arsenic (As)	≤ 0.5 ppm
Iron (Fe)	≤ 5 ppm

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