Phosphoric Acid
Phosphoric Acid (H3PO4) is a strategic phosphorus derivative with relevance across both high-volume and high-purity end markets. Minerva’s phosphoric acid platform is intended to serve food-grade, electronic-grade, and semiconductor-grade applications, supporting industries ranging from food and beverage formulation to advanced microelectronics processing. In addition to its direct use as an acidulant and process chemical, phosphoric acid is a key precursor to phosphate salts used in agriculture, water treatment, detergents, and specialty industrial formulations.
| Properties | Description |
|---|---|
| Chemical formula | H3PO4 |
| Molecular Weight | 98.00 g/mol |
| Available Grades | Food Grade / Electronic Grade / Semiconductor Grade |
| Purity | As per product grade and customer specification |
| Melting Point (°C) | 42.0 |
| Boiling Point (°C) | 213.0 |
| CAS No. | 7664-38-2 |
| Appearance | Colorless, clear liquid / crystalline solid depending on concentration and temperature |
Applications
Food and Beverage
Food-grade phosphoric acid is widely used as an acidulant, pH control agent, flavoring aid, and sequestrant in food systems. FDA listings identify phosphoric acid for technical effects including antimicrobial use, flavor enhancement, flavoring/adjuvant functions, pH control, and sequestration. In practical market terms, this makes food-grade phosphoric acid relevant to beverages, processed foods, fermentation systems, and formulated food products where acidity, taste profile, mineral control, and product stability are important. Britannica also notes its use as an acidic, fruitlike flavoring in food products.
Electronics and Semiconductor Materials
Electronic-grade and semiconductor-grade phosphoric acid are high-purity products designed for precision processing environments where metal contamination and trace impurities must be tightly controlled. Public semiconductor process literature shows phosphoric acid in VLSI-grade use for wet chemical etching, and specifically notes that phosphoric acid mixed with nitric acid is used in etching mixtures for aluminum and other metals in semiconductor processing and microelectronics. This makes high-purity phosphoric acid especially relevant to semiconductor fabrication, microelectronics manufacturing, and advanced electronics cleaning and etch chemistries, where consistency and ultra-low impurity levels directly affect process performance.
Phosphate Salts and Industrial Chemistry
A major industrial role of phosphoric acid is as a precursor to phosphate salts, which are used across numerous downstream applications. Britannica identifies phosphate salts derived from phosphoric acid in fertilizers, water treatment, soaps and detergents, salt and sugar conditioning, and other industrial uses. This gives phosphoric acid broad relevance across industrial processing, formulation chemistry, performance additives, and specialty phosphate manufacturing.
Water Treatment and Detergents
Phosphoric acid derivatives also play an important role in water treatment and cleaning formulations. Britannica identifies disodium hydrogen phosphate for water treatment and trisodium phosphate for soaps and detergents. This positions phosphoric acid as an important upstream material for water conditioning, precipitant chemistry, cleaning agents, and industrial treatment systems where pH control, scale management, and cleaning performance matter.
Sugar, Textile, and Other Industrial Uses
Beyond food and electronics, phosphoric acid also has established uses in sectors such as sugar processing, textiles, and other industrial manufacturing. Britannica specifically lists the sugar and textile industries among its uses. These markets reinforce the versatility of phosphoric acid as both a direct-use industrial acid and a platform chemical for downstream phosphate-based products.