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Phosphoric Acid: Properties, Industrial Applications, and Global Supply Chains
Phosphoric acid, known scientifically as orthophosphoric acid ($H_3PO_4$), is one of the most versatile and essential inorganic minerals in the modern industrial world. From the carbonated beverages we consume to the high-tech fertilizers that sustain global food production and the metal treatments that prevent rust, phosphoric acid is a cornerstone of global chemistry.
At ChemicalsSuppliers.com, we specialize in bridging the gap between high-grade chemical manufacturers and the industries that rely on them. This comprehensive guide explores everything you need to know about phosphoric acid, its chemical derivatives, and how to source them effectively.
Phosphoric acid is a mineral acid composed of phosphorus, oxygen, and hydrogen. At room temperature, pure phosphoric acid is a crystalline solid, but it is most commonly sold as an 85% aqueous solution—a colorless, odorless, and syrupy liquid.
Understanding the nomenclature is crucial for procurement and regulatory compliance:
The utility of phosphoric acid is categorized primarily by its purity grades: Food Grade, Technical Grade, and Fertilizer Grade (often referred to as ‘Wet Process’ acid).
Over 80% of global phosphoric acid production is dedicated to the fertilizer industry. It is the primary feedstock for Diammonium Phosphate (DAP) and Monoammonium Phosphate (MAP). These compounds provide essential phosphorus to crops, promoting root development and energy transfer through ATP (Adenosine Triphosphate).
As a food additive (E338), it is used to acidify colas and various processed foods. It provides a sharp, tangy flavor and prevents the growth of mold and bacteria. It also acts as a buffering agent in dairy products to maintain pH levels.
Phosphoric acid is a critical component in “pickling” solutions. It reacts with iron oxide (rust) to convert iron(III) oxide into iron(III) phosphate, which can be easily wiped away or which provides a protective coating that inhibits further corrosion. This makes it essential for the automotive and aerospace manufacturing sectors.
It is used in water softening and to prevent lead or copper from leaching out of pipes into the drinking water supply by creating a protective phosphate film on the interior surfaces of the plumbing.
The global phosphoric acid market is highly sensitive to the cost of Phosphate Rock. Countries like Morocco, China, the United States, and Russia control the vast majority of extracted reserves. As industries move toward sustainable chemistry, the demand for “Green Phosphorus”—recovered from wastewater treatment plants—is rising.
At ChemicalsSuppliers.com, we provide a massive catalog of industrial chemicals. Below is a list of related compounds frequently purchased alongside phosphoric acid.
Prices are indicative and subject to global market volatility. Please visit our website for real-time quotes.
| Chemical Name | Common Use | Typical Price (USD/kg) |
|---|---|---|
| Sulfuric Acid | Catalyst, Battery Acid | $0.40 – $0.80 |
| Nitric Acid | Fertilizer, Explosives | $0.50 – $0.90 |
| Hydrochloric Acid | PH adjustment, Pickling | $0.30 – $0.70 |
| Sodium Tripolyphosphate | Detergents, Food | $1.20 – $2.00 |
| Potassium Phosphate | Food Additive, Fertilizer | $2.50 – $4.00 |
| Diammonium Phosphate | Fertilizer | $0.60 – $1.10 |
| Monoammonium Phosphate | Fire Retardants | $0.70 – $1.20 |
| Calcium Phosphate | Food Supplement | $1.50 – $2.50 |
| Phosphorous Pentoxide | Drying Agent | $3.00 – $5.00 |
| Citric Acid | Acidulant, Chelating | $1.00 – $1.80 |
| Acetic Acid | Solvent, Food | $0.80 – $1.50 |
| Formic Acid | Leather processing | $1.10 – $1.90 |
| Sodium Hydroxide | Industrial cleaning | $0.50 – $1.00 |
| Hydrogen Peroxide | Bleaching, Oxidizer | $0.60 – $1.20 |
| Ammonium Nitrate | Fertilizer | $0.40 – $0.90 |
| Urea | Nitrogen source | $0.35 – $0.80 |
| Potassium Chloride | Fertilizer | $0.40 – $0.90 |
| Zinc Phosphate | Anti-corrosion | $4.00 – $7.00 |
| Aluminum Phosphate | Ceramic binder | $3.50 – $6.00 |
| Magnesium Phosphate | Pharmaceutical | $5.00 – $9.00 |
| Sodium Hexametaphosphate | Water treatment | $1.80 – $3.00 |
| Boric Acid | Fungicide, Antiseptic | $2.00 – $3.50 |
| Oxalic Acid | Cleaning, Bleaching | $1.50 – $2.50 |
| Tartaric Acid | Food stabilizer | $4.00 – $6.50 |
| Lactic Acid | Food, Cosmetics | $2.00 – $3.50 |
| Benzoic Acid | Preservative | $2.50 – $4.00 |
| Malic Acid | Flavor enhancer | $2.50 – $4.50 |
| Ascorbic Acid (Vitamin C) | Antioxidant | $8.00 – $15.00 |
| Sodium Bicarbonate | Leavening agent | $0.40 – $0.90 |
| Calcium Carbonate | Filler, Pigment | $0.20 – $0.50 |
| Ferric Chloride | Wastewater treatment | $0.60 – $1.20 |
| Aluminum Sulfate | Coagulant | $0.30 – $0.70 |
| Copper Sulfate | Algaecide | $2.00 – $4.00 |
| Nickel Sulfate | Electroplating | $8.00 – $14.00 |
| Sodium Sulfate | Paper manufacturing | $0.30 – $0.60 |
| Potassium Sulfate | Fertilizer | $0.80 – $1.50 |
| Ammonium Sulfate | Fertilizer | $0.25 – $0.60 |
| Sodium Carbonate | Glass making | $0.30 – $0.70 |
| Glycerin | Cosmetics, Food | $1.50 – $2.50 |
| Propylene Glycol | Solvent, Coolant | $1.80 – $3.00 |
| Ethanol | Solvent, Fuel | $1.20 – $2.00 |
| Isopropyl Alcohol | Disinfectant | $1.50 – $2.50 |
| Acetone | Solvent | $1.30 – $2.20 |
| Toluene | Solvent | $1.00 – $1.70 |
| Xylene | Solvent | $1.10 – $1.80 |
| Methanol | Chemical feedstock | $0.50 – $1.00 |
| Phenol | Resin production | $1.50 – $2.50 |
| Formaldehyde | Disinfectant, Resins | $0.90 – $1.60 |
| Phthalic Anhydride | Plasticizers | $1.40 – $2.40 |
| Maleic Anhydride | Resin, Coatings | $1.30 – $2.30 |
(Note: To purchase any of these, please visit our Contact/Order Page.)
Phosphoric acid is corrosive. Handling requires specialized Personal Protective Equipment (PPE), including acid-resistant gloves, goggles, and face shields. In case of spills, it must be neutralized with lime or sodium bicarbonate before disposal to prevent soil and water acidification.
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Phosphoric acid remains an irreplaceable component of the global industrial infrastructure. Whether you are improving agricultural yields, purifying water, or manufacturing high-performance metal components, sourcing high-quality phosphoric acid is essential to your success.
At ChemicalsSuppliers.com, we are committed to providing not just the chemicals you need, but the expertise to support your operations. Visit our website today to get a quote, download SDS (Safety Data Sheets), or speak with our technical sales team about your bulk requirements.
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