What is the purpose of Phosphorous Acid

      Phosphorous Acid is an important inorganic acid with core applications covering agriculture, industry, food, and medicine. About 80% of phosphoric acid worldwide is used in agricultural production.

1. Agriculture (primary use)

      Production of phosphate fertilizers: manufacturing superphosphate, monoammonium/diammonium phosphate, potassium dihydrogen phosphate, etc., to promote crop root development, flowering and fruiting.

      Feed additive: Producing calcium hydrogen phosphate as a calcium and phosphorus supplement for poultry and livestock.

2. Industry

Metal surface treatment:

      Rust removal/phosphating: Form a rust resistant phosphate film on the surface of steel (in the automotive and machinery industries).

      Chemical polishing: mixed with nitric acid, used for polishing metals such as aluminum and copper.

Chemical raw materials:

      Manufacturing various types of phosphates (sodium tripolyphosphate, trisodium phosphate, etc.) for use in detergents, flame retardants, and water treatment agents.

Production of lithium iron phosphate (positive electrode material for lithium batteries).

      Electronic semiconductors: high-purity phosphoric acid is used for cleaning and etching silicon wafers and aluminum film circuits.

      Other: Printing and dyeing mordants, refractory material additives, electrolytic polishing solution preparation.

3. Food industry (food grade)

      Sour agent (E338): Carbonated beverages such as cola provide a refreshing sour taste; Replace citric acid for canned food, jam, and candy.

      PH regulator: regulates acidity during beer saccharification and brewing processes, inhibits bacteria, and promotes yeast fermentation.

      Quality improver: water retaining and tenderizing meat products (ham, sausage); Instant noodles and baked goods improve taste and shelf life.

      Sugar industry: decolorization and clarification of sucrose to improve the purity of sugar products.

4. Pharmaceuticals and daily chemical products

      Medicine: manufacturing sodium glycerophosphate, iron phosphate (iron supplement), calcium phosphate (calcium tablets); Dental etching solution and buffer solution adjust the pH of the medication.

      Daily chemical: Toothpaste descaling agent, cosmetic pH regulator, mouthwash ingredients.

5. Laboratory and others

      Chemical reagents: analysis and testing, buffer preparation, organic synthesis catalysts.

      Fuel cell: Electrolyte for phosphate based hydrogen oxygen fuel cells.