Everything you need to know about Phosphoric Acid

Everything you need to know about Phosphoric Acid

16 June 2022


The chemical formula for phosphoric acid is H3PO4, and it is an inorganic substance. Phosphoric acid is a colourless, odourless, and non-volatile syrupy liquid that is often found in an 85% aqueous solution. It is a key ingredient in many fertilisers, making it an important industrial chemical. Palvi FZE is one of the excellent as well as the most promising Phosphoric Acid suppliers in Dubai providing a wide range of chemicals for industrial use. Wet and dry techniques are used to manufacture phosphoric acid in the industry.

1.Wet process:

Phosphate-containing minerals, such as fluorapatite as well as calcium hydroxyapatite, are subjected to sulfuric acid treatment in the wet process.


Ca5(PO4)3OH + 5 H2SO4 → 3 H3PO4 + 5 CaSO4 + H2O


Ca5(PO4)3F + 5 H2SO4 → 3 H3PO4 + 5 CaSO4 + HF


Phosphate gypsum (gypsum, CaSO4) is a byproduct of the process. To create hydrofluoric acid, hydrogen fluoride (HF) gas is fed into a wet scrubber. There is a wide range of P2O5 concentrations (ranging from 32–46% H3PO4) in the phosphoric acid solution in both situations. To manufacture commercial or merchant grade phosphoric acid, it is possible to concentrate it to 54–62% P2O5 (75–85% H3PO4), which is a commercial grade. Super phosphoric acid, produced by further elimination of water, has a P2O5 concentration greater than 70%. (corresponding to nearly 100% H3PO4). Arsenic compounds and other potentially harmful contaminants can be removed from the phosphoric acid produced by either procedure.

2.Dry process:

After being reduced with coke in an electric-arc furnace to produce elemental phosphorus, the phosphate ore is used to make high-quality phosphoric acid. Calcium silicate slag is formed as a result of the addition of silica. Palvi FZE - one of the leading Phosphoric Acid exporters in Dubai manufactures Phosphoric acid by dissolving high-purity phosphorus pentoxide in water, which is derived from the furnace's elemental phosphorus and then burning it.



White phosphorus and red phosphorus are two of the most common types of phosphorus. Contact with white phosphorus, a toxic waxy substance, can result in serious burns. When exposed to air, it catches fire and shines in the dark. A non-toxic amorphous material, red phosphorus is red in colour.


Incendiary devices, as well as flares, include white phosphorus. Safety matches are lit by striking them against the red phosphorus-coated surface of matchboxes.


Fertilizers are by far the most common application for phosphorus compounds. It is derived through the extraction of phosphates from phosphate ore. Ammonium phosphate is manufactured by first converting the ores to phosphoric acids.


Steelmaking necessitates the use of phosphorus. Several detergents contain phosphates, but this chemical is being phased out in some countries. As a result, high levels of phosphate in natural water supplies might encourage the growth of undesirable algae. Special glasses and delicate chinaware are made using phosphates as well. Place your order for Phosphoric Acid from the most trusted Phosphoric Acid distributor in Dubai, Palvi FZE.

Biological role:

Phosphorus is a vital component of life on Earth. The sugar-phosphate backbone of DNA and RNA is made up of this molecule. In addition to its role in energy transfer via ATP, it can be found in a slew of other biologically significant compounds. Since our bones and teeth are made up of calcium and phosphate, we consume roughly 1g of phosphate every day and store about 750g in our bodies. Algal blooms can be exacerbated by the overuse of phosphates in fertilisers and detergents, which can pollute rivers and lakes. The algae prevent further photosynthesis by blocking off the sun's rays. The oxygen dissolved in the water is quickly depleted, and the lake eventually goes dead.

Natural abundance:

Natural phosphorus can only be found in the form of a compound in minerals. Phosphate rock containing apatite minerals is a major source in the United States and other countries. There are concerns that our phosphorus supplies will run out by 2050 when the world is expected to reach "peak phosphorus."


In an industrial furnace, phosphate rock is heated with carbon and silica to produce white phosphorus. In this case, the water collects phosphorus as a vapour. White phosphorus is heated to roughly 250°C in the absence of air to produce red phosphorus.