Technical orthophosphoric acid 

Phosphoric (phosphoric) acid is an inorganic compound with the chemical formula H3PO4. It is highly soluble in water, ethanol and other solvents. Refers to medium-strength tribasic acids. In an aqueous solution, the substance dissociates.

Phosphoric acid is supplied as a colorless syrupy liquid with no noticeable odor.

Food grade phosphoric acid is approved for use in all countries. It is safe at the correct dosage. It is appreciated for its low cost, pronounced antioxidant properties, and a characteristic pungent-sour taste. For use in the food industry, phosphoric acid is supplied in the form of a 73–85% aqueous solution.

When working with a concentrated composition, precautions must be taken, as phosphoric acid can cause a chemical burn. Inhalation of aerosol, ingestion of the substance inside the body in undiluted form is inadmissible.

Food additive E338 is used in the manufacture of many products:

sugary drinks, including carbonated ones;
marmalades and other sweets;
fillers for baking, jams;
in processed cheeses;
sausages.
Phosphoric acid is used to clarify beet sugar. It is also used to normalize yeast activity when making bread dough. The E338 additive provides a normal alcohol yield from the raw material, therefore it is indispensable at the stage of molasses and wort preparation.

Food grade orthophosphoric acid functions as an acidity regulator (it is cheaper than natural analogues; when sweetened, the solution tastes like gooseberry juice), as well as an antioxidant. In the case of dough and molasses, the substance is responsible for saturating the medium with phosphorus, which is necessary for the effective functioning of the yeast.

In liquid form, food grade phosphoric acid is usually packed in plastic cans with a capacity of up to 35 liters. If we are talking about industrial volumes, it is poured into steel tanks or other containers at the request of the consumer.

Raw materials can be transported by any means of transport, observing the relevant safety rules. The additive is stored in closed containers in covered rooms. The shelf life of raw materials is 12 months.