Phosphoric acid (also known as orthophosphoric acid or phosphoric(V) acid) is a mineral (inorganic) and weak acid having the chemical formula H3PO4. Orthophosphoric acid refers to phosphoric acid, which is the IUPAC name for this compound.
Phosphoric acid is the most important oxygen acid of phosphorus.It serves as an acidic, fruitlike flavouring in food products.
Pure phosphoric acid is a crystalline solid (melting point 42.35° C, or 108.2° F); in less concentrated form it is a colourless syrupy liquid. The crude acid is prepared from phosphate rock, while acid of higher purity is made from white phosphorus.
Food-grade phosphoric acid (additive E338) is used to acidify foods and beverages such as various colas and jams. It provides a tangy or sour taste.
Application of phosphoric acid :-
1.It is also used in dental cements in the preparation of albumin derivatives
2.It is used in the sugar and textile industries.
3.It is also used to make phosphate salts for fertilizers
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