Phosphoric acid, or orthophosphoric acid, is a triprotic acid that is a dense liquid. This acid corrodes and irritates the human mucous membranes, skin and eyes. It is a colorless, odorless, clear liquid that releases flammable hydrogen gas when it comes in contact with metals. Pure Phosphoric acid is white solid crystals with a melting point of 42.35 ° C. This acid is boiled at 158 ​​° C and its components are separated. When phosphoric acid is less concentrated, it is colorless, odorless, and a viscous liquid with a density of 1,685 g / ml (room temperature).

 However, this density when solid is equal to 2.03 g / ml. This acid is non-toxic and unflammable. The highest common concentration of phosphoric acid in water is 85% and the lowest for sale is 50%. This acid is best stored at a temperature below 30 ° C. At temperatures below 20 degrees, this acid becomes a very cold liquid and in many cases will not freeze.

Phosphoric acid is any Chemical that is made up of a combination of the three elements i.e. phosphorus, oxygen, and hydrogen (in various proportions). The most common type of phosphoric acid is orthophosphoric acid with the chemical compound H3PO4, commonly known as simple phosphoric acid. This acid is arguably one of the most widely used acids in the food, cosmetics, pharmaceutical and especially agricultural industries.

Therefore, being familiar with its history, properties and applications in particular will be essential for technicians and enthusiasts.

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