Phosphoric Acid

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Product Description

Phosphoric Acid

Phosphoric acid (orthophosphoric acid, monophosphoric acid or phosphoric(V) acid) is an inorganic compound with the chemical formula H3PO4. Phosphoric acid is a colorless solid, it is commonly encountered as an 85% aqueous solution, which is a colourless, odourless, and non-volatile syrupy liquid. It is a major industrial chemical, being a component of many fertilizers.
The name "orthophosphoric acid" can be used to distinguish this specific acid from other "phosphoric acids", such as pyrophosphoric acid. Nevertheless, the term "phosphoric acid" often means this specific compound; and that is the current IUPAC nomenclature.

Application

The dominant use of phosphoric acid is for fertilizers, consuming approximately 90% of production.

Food-grade phosphoric acid (additive E338) is used to acidify foods and beverages such as various colas and jams, providing a tangy or sour taste. The phosphoric acid also serves as a preservative. Soft drinks containing phosphoric acid, which would include Coca-Cola, are sometimes called phosphate sodas or phosphates. Phosphoric acid in soft drinks has the potential to cause dental erosion.Phosphoric acid also has the potential to contribute to the formation of kidney stones, especially in those who have had kidney stones previously.
Specific applications of phosphoric acid include:
* in anti-rust treatment by phosphate conversion coating or passivation
* to prevent iron oxidation by means of the Parkerization process
* as an external standard for phosphorus-31 nuclear magnetic resonance
* in phosphoric acid fuel cells
* in activated carbon production
* in compound semiconductor processing, to etch Indium gallium arsenide selectively with respect to indium phosphide
* in microfabrication to etch silicon nitride selectively with respect to silicon dioxide
* as a pH adjuster in cosmetics and skin-care products
* as a sanitizing agent in the dairy, food, and brewing industries

Product Parameters

Discription of goods

Phosphoric Acid 85 PCT Min food grade

Specifications

H3PO4: 85% min
H3PO3: 120ppm max
F: 10 ppm max
As: 0.5 ppm max
Heavy metal( As Pb): 5ppm max Cadium (as Cd): 3 ppm max Lead (as Pb): 3 ppm max
Chloride (as Cl): 5 ppm max Color: 20 Hazen max

Results

H3PO4: 85.6%
H3PO3: 55 ppm
F: 7 ppm
As: less than 0.5 ppm
Heavy Metal (AS Pb): 2 ppm
Cadium (as Cd): 1 ppm
Lead (as Pb): 2 ppm Chloride (as Cl): 1 ppm Color: 15 Hazen

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