PHOSPHORIC ACID FOOD GRADE

HS Code : 28092010

Formula: H3PO4

Other Names: Ortho Phosphoric Acid

Description

Phosphoric acid (also known as orthophosphoric acid or phosphoric(V) acid) is a weak acid with the chemical formula H3PO4. Orthophosphoric acid refers to phosphoric acid, which is the IUPAC name for this compound. The prefix ortho- is used to distinguish the acid from related phosphoric acids, called polyphosphoric acids. Orthophosphoric acid is a non-toxic acid, which, when pure, is a solid at room temperature and pressure.

The most common source of phosphoric acid is an 85% aqueous solution; such solutions are colourless, odourless, and non-volatile. The 85% solution is a syrupy liquid, but still pourable. Although phosphoric acid does not meet the strict definition of a strong acid, the 85% solution is acidic enough to be corrosive.

Uses

Food-grade phosphoric acid (additive E338[13]) is used to acidify foods and beverages such as various colas and jams. It provides a tangy or sour taste.

In anti-rust treatment by phosphate conversion coating

In phosphoric acid fuel cells.

In activated carbon production.

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.

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