Ortho-Phosphoric Acid, also known as phosphoric acid, is a colorless, odorless liquid with the chemical formula H₃PO₄. It is a weak acid commonly used in fertilizers, food flavoring, and cleaning products. Its ability to act as a pH adjuster makes it valuable in various industrial applications. In addition to its industrial uses, ortho-phosphoric acid plays a role in the production of phosphate compounds, which are essential for plant growth. It is also utilized in the dental field for etching enamel before applying dental sealants or composite resins.