Phosphoric Acid

It is widely used in dentistry and orthodontics as an etching solution, dental appliances and fillings. Food-grade phosphoric acid is used to acidify foods and beverages such as various colas and jams. Due to its non-toxic properties, phosphoric acid is used by a variety of industries in multiple applications. Also used as a sanitising agent in the dairy, food, and brewing industries. Another wide range of uses as a pH adjuster in cosmetics and skin-care products.


Molar Weight97.994g/mol
Melting Point40–42.4 °C
Boiling Point212 °C
Density1.684 g/cc
FormsLiquid, Viscous, White

Uses and Applications

Key applications

  • Food packaging
  • Food and Nutrition
  • Cleaning products
  • Pulp and paper
  • Solvents
  • Personal care
  • Cosmetic products
  • Agricultural (non-pesticide)
  • Bleaching agent
  • Electronics
  • Paint and Coatings


  • Pharma
  • Oil & Gas
  • Cleaning
  • Coatings & Construction
  • Polymers
  • Cosmetics
  • Water Treatment
  • Food
  • Animal Nutrition
  • Agrobusiness
  • Lubricants
  • Rubber

Synonyms: Orthophosphoric acid, Phos acid

Chemical Formula: H3PO4

CAS Number: 7664-38-2