Phosphoric acid (orthophosphoric acid, monophosphoric acid) is a colorless, odorless phosphorus-containing solid, and inorganic compound with the chemical formula H3PO4
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.
Applications:
in anti-rust treatment by phosphate conversion coating, iron oxidation prevention by Parkerization process, in phosphoric acid fuel cells
in activated carbon production, pH adjuster in cosmetics and skin-care
Industries:
Household chemicals, Fertilizers, Adhesives, oils, greases, Horticulture, Food industry, Feed industry
Properties:
CAS number 7664-38-2
WE number 231-633-2
Chemical formula H3PO4
Molar mass 97,995 g/mol
Customs tariff code 28092000
ADR UN1805
pH <1
Melting / freezing point – 17°C
Boiling point 135°C
Relative density 1,5788 g/cm3 @15°C
Solubility in water >1000 g/l @20°C