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Phosphoric Acid (H3PO4) — Properties, Uses & Safety

🏭 Industrial Chemicals

Overview

Used to acidify foods (cola drinks), make fertilizers, and remove rust; the world's third most important industrial acid.

IUPAC Name
phosphoric acid
CAS Number
7664-38-2
PubChem CID
1004
Molecular Formula
H3PO4
Molar Mass
97.994 g/mol
State at STP
liquid
Appearance
Colorless viscous liquid or white solid

Safety Information

GHS Hazard Codes

H290H314

GHS Pictograms

corrosion

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