Product name Phosphoric acid
Alias orthophosphoric acid; Anhydrous phosphoric acid
CAS RN 7664-38-2
EINECS No. 231-633-2
Molecular formula H3PO4
Molecular weight 97.99
Hazard label

Risk Phrase R34;
Safety Phrase S26; S45;
Physical & chemical properties
Appearance and properties: Colorless transparent or light-colored viscous liquid, pure phosphoric acid is colorless crystal, odorless, has a sour taste.
Melting point(℃): 42.35 (pure product)
Boiling point(℃): 261
Relative density 1.70
Relative density(water=1): 1.87 (pure product)
Relative vapor density (air = 1): 3.38
Saturated vapor pressure (kPa): 0.67 (25℃, pure product)
Solubility: Miscible with water and ethanol.
Use Mainly used in phosphate industry, electroplating, polishing industry, sugar industry, compound fertilizer, etc. Used as acidulant and yeast nutrition in food industry.