Phosphoric acid is also called phospho-phosphate (molecular structure H3PO4), pure and transparent viscous liquid or oblique crystal, odorless and sour.
Eighty-five percent of the phosphoric acid is opaque or slightly light-colored, thick liquid.
Melting temperature of 42.35 ℃, specific gravity 1.70, high boiling point acid, with water in any ratio miscibility, the boiling point 213 ℃ (1/2) water lost, generate a pyrophosphate.
Into metaphosphate when heated to 300 ℃.
The relative density is 181.834.
Soluble in water, soluble in ethanol.
Phosphoric acid, a common mineral acid, is a medium strong acid.
Its acidity is weaker than that of sulfuric acid, hydrochloric acid and nitric acid, but it is stronger than acetic acid, boric acid and carbonic acid.
When the phosphate reacts with the sodium bicarbonate, it produces a different acid salt in different pH.
Can stimulate the skin to cause inflammation, destroy the body tissue.
The concentration of phosphoric acid is corrosive in China.
Moisture absorption, seal preservation.
The phosphoric acid in the market is a thick solution of the viscous thickening of H3PO4 82%, the viscosity of the phosphate solution is due to the presence of hydrogen bonds in the solution.