Phosphoric acid
Molecular Formula: H3PO4
Molecular weight: 97.99
Content: 75%, 81%, 85%
Properties of phosphoric acid :
It is colorless, transparent and syrupy liquid, it is odorless and tastes very sour, its melting point is 42.35 °c, it is easily soluble in water and resolves in ethanol, it may irritate human skin to cause phlogosis and destroy the issue of human body, it has got hydroscopic.
Usage of phosphoric acid :
As a acidity regulator and nutrition agent for yeast. Phosphoric acid food grade may be applied to flavors, canned food and light drinks as well as used in wine brewery as a nutrients source for yeast to prevent the reproduction of useless bacteria.
Technical grade phosphoric acid may be used to produce variety of phosphates, electrolyte treatment liquids or chemical treatment liquids, refractory mortar with phosphoric acid and inorganic coheretant. It is also used as a catalyst, drying agent and cleaner. In coating industry it is used as a rust-proof coating for metals.
Specifications of Phosphoric Acid Food Grade |
No. | Items of Analysis | Unit | National Standard GB3149-2004 |
1 | Color | Apha | ≤20 |
2 | (H3PO4) | % | ≥75.0 / 81.0 / 85.0 |
3 | Arsenic(As) | % | ≤0.00005 |
4 | Heavy metal(Pb) | % | ≤0.0005 |
5 | Fluorine(F) | % | ≤0.0010 |
6 | Oxide(H3PO3) | % | ≤0.0120 |