Phosphoric acid or orthophosphoric acid is a common inorganic acid. It is a medium strong acid. The chemical formula is H3PO4 and the molecular weight is 97.994. Not easy to volatilize, not easy to decompose, almost no oxidation. It has the generality of acid. It is a ternary weak acid. Its acidity is weaker than hydrochloric acid, sulfuric acid and nitric acid, but stronger than acetic acid and boric acid. It can be obtained by dissolving phosphorus pentoxide in hot water. Orthophosphoric acid is obtained by treating apatite with sulfuric acid in the industry. Phosphoric acid deliquesces easily in air. Heating will lose water to obtain pyrophosphoric acid, and then further lose water to obtain metaphosphoric acid. Phosphoric acid is mainly used in pharmaceutical, food, fertilizer and other industries, including raw materials and components of antirust agent, food additive, dental and orthopaedic surgery, EDIC corrosive agent, electrolyte, flux, dispersant, industrial corrosive agent, fertilizer and household cleaning products. It can also be used as a chemical reagent. Phosphate is the nutrition of all life forms
| TESTING ITEMS |
UNIT |
GUARANTEE VALUE |
| P2O5 |
% |
50MIN |
| MgO |
% |
≤2.5 |
| Fe2O3 |
% |
≤1.5 |
| Al2O3 |
% |
≤2.5 |
| F |
% |
0.35-1.5 |
| Cl |
% |
≤0.025 |
| SO3 |
% |
≤5 |
| Na2O |
% |
0.1-0.2 |
| CaO |
% |
0.16-0.5 |
| Solid content |
% |
≤1 |
| K2O |
% |
0.1-0.2 |
| SiO2 |
% |
≤0.12 |
Packing:1600kg/IBC
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