Phosphoric acid: white/light yellow liquid , Molecular formula: H3PO4, HS code: 2809201900, CAS code: 7664-38-2 ; EINECS: 231-633-2 ; UN: 1805
Other names: orthophosphoric acid phosphoric(V) Acid
Application:
1. Food-grade phosphoric acid (additive E338) is used to acidify foods and beverages such as various colas. It provides a tangy or sour taste.
2. Phosphoric acid may be used to remove rust by direct application to rusted iron, steel tools, or other surfaces.
3. Phosphoric acid is used in dentistry and orthodontics as an etching solution, to clean and roughen the surfaces of teeth where dental appliances or fillings will be placed.
4. As an additive to stabilize acidic aqueous solutions within a wanted and specified pH range
5. As a dispersing agent in detergents and leather treatment
6. As a pH adjuster in cosmetics and skin-care products
Functions and Applications
| No | ITEMS | UNIT | SPECIFICATIONS | ANALYSIS RESULT | DETERMINATION |
| 1 | Assay as(H3PO4) (%) | % | ≥85 | 85.2 | PASS |
| 2 | Arsenic as As | % | ≤0.00005 | 0.00002 | PASS |
| 3 | FLUORIDE AS F | % | ≤0.001 | 0.0002 | PASS |
| 4 | H3PO3 | % | ≤0.012 | 0.007 | PASS |
| 5 | HEAVY METAL AS Pb | % | ≤0.0005 | 0.0003 | PASS |
| 6 | COLOR | 10 | 10 |
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