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Phosphoric acid, also known as orthophosphoric acid, is a weak triprotic acid. At 85%, it is a colorless and odorless viscous liquid. The most common usage is in fertilizers, accounting for more than 75% of its use. It is also a useful pH modifier, sanitizing agent, and rust converter.
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- Fertilizer
- Acidifying agent in skin-care/cosmetic products
- Acidifying agent in foods/beverages
- Sanitizing agent in food industry
- Dental cleaning
- Rust converter
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Product Information
| CAS | 7664-38-2 |
|---|---|
| Synonyms | o-Phosphoric acid, Phosphorsaeure, Polyphosphoric acid, Acidum phosphoricum, Superphosphoric acid, White phosphoric acid |
| Assay | 85.0% - 85.5% |
| PubChem ID | 1004 |
| Grade | Lab Grade |
| Color | 10 max |
| Physical form | Liquid |
| Appearance | Colorless |
| Odor | Odorless |
| pH | < 0.5 at 100 g/l at 20 °C (68 °F) |
| Melting point | ca.21 °C (ca.70 °F) |
| Vapor pressure | 2 hPa at 20 °C (68 °F) |
| Specific gravity | 1.686 - 1.692 |
| Density | 1.71 g/cm³ at 20 °C (68 °F) |
| Solubility | Miscible |
| Molecular formula | H3PO4 |
| Molecular weight | 97.995 |
| Autoship Available | Yes |
| Chloride (Cl) | 25 max. |
| Iron (Fe) | 10 max. |
| Sulfate (SO4) | 250 max. |
| Viscosity | 30.5 mm2/s at 20 °C (68 °F) |
