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Phosphoric acid, also known as orthophosphoric acid, is a weak triprotic acid. At 75%, 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 | 75.0% - 75.5% |
| PubChem ID | 1004 |
| Grade | Lab Grade |
| Color | 10 max. |
| Physical form | Liquid |
| Appearance | Clear, colorless |
| Odor | Odorless |
| pH | < 0.5 at 100 g/l at 20 °C (68 °F) |
| Melting point | -17 °C (1 °F) |
| Boiling Point | ca.135 °C ca.275 °F |
| Vapor pressure | 6.5 hPa at 25 °C (77 °F), 2 hPa at 20 °C(68 °F) |
| Specific gravity | 1.574 - 1.580 |
| Density | 1.58 g/cm³ at 20 °C (68 °F) |
| Solubility | Soluble |
| Molecular formula | H3PO4 |
| Molecular weight | 97.995 |
| Autoship Available | Yes |
| Chloride (Cl) | 25 max. |
| Iron (Fe) | 10 max. |
| Sulfate (SO4) | 250 max. |
| Viscosity | 14.7 mm2/s at 25 °C (77 °F) |
