-
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. The ACS monogram for phosphoric acid signifies high purity.
-
- Fertilizer
- Acidifying agent in skin-care/cosmetic products
- Acidifying agent in foods/beverages
- Sanitizing agent in food industry
- Dental cleaning
- Rust converter
-
Product Information
| CAS | 7664-38-2 |
|---|---|
| Assay | 85.0% min. |
| PubChem ID | 1004 |
| Grade | ACS Grade |
| Color | Max 10 |
| 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) |
| Boiling Point | ca.158 °C ca.316 °F at 1,013 hPa |
| Vapor pressure | 2 hPa at 20 °C (68 °F) |
| Density | 1.71 g/cm³ at 20 °C (68 °F) |
| Solubility | Miscible |
| Molecular formula | H3PO4 |
| Molecular weight | 97.995 |
| Arsenic (As) | 1 ppm Max. |
| Autoship Available | Yes |
| Calcium (Ca) | 0.002% Max |
| Chloride (Cl) | 3 ppm Max. |
| Heavy metals | 0.001% Max. |
| Insoluble matter | 0.001% Max. |
| Iron (Fe) | 0.003% Max |
| Magnesium (Mg) | 0.002% Max |
| Nitrate (NO3) | 5 ppm Max. |
| Reducing Substances | Passes Test |
| Sodium (Na) | 0.025% Max. |
| Sulfate (SO4) | 0.003% Max |
| Viscosity | 30.5 mm2/s at 20 °C (68 °F) |
