Density of Common Phosphates
The density of phosphates can vary depending on the specific compound. In general, the density of solid phosphate salts tends to be relatively high, typically in the range of 2.0 to 4.0 g/cm3.
The following table provides a curated list of density values for various phosphates at 1 atmospheric (atm) pressure. (1 atm = 101,325 Pa)
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| Temperature | ||
|---|---|---|
| Ammonium dihydrogen phosphate (H6NO4P) | 25 | 1.800 |
| Calcium dihydrogen phosphate (CaH4P2O8) | 18 | 2.220 |
| Calcium hydrogen phosphate (CaHPO4) | 25 | 2.920 |
| Calcium phosphate (Ca3(PO4)2) | 25 | 3.140 |
| Sodium dihydrogen phosphate (NaH2PO4) | 25 | 2.360 |
| Sodium hydrogen phosphate (Na2HPO4) | 25 | 1.700 |
| Trisodium phosphate (Na3PO4) | 17 | 2.540 |
| Potassium dihydrogen phosphate (KH2PO4) | 25 | 2.340 |
| Potassium phosphate (K3PO4) | 25 | 2.564 |
| Iron(III) phosphate (FePO4) | 25 | 2.870 |
| Aluminum phosphate (AlPO4) | 25 | 2.560 |
| Magnesium phosphate (Mg3(PO4)2) | 25 | 2.195 |
| Zinc phosphate (Zn3(PO4)2) | 25 | 4.000 |
| Lead(II) phosphate (Pb3(PO4)2) | 25 | 7.010 |
| Bismuth(III) phosphate (BiPO4) | 25 | 6.320 |
Related Tables
References: 1) Cardarelli, François. Materials Handbook: A Concise Desktop Reference. Switzerland: Springer International Publishing, 2018. 2) CRC Handbook of Chemistry and Physics, 97th Edition. United Kingdom: CRC Press, 2016-2017. 3) Yaws, Carl L. The Yaws Handbook of Physical Properties for Hydrocarbons and Chemicals. Netherlands: Elsevier Science, 2015. 4) Occupational Safety and Health Administration (OSHA): The National Institute for Occupational Safety and Health (NIOSH).