Density of Common Amino Acids
The density of amino acids varies depending on their specific molecular structures and compositions. Generally, the densities of amino acids range from about 1.3 to 1.6 g/cm3.
The following table provides a comprehensive list of density values for common amino acids under 1 atmospheric (atm) pressure. (1 atm = 101,325 Pa)
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| Temperature | ||
|---|---|---|
| Alanine (Ala) (C3H7NO2) | 22 | 1.430 |
| Arginine (Arg) (C6H14N4O2) | 25 | 1.230 |
| Asparagine (Asn) (C4H8N2O3) | 15 | 1.543 |
| Aspartic Acid (Asp) (C4H7NO4) | 20 | 1.700 |
| Cysteine (Cys) (C3H7NO2S) | 25 | 1.180 |
| Glutamic Acid (Glu) (C5H9NO4) | 20 | 1.538 |
| Glutamine (Gln) (C5H10N2O3) | 20 | 1.364 |
| Glycine (Gly) (C2H5NO2) | 20 | 1.161 |
| Histidine (His) (C6H9N3O2) | 25 | 1.309 |
| Isoleucine (Ile) (C6H13NO2) | 24 | 1.293 |
| Leucine (Leu) (C6H13NO2) | 18 | 1.293 |
| Lysine (Lys) (C6H14N2O2) | 25 | 1.136 |
| Methionine (Met) (C5H11NO2S) | 20 | 1.178 |
| Phenylalanine (Phe) (C9H11NO2) | 25 | 1.160 |
| Proline (Pro) (C5H9NO2) | 25 | 1.180 |
| Serine (Ser) (C3H7NO3) | 22 | 1.600 |
| Threonine (Thr) (C4H9NO3) | 25 | 1.313 |
| Tryptophan (Trp) (C11H12N2O2) | 25 | 1.175 |
| Tyrosine (Tyr) (C9H11NO3) | 25 | 1.237 |
| Valine (Val) (C5H11NO2) | 25 | 1.230 |
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).