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Physical & Chemical properties

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Remarkable physical-chemical properties of L-aspartic acid:

- The melting temperature is 230 °C, decomposition starts at 235 °C.

- The boiling temperature is calculated to 348 °C.

- The relative density is 1.66 at 13 °C.

- The mass median aerodynamic diameter is 418 µm.

- The vapour pressure is 0.000035 Pa at 25 °C.

- The log of the partition coefficient for n-octanol/water is -3.89.

- The water solubility is 5.3 g/L at 25 °C. The pH of a 1 % suspension is 3.03.

- No surface activity is expected, based on the structure of the molecule.

- L-aspartic acid has acidic ionization constants of pK1: 2.10; pK2: 3.86 and pK3: 9.82.

- L-aspartic acid has no dangerous physical-chemical properties.