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Physical & Chemical properties

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Remarkable physical-chemical properties of maleic acid:

- The melting temperature is 132.5 °C.

- The boiling temperature is 157.8 °C at 99.7 kPa.

- The relative density is 1.59 at 20 °C.

- The median particle size L50 is 356 µm

- The vapour pressure is 9.03 E-4 Pa at 20 °C and 1.78 E-3 at 25 °C.

- The partition coefficient log Pow between n-octanol and water is -1.3 (pH = 2.5)

- The water solubility is 478.8 g/L at 20.0 °C.

- The surface tension of the test substance was not determined because no surface activity is expected in that molecule

- Maleic acid has no dangerous physical-chemical properties.