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Physical & Chemical properties

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Physical state: Pale yellow liquid with aromatic odour.

Melting/freezing temperature: - <– 40 deg C.

Boiling temperature: 274.6 deg C.

Density: 1246.75 Kg/m3 at 20.0 deg C.

Particle size distribution: not applicable

Vapour pressure: 5.2 Pa at 25 °C (anhydride), 2.4E-5 Pa (acid)

Partition coefficient (Log Pow): 1.70 (anhydride), -4.01 (acid, at pH= 8)

Water solubility: 4260 g/L at 20 deg C and pH > 6.

Surface tension: not determined.

Flash point: 140.7°C at 101.3 kPa

Auto-ignition temperature: 440 deg C at 101.3 kPa.

Flammability: not flammable

Explosiveness: non explosive

Oxidising properties: non oxidising.

Stability in organic solvents: not critical.

Dissociation constant (acid): pKa1 = 4.42 and pKa2 = 6.93 at 20°C

Viscosities: 325.70 [mPa×s] at 20.0°C, 1.296 [mPa×s] at 40.0°C, 0.462 [mPa×s] at 60.0°C and 0.269 [mPa×s] at 80.0°C