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Physical & Chemical properties

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Physical state: colourless liquid having the odour characteristic of aromatic compounds

Melting point: – 61.5 °C

Boiling range/point: 295.5 °C at 1013 hPa

Density: 1.15082 g/cm3 at 20°C

Vapour pressure: 0.23 Pa at 25°C

Partition coefficient (Log Pow): 2.09 (anhydride), -3.95 (dissociated acid, at environmental conditions)

Water solubility (acid): 8.4 g/L at 20 deg C

Flash point: 159.75°C

Self ignition temperature: 430 °C

Flammability: not flammable

Explosivity: not explosive

Oxidising properties: not oxidising

Dissociation constant (acid): pKa1 = 4.24 and pKa2 = 6.61 at 20°C 

Viscosity: 101.370 [mPa s] at 20.0°C; 27.204 [mPa s] at 40.0°C; 10.690 [mPa s] at 60.0°C and 6.929 [mPa s] at 80.0°C.