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TK 12146 is a Brown solid block with a vapour pressure of 2.1 x 10-2Pa at 25 °C.

It is neither highly flammable nor explosive or oxidizing. The auto-flammability was determined to be 278 ± 5 °C and the flash point is 198 ± 2°C. It is of a low water solubility (9.40 x10 E-4 to 1.54 x 10E-3 g/L) and has a melting point of 21.3 to 22.2 degrees centigrade. No determination of the boiling point was possible, as the test item decomposed from approximately 94.6°C (368 K) at 101 kPa. The partition coefficient (log Pow) is greather than 5.89 x 10E5, log 10 Pow > 5.77 and the density was determined to be 1.148 x 10E3 kg/m3 at 20.0 ± 0.5 ºC.