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Description of key information

Trimethylamine N-oxide is a white solid powder with a bulk density of 1.16 g/cm³ at 22 °C and a MMAD of 414.329 µm and a D10 of 161.713 µm. It has a melting point of 100 °C and a boiling point of 158 °C at 1013 hPa.  The measured vapour pressure is 23.5 Pa at 20 °C.  Trimethylamine N-oxide is very water soluble with a measured water solubility of 793 g/L and a corresponding measured log Pow of -2.79.


Trimethylamine N-oxide is not considered as a pyrophoric solid nor a flammable solid.  Additionally, trimethylamine N-oxide is not considered to possess explosive (thermal sensitivity) or oxidizing properties.

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