Are amines soluble in petroleum ether?

Are butylamine and dibutylamine soluble in petroleum ether? my lab results show that when butylamine is added to petroleum ether, it floats but dissolve after a while. why is it so? and why doesnt dibutylamine dissolve in petroleum ether?

Answer:
The larger the organic chain of the amine, the readily it will dissolve.

Dibutyl amine is probably not dissolving due to trace amounts of moisture present.

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