molecular sieves and triethylamine distillation - ECHEMI
But it is more safe to use 3 or 3-4 for this purpose. 2). The yellow color is due to the trace of triethyalmine N-oxide whose formation in air, is further catalyzed by molecular sieves due to the increase of contact surface area. But if you store under nitrogen, there is no problem. 3). Molecular sieves are basic and not acidic. See the post:
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