有潮解性。微有三甲胺样气味。易吸湿。200℃开始升华，277～278℃分解，溶于水和乙醇，微溶于氯仿，不溶于乙醚。有刺激性。 三甲胺盐酸盐是制备氯化铝-三甲胺盐酸盐离子液体的前驱体，常用于铝丝的电沉积。 也用于合成三甲胺没食子烷、三甲胺硼烷和叠氮桥联钙钛矿型金属-有机骨架 (MOF)。 Trimethylamine hydrochloride is a precursor to prepare aluminium chloride- trimethylamine hydrochloride ionic liquid, which is commonly used in electrodeposition of aluminum wires.It is also used in the synthesis of trimethylamine gallane, trimethylamine-borane and azido-bridged perovskite-type metal-organic frameworks (MOFs)