Choline chloride is typically synthesized from two primary raw materials: trimethylamine (TMA) and ethylene oxide. The reaction between these two compounds produces choline chloride at varying purity levels, including the commonly used 60% and 70% choline chloride grades. Other raw materials, like hydrochloric acid and sodium tripolyphosphate, may be used in additional production steps to obtain the desired grade and form of the choline chloride product.