The novel non-hygroscopic crystals of p-aminomethylbenzoic acid can be obtained by heating hygroscopic crystals of p-aminomethylbenzoic acid while keeping the hygroscopic crystals in contact with moisture to transform the hygroscopic crystals to non-hygroscopic crystals.
The non-hygroscopic crystals of p-aminomethylbenzoic acid can be particularly advantageously handled in the atmosphere as compared with the conventional hygroscopic crystals. Especially when the p-aminomethylbenzoic acid is used for the non-aqueous reaction, the crystals of the invention are exceptionally advantageous from the viewpoints of removal of moisture and humidity control.
对
氨甲基
苯甲酸的新型非吸湿性晶体可以通过加热吸湿性晶体来获得,同时保持吸湿性晶体与
水分接触,使吸湿性晶体转变为非吸湿性晶体。
与传统的吸湿晶体相比,对
氨甲基
苯甲酸的非吸湿晶体在大气中的处理特别有利。特别是当对
氨甲基
苯甲酸用于非
水基反应时,本发明的晶体在除湿和湿度控制方面尤为有利。