无臭。味咸而凉。有吸湿性。180℃时失去结晶水。1g溶于0.65ml水，缓溶于2.5ml甘油，不溶于乙醇。水溶液对石蕊呈碱性，pH约8.5。半数致死量(狗，静脉)167mg/kg。柠檬酸钾三元一水合物是柠檬酸的三钾盐。其已成为用于形成水两相体系（ATPS）的非常有前景的有机盐。UCON（温度响应聚合物）+柠檬酸钾ATPS已有研究。 Potassium citrate tribasic monohydrate is the tripotassium salt of citric acid. It has been proposed as a promising organic salt for the formation of aqueous two-phase system (ATPS). UCON (temperature-responsive polymer) + potassium citrate ATPS has been studied. Application Potassium citrate tribasic monohydrate (tribasic potassium citrate) may be added as a promoter during the preparation of activated carbon-supported CuCl2 + PdCl2 + NaOH catalyst. This catalyst was employed for the conversion of ethanol to diethyl carbonate (DEC).1 It may be used to compose the fermentation medium for Aspergillus niger 72-4. It may be used as a standard to investigate the influence of Bergenia ligulata rhizome (BLR) on CaC2O4 crystallization.