碘酸钾,化学式KIO3,常被添加在食盐(氯化钠、NaCl)中,即為含碘食盐,用于补充碘成分,预防碘缺乏病。碘酸钾溶於水、稀硫酸,不溶於乙醇。溶於水呈無色。
用过氧化氢和硝酸的混合溶液氧化碘得到碘酸,再和碳酸钾反应,得到碘酸钾。[2]
碘酸钾和亚硫酸钠在酸性溶液中可以发生氧化还原反应。[3]它在700 K(427 °C)可被金属铅还原,生成亚碘酸钾。[4]
它可以形成复盐,如K2Be(IO3)4·2H2O[5]、K2Ni(IO3)4·2H2O、K2Zn(IO3)4·2H2O[6]等。
Georgiev, M. Synthesis and thermal behavior of K2Be(IO3)4·2H2O. Godishnik na Khimikotekhnologichniya i Metalurgichen Universitet, 1998. 33: 105-113. ISSN: 1311-4190. (in Bulgarian)
Hu, Juncheng; Wan, Hongwen; Xu, Mingfei; Wang, Tianzhi; Yun, Yu; Qu, Songsheng. A thermochemical study of K2M(IO3)4·2H2O(M = Mg2+, Ni2+, Zn2+). Thermochimica Acta, 2000. 345 (2): 135-139.
- Babko, A. K.; Dubovenko, L. I.; Grigorenko, F. F. Chemiluminescence in the reaction of siloxene with different oxidizing agents(俄文). Ukrainskii Khimicheskii Zhurnal (Russian Edition), 1968. 34 (10): 1055-1059. ISSN: 0041-6045.
- Simon, Judit; Gal, Sandor; Erdey, Laszlo. Thermal reactions of potassium halates and perhalates. Acta Chimica Academiae Scientiarum Hungaricae, 1970. 66 (2): 175-181. ISSN: 0001-5407.
- M. Winkler, M. Bendull, Ch. Hellmich. Untersuchungen zur Umsetzung von Kaliumjodat mit Ammoniumsalzen in wäßriger Lösung. Zeitschrift für anorganische und allgemeine Chemie. 1972-06, 390 (3): 289–291 [2020-05-29]. ISSN 0044-2313. doi:10.1002/zaac.19723900308 (德语).
- Thomas S. Briggs, Warren C. Rauscher. An oscillating iodine clock. Journal of Chemical Education. 1973-07, 50 (7): 496 [2020-05-29]. ISSN 0021-9584. doi:10.1021/ed050p496 (英语).