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Not to be confused with Sodium bicarbonate. Potassium bicarbonate (also known as potassium hydrogen carbonate or potassium acid carbonate) is a colorless, odorless, slightly basic, salty substance.According to the U.S. Food and Drug Administration (FDA), potassium bicarbonate is  generally recognized as safe .There is no evidence of human carcinogenicity, no adverse effects of overexposure, and an undetermined LD50. It is among the food additives encoded by European Union, identified by the initials E 501.ccording to the U.S. Food and Drug Administration (FDA), potassium bicarbonate is  generally recognized as safe . There is no evidence of human carcinogenicity, no adverse effects of overexposure, and an undetermined LD50. It is among the food additives encoded by European Union, identified by the initials E 501.
Potassium lactate is also a potassium salt, but it not commonly used as a nutritional supplement. Chemical Composition According to the United States Food and Drug Administration, potassium lactate is a white odorless solid that attracts water from the air. Its molecular formula is C3H5KO3 and its molecular weight is 128.17. It is prepared by using a chemical called potassium hydroxide to neutralize lactic acid.