Monopotassium phosphate is a soluble salt used as an additive in cigarettes, fertilizer and as a fungicide and buffering agent in vaccines. The synthesized, active, end-use product is a crystalline powder containing 100% active ingredient. The chemical abstract service (CAS) number for monopotassium phosphate is 7778-77-0.

Dust may cause irritation of eyes, respiratory tract or skin.

The FDA has considered the various routes of exposure; dietary, drinking water, and exposure from non-occupational sources,” (but not injection directly into the human body — emphasis ours). Little or no information is available about injection of this substance directly into the human body. Adverse effects after injection, both short-term and long-term, are unknown.

“The Agency, on its own initiative, proposed to establish an exemption from the requirement of a tolerance for residues of potassium dihydrogen phosphate in or on all food commodities when used as a fungicide to control powdery mildew in fruits and vegetables. This proposed rule was published on March 3, 1998 with a 60-day comment period (63FR10352). The final rule was published on August 12, 1998. Safety factors from the Food Quality Protection Act of 1996 (FQPA) were considered.”

“EPA waived the acute inhalation study, dermal sensitization study (guinea pig), mutagenicity, cellular immune response, and developmental toxicity data.”

potassium dihydrogen phosphate, KDP, or monobasic potassium phosphate, MKP, Phosphoric acid, monopotassium salt, Dipotassium dihydrogenphosphate; Potassium dihydrogenorthophosphate, Potassium dihydrogen phosphate, Potassium Phosphate Monobasic, Kaliumdihydrogenorthophosphat; Dihidrogenoortofosfato de potasio (Spanish); Dihydrogénoorthophosphate de potassium (French).