Potassium Phosphate
AKA “Potassium dihydrogen phosphate, 7778-77-0, Potassium phosphate monobasic, MONOPOTASSIUM PHOSPHATE, Monobasic potassium phosphate, Potassium acid phosphate, Phosphoric acid, monopotassium salt, Potassium phosphate, monobasic, Monopotassium monophosphate, Potassium dihydrogen orthophosphate
Ingredient
Ingredient Facts
Potassium phosphate
AKA: Potassium dihydrogen phosphate, 7778-77-0, Potassium phosphate monobasic, MONOPOTASSIUM PHOSPHATE, Monobasic potassium phosphate, Potassium acid phosphate, Phosphoric acid, Monopotassium salt, Monobasic, Monopotassium monophosphate, Potassium dihydrogen orthophosphate
Ingredient · Buffering · EWG: 1
Synthetic
Clean
Potassium dihydrogenorthophosphate
Solubility Freely soluble in water. Insoluble in ethanol
Formula
H2KO4P
Mol. Weight
136.09
CAS #
7778-77-0, 16068-46-5
Form
Powder
State
Liquid; Dry Powder; Other Solid; NKRA; Pellets or Large Crystals
See origin →
Functions
Buffering
Stabilizes pH
Reduces Inflammation
Wound Healing
Fights Bacteria
Traditional Use
A mineral salt used since the 19th century as a buffer and pH regulator. Traditionally derived from bone ash and later synthesized for use in cosmetics to maintain stable formulation pH.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR