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
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
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.
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
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewed1 paper
⚖️Regulatory1 listing
🛡️Safety-assessed2 reviews
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR