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
OriginPotassium phosphate is synthesized from phosphoric acid and potassium compounds through acid-base neutralization reactions. The resulting salt is produced industrially via direct reaction of these chemical precursors in controlled aqueous solutions.
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
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Buffering
Stabilizes pH
Reduces Inflammation
Wound Healing
Fights Bacteria
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.
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Mixed Skin Irritation Results
3 studies / 1 irritating / 2 not irritating / reactions slight (CIR 710)
Mixed Eye Irritation Results
2 studies / 1 irritating / 1 not irritating / reactions slight (CIR 710)
Concentration Guide
Leave-on0.0000000014–0.9%
Rinse-off0.00007–0.68%
0%50%100%
CIR reported use · 2015 survey
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR