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Potassium Phosphate
AKA “Potassium dihydrogen phosphate, Potassium phosphate monobasic, MONOPOTASSIUM PHOSPHATE, Monobasic potassium phosphate, Potassium acid phosphate, Phosphoric acid, monopotassium salt, Potassium phosphate”
Synthetic
Ingredient Facts
Potassium phosphate
AKA: Potassium dihydrogen phosphate, Potassium phosphate monobasic, MONOPOTASSIUM PHOSPHATE, Monobasic potassium phosphate, Potassium acid phosphate, Phosphoric acid, Monopotassium salt
Synthetic · Buffering · EWG: 4
Synthetic
Synthetic
Clean
Potassium Phosphate helps maintain the product's pH balance, keeping the formula stable and gentle on skin.
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
pH Adjuster
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
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR