Dipotassium Phosphate
AKA “Dipotassium hydrogen phosphate, Potassium phosphate dibasic, Dipotassium hydrogenphosphate, Dibasic potassium phosphate, Potassium phosphate, dibasic, Phosphoric acid, dipotassium salt
Synthetic
Ingredient Facts
Dipotassium phosphate
AKA: Dipotassium hydrogen phosphate, Potassium phosphate dibasic, Dipotassium hydrogenphosphate, Dibasic potassium phosphate, Dibasic, Phosphoric acid, Dipotassium salt
Synthetic · Anticorrosive · EWG: 4
Synthetic
Synthetic
Clean
Helps stabilize and balance the formula's pH so the product works effectively and stays fresh longer.
Solubility Freely soluble in water. Insoluble in ethanol
Formula
HK2O4P
Mol. Weight
174.18
CAS #
7758-11-4
Form
Powder
State
Pellets or Large Crystals; Liquid, Other Solid; Dry Powder; Liquid
See origin →
Functions
Anticorrosive
Buffering
Prevents Corrosion
Stabilizes pH
Antioxidant Protection
Reduces Inflammation
Locks In Moisture
Prevents product degradation
Maintains optimal pH
Traditional Use
A mineral salt developed for use in cosmetics as a pH buffer and chelating agent in the mid-20th century. Also used historically in food preservation and industrial applications.
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
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR