Dipotassium Phosphate

AKA: 7758-11-4, Dipotassium hydrogen phosphate, Potassium phosphate dibasic, Dipotassium hydrogenphosphate, Dibasic potassium phosphate, Dibasic, Phosphoric acid, Dipotassium salt, Potassium dibasic phosphate, Dipotassium monophosphate
Synthetic
Clean
OriginDerived from phosphoric acid and potassium compounds through chemical synthesis. Produced by neutralizing phosphoric acid with potassium hydroxide or potassium carbonate.
Dipotassium hydrogenorthophosphate
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
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Anticorrosive
Buffering
Prevents Corrosion
Stabilizes pH
Antioxidant Protection
Reduces Inflammation
Locks In Moisture
Prevents product degradation
Maintains optimal pH
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
Skin Irritant in Testing
4 studies / 4 irritating / reactions minimal to mild (CIR 710)
Mixed Eye Irritation Results
1 study / 1 mixed / reactions mild (CIR 710)
Concentration Guide
Leave-on0.002–0.3%
Rinse-off0.033–1.8%
0%50%100%
CIR reported use · 2015 survey
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR
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