Potassium Metaphosphate
molecular structure · PubChem
AKA: 7790-53-6, Metaphosphoric acid potassium salt, Potassium oxophosphinate, Monopotassium metaphosphate, Potassium metaphosphate (kpo3), CHEBI:148438
Synthetic
Cleanser
Not Clean
Potassium salt of metaphosphoric acid
Solubility 1 g dissolves in 100 ml of a 1 in 25 solution of sodium acetate
Formula
KO3P
Mol. Weight
118.07
CAS #
7790-53-6
Form
Powder
State
Fine white powder or crystals or colourless glassy platelets
Functions
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Cleansing Surfactant
Removes Impurities
Traditional Use
Synthetic compound developed in the 20th century primarily used in cosmetics as a chelating agent and water softener to improve formula stability and performance.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR