Pentapotassium Triphosphate
molecular structure · PubChem
AKA: 13845-36-8, Triphosphoric acid, Potassium salt (1:5), Pentapotassium salt, Potassium triphosphate (K5P3O10)
Synthetic
Chelating Agent
Not Clean
The CIR Expert Panel concluded that the following 31 ingredients are safe in the present practices of use and concentration in cosmetics as described in this safety assessment, when formulated to be non-irritating...Pentapotassium Triphosphate...
Solubility Very soluble in water
Formula
K5O10P3
Mol. Weight
448.41
CAS #
13845-36-8
Form
Powder
State
Other Solid
Functions
Buffering
Chelating
Grabs onto metal ions in water that would destabilize the formula. Keeps your product from going bad or changing color.
Fights Acne
Maintains optimal pH
Binds metal ions
Traditional Use
A synthetic buffering and chelating agent developed for cosmetic formulations. Used in modern skincare to stabilize pH and preserve product integrity, with no traditional use history.
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