murphySodium Polyphosphate
molecular structure · PubChem
AKA: Sodium Hexametaphosphate, Chelating Agent
Synthetic
Chelating Agent
Clean
OriginProduced from phosphoric acid and sodium compounds through chemical synthesis and polymerization reactions. Created by heating and condensing sodium phosphate precursors to form long-chain polyphosphate polymers.
Polyphosphoric acids, sodium salts
CAS #
68915-31-1
Form
Powder
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Chelating
Grabs onto metal ions in water that would destabilize the formula. Keeps your product from going bad or changing color.
Anti-Inflammatory
Antimicrobial
Fights Acne
Binds metal ions
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
Mixed Skin Irritation Results
2 studies / 1 irritating / 1 not irritating / reactions slight (CIR 710)
Mixed Eye Irritation Results
1 study / 1 mixed / reactions minimal (CIR 710)
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2021
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR