Potassium Ethyl Ester of PVM/MA Copolymer

AKA: Potassium Ethylparaben, Ethylparaben potassium, ETHYL P-HYDROXYBENZOATE POTASSIUM SALT, P-HYDROXYBENZOIC ACID ETHYL ESTER POTASSIUM SALT, BENZOIC ACID, POTASSIUM SALT (1:1)
Synthetic
Chelating Agent
Not Clean
OriginDerived from polyvinyl methyl ether and maleic anhydride copolymer, a synthetic polymer chemical family. Synthesized through copolymerization of vinyl methyl ether with maleic anhydride, then esterified and potassium-neutralized.
Potassium salt of ethyl ester of PVM/MA copolymer
Formula
C9H9KO3
Mol. Weight
204.26
CAS #
36457-19-9
Form
Liquid
State
Liquid
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.
Removes Metal Ions
Binds metal ions
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed0 reviews
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Restricted By
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR