murphyPEG-500
molecular structure · PubChem
AKA: Polyethylene Glycol 500, Macrogol 500
Synthetic
Emulsifier
Solvent
Not Clean
OriginPEG-500 is derived from petroleum-based ethylene oxide, a synthetic organic compound from the petrochemical industry. It is synthesized through polymerization of ethylene oxide monomers followed by condensation reactions.
Poly(oxy-1,2-ethanediyl), .alpha.-hydro-.omega.-hydroxy- (500 mol EO average molar ratio)
CAS #
25322-68-3
Form
Liquid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Binding
Emulsion Stabilising
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Solvent
Dissolves other ingredients so they distribute evenly in the formula. Often the invisible "base" everything else is mixed into.
Holds Formula Together
Stabilizes Emulsion
Dissolves Ingredients
Holds ingredients together
Keeps product blended
Dissolves other ingredients
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
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR