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Ethyl 3-Ethoxypropionate

  • Esters
  • CAS 763-69-9
  • IUPAC: Ethyl 3-ethoxypropanoate

Ethyl 3-Ethoxypropionate (CAS 763-69-9) appears in 1 of the 1,812 car-care products CarCareTruth tracks (as of June 2026). It is classified as a VOC.

Low acute toxicity. Not GHS-classified for health effects at concentrations used in consumer coatings. Not Prop 65–listed. Not an asthmagen. Slow-evaporating co-solvent; vapor concentration during application of tube-applied putty is low.

Ethyl 3-ethoxypropionate (EEP) is a slow-evaporating ester co-solvent used in paints and coatings to improve flow and leveling. Its slower evaporation rate relative to faster solvents like acetone helps reduce surface defects during film formation. At 0.5–1.5% in a polyester putty formulation, its contribution to VOC is minor. The compound is biodegradable, not classified as aquatically toxic, and has no significant health concerns at the concentrations found in consumer coatings.

Health & environment profile

VOC
yes
Prop 65 listed
no
Asthmagen
no
EPA Safer Choice
no
Aquatic toxicity
no
Biodegradable
yes
Bioaccumulative
no
Persistent
no
Ozone depleting
no
Microplastic
no
PFAS
no
Env. score
3/5
Purpose: Co-solvent in paints and coatings; slow-evaporating ester that improves flow and leveling

Common questions about Ethyl 3-Ethoxypropionate

What is Ethyl 3-Ethoxypropionate used for in car care?
Co-solvent in paints and coatings; slow-evaporating ester that improves flow and leveling
Is Ethyl 3-Ethoxypropionate a VOC?
Yes. Ethyl 3-Ethoxypropionate is classified as a volatile organic compound (VOC).
Is Ethyl 3-Ethoxypropionate on California's Proposition 65 list?
No. Ethyl 3-Ethoxypropionate is not on California's Proposition 65 list.
Is Ethyl 3-Ethoxypropionate biodegradable?
Yes. Ethyl 3-Ethoxypropionate has a confirmed biodegradable profile.

1 product contain this

Related

Health and environment notes translate the manufacturer Safety Data Sheet, the GHS classification, and authoritative regulatory listings (California Prop 65, EPA). Not medical advice. They describe the ingredient itself; whether a hazard applies to a finished product depends on its concentration and how it's used.