ethylene-vinyl alcohol copolymer
polymerEthylene-vinyl alcohol (EVOH) copolymer is a semicrystalline thermoplastic formed by partial hydrolysis of ethylene-vinyl acetate, combining the processing ease of vinyl acetate with the barrier properties of vinyl alcohol units. It is widely used in food packaging, automotive fuel systems, and pharmaceutical containers where its exceptional gas barrier performance—particularly against oxygen—makes it superior to many commodity plastics, while its chemical resistance and compatibility with multilayer film structures enable demanding applications where moisture or solvent exposure is a concern.
food packaging filmsoxygen barrier layersautomotive fuel tankspharmaceutical blister packsflexible multilayer compositeschemical-resistant containers
Compliance & Regulations
?UL 94?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | — | K | — | — |
Verified Unverified Low confidence (<80%) Link to source
Regulatory Screening
Environmental
Safety & Biocompatibility
RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.