cyclic olefin copolymer

polymer

Cyclic olefin copolymer (COC) is a thermoplastic polymer synthesized from cyclic olefin monomers and ethylene, offering exceptional optical clarity combined with low moisture absorption and high dimensional stability. It is widely used in precision optics, diagnostics, and packaging where transparency, chemical resistance, and minimal outgassing are critical; engineers select COC over standard polystyrene or polycarbonate when superior clarity is needed without the brittleness concerns, or over acrylic when chemical durability and lower water uptake are priorities.

medical diagnostic devices and microfluidicsprecision optics and lensespharmaceutical and food packaginglaboratory and analytical instrumentationoptical films and coatingsmicroplate and cuvette applications

Compliance & Regulations

?UL 94?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions	Source
Glass Transition Temperature(Tg)	392.7	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.

cyclic olefin copolymer

Thermal Properties

Regulatory Screening

Environmental

Safety & Biocompatibility