cellulose nitrate
polymerCellulose nitrate is a semi-synthetic polymer produced by nitrating cellulose fibers with nitric acid, creating a thermoplastic material with high rigidity and transparency. Historically significant in early plastics development, it was widely used throughout the 20th century in applications requiring clarity and moldability, though it has been largely displaced by safer alternatives due to its flammability and instability over time. Engineers may encounter it in heritage equipment restoration, archival film conservation, or specialized applications where its specific optical and mechanical characteristics remain advantageous despite its handling constraints.
film and photographic mediaheritage/antique equipment restorationarchival preservationprecision optical componentsearly-era consumer plasticsspecialized adhesives and coatings
Compliance & Regulations
?UL 94?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | — | °F | — | — |
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.