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🧪 Supercritical Fluids: Beyond the Critical Point

Interactive 3D pressure-temperature phase diagram where you push a substance past its critical point and watch the liquid-gas meniscus vanish into a supercritical fluid.

Chemistry & Materials3DModerate60 FPS💧 Water

A sealed vessel of CO₂, water or ethane sits on a lab stand; heat it toward its critical temperature along the liquid-vapour coexistence curve and watch the meniscus thin, shimmer with critical opalescence, and vanish into a single supercritical phase.

🔬 What It Demonstrates

Liquid and vapour densities converge toward a common critical density as temperature rises, following a density-gap that shrinks like (1 − T/Tc)^0.5 and hits zero exactly at the critical point — the same physics behind supercritical CO₂ extraction.

🎮 How to Use

Pick a substance, drag the temperature slider (or hit Auto-heat), and adjust the fill amount to see the classic three-tube behaviour: only a critically-filled vessel keeps its meniscus alive all the way to Tc.

💡 Did You Know?

Supercritical CO₂ runs at a mild 31°C and 74 bar, making it the solvent of choice for decaffeinating coffee and extracting essential oils without leaving any residue behind.

⚙ Under the hood

Interactive 3D pressure-temperature phase diagram where users push a substance past its critical point and watch the liquid-gas boundary vanish into a supercritical fluid state in a simulated vessel.

supercritical-fluidscritical-pointphase-diagramchemistrythermodynamicsco2-extraction

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install