Hydrochloric Acid

Freezing point

247.3 K (-25.86 °C)

Boiling point at 101.3 kPa

335.5 K (62.31 °C)

Liquid from

6.3 kPa

Critical point

431.3 K (158.2 °C) · 1,000 kPa

The curve connects the lowest point at which the substance can be liquid with the critical point. Above the critical temperature there is no liquid.

• Venus: Miasma · 28.9 % of the atmosphere