Why compressed air duster feels like it has liquid in it when you shake the bottle?

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Why compressed air duster feels like it has liquid in it when you shake the bottle?

In: Chemistry

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It feels like it has liquid in it because it has liquid in it. The liquid is a propellant that has a very low boiling point (as in, it boils at something like -20°C). The pressure in the canister keeps it a liquid even at “high” temperatures, but when you press the nozzle or pull the trigger, you allow the propellant to expand and turn into a gas.

Compressed air isn’t “air” as in the atmospheric sir your breath. It’s a compressed gas thats pressurized and liquified. Common ones are tetraflouruoethane and difluromethane.

Butane and propane are also common pressurized liquids that transform to gases. Natural gas is also sometimes liquified as a fuel.

Because it *does* have liquid in it.

When a gas is compressed, its boiling point goes up. Compress a gas enough, and its boiling point will be above room temperature, meaning that it will condense into a liquid.