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A 'foaming agent' is a material that will decompose to release a gas under certain conditions (typically high temperature), which can be used to turn a liquid into a foam.
For example, powdered titanium hydride is used as a foaming agent in the production of metal foams, as it decomposes to form titanium and hydrogen gas at elevated temperatures. Zirconium(II) hydride is used for the same purpose.

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See also

See also

★ Anti-foaming agent

★ Carrageenan