Hygroscopic

A hygroscopic or hydroscopic substance is a substance that absorbs water readily from its surroundings.

Related Topics:
Absorbs - Water

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An example is biodiesel, which absorbs water to about 1200 parts per million (PPM). Other hygroscopic substances include ethanol, methanol, glycerin, concentrated sulfuric acid and concentrated sodium hydroxide.

Related Topics:
Biodiesel - Parts per million - Ethanol - Methanol - Glycerin - Sulfuric acid - Sodium hydroxide

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Those using hygroscopic materials should be advised to keep them in sealed containers, as they will absorb water from the air.

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