Calcium nitrate

Rarity: Uncommon

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Notion

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Science and technology

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What Wikipedia says

Calcium nitrate is an inorganic compound with the formula Ca(NO3)2. It forms hydrates Ca(NO3)2·xH2O. The anhydrous compound, which is rarely encountered, absorbs moisture from the air to give the tetrahydrate. Both anhydrous and hydrated forms are colourless salts.

Excerpt from the Wikipedia article “Calcium nitrate”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Ondřej Mangl, Public domain, via Wikimedia Commons.