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Calcium Nitrate: Chalk Dissolved in Nitric Acid
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Ondřej Mangl (Wikimedia Commons) · Public domain
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Calcium Nitrate: Chalk Dissolved in Nitric Acid

Calcium nitrate, the lime nitrate or Norwegian saltpetre, is made by dissolving limestone in nitric acid. It is a very common coagulant in latex dipping: a former dipped in its solution first sets the latex on its surface. The salt pulls water from the air, so keep it closed. The picture: calcium nitrate on a watch glass.
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Nitric Acid (Aquafortis) from Saltpetre and Oil of Vitriol, Ure 1839
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Nitric Acid (Aquafortis) from Saltpetre and Oil of Vitriol, Ure 1839

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Making Chalk White Pigment (Whiting) — Grinding and Levigating Natural Chalk

Making Chalk White Pigment (Whiting) — Grinding and Levigating Natural Chalk

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