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Updated: May 3, 2025
The tendency of the magnesium precipitate to carry down molybdic acid is also increased if the solution is too concentrated. The slow addition of the reagent is essential, and the stirring not less so. Stirring promotes the separation of the precipitate and the formation of larger crystals, and may therefore be substituted for digestion in the cold.
In the second case are the Molybdates and molybdic acid; the Chromates, including red lead ore from the Siberian gold mines of Beresof; chromate of lead and copper, and crome iron from Var, in France; the Borates, including borates of magnesia, and borate of soda, or borax.
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