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单词 prussian alkali
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Prussian alkali
Prussian alkali n. Chemistry Obsolete potassium ferrocyanide, K4Fe(CN)6·3H2O.
ΚΠ
1772 J. C. Lettsom Naturalist's & Traveller's Compan. vi. 34 Zinc is precipitated in a white powder by the Prussian alkali.
1794 R. Kirwan Elements Mineral. (ed. 2) I. 487 Prussian, or Pruissiated alkali, formerly called the phlogisticated alkali, is an alkali united to a particular tinging substance by the intermediation of iron, calcined.
1825 ‘J. Nicholson’ Operative Mechanic 757 A determinate quantity of the Prussian alkali must be tried previously.
extracted from Prussiann.adj.
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