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  2. Sodium ferrocyanide - Wikipedia

    en.wikipedia.org/wiki/Sodium_ferrocyanide

    Sodium ferrocyanide is produced industrially from hydrogen cyanide, ferrous chloride, and calcium hydroxide, the combination of which affords Ca 2 [Fe(CN) 6]·11H 2 O.A solution of this salt is then treated with sodium salts to precipitate the mixed calcium-sodium salt CaNa 2 [Fe(CN) 6] 2, which in turn is treated with sodium carbonate to give the tetrasodium salt.

  3. Potassium ferrocyanide - Wikipedia

    en.wikipedia.org/wiki/Potassium_ferrocyanide

    Potassium hexacyanidoferrate(II) finds many niche applications in industry. It and the related sodium salt are widely used as anticaking agents for both road salt and table salt. The potassium and sodium hexacyanidoferrates(II) are also used in the purification of tin and the separation of copper from molybdenum ores.

  4. Ferrocyanide - Wikipedia

    en.wikipedia.org/wiki/Ferrocyanide

    Ferrocyanide is the name of the anion [Fe 6] 4−. Salts of this coordination complex give yellow solutions. It is usually available as the salt potassium ferrocyanide, which has the formula K 4 Fe(CN) 6. [Fe(CN) 6] 4− is a diamagnetic species, featuring low-spin iron(II) center in an octahedral ligand environment.

  5. Prussian blue - Wikipedia

    en.wikipedia.org/wiki/Ferric_ferrocyanide

    The iron in this material is all ferrous, hence the absence of deep color associated with the mixed valency. Oxidation of this white solid with hydrogen peroxide or sodium chlorate produces ferricyanide and affords Prussian blue. [23] A "soluble" form, KFe 3+ [Fe 2+ (CN) 6], which is really colloidal, can be made from potassium ferrocyanide and ...

  6. Cyanide - Wikipedia

    en.wikipedia.org/wiki/Cyanide

    Because of the high stability of their complexation with iron, ferrocyanides (Sodium ferrocyanide E535, Potassium ferrocyanide E536, and Calcium ferrocyanide E538 [45]) do not decompose to lethal levels in the human body and are used in the food industry as, e.g., an anticaking agent in table salt.

  7. Potassium ferricyanide - Wikipedia

    en.wikipedia.org/wiki/Potassium_ferricyanide

    Potassium ferricyanide when milled has lighter color. Potassium ferricyanide is the chemical compound with the formula K 3 [Fe(CN) 6].This bright red salt contains the octahedrally coordinated [Fe(CN) 6] 3− ion. [2]

  8. Anticaking agent - Wikipedia

    en.wikipedia.org/wiki/Anticaking_agent

    In Europe, sodium ferrocyanide (535) and potassium ferrocyanide (536) are more common anticaking agents in table salt. "Natural" anticaking agents used in more expensive table salt include calcium carbonate and the magnesium carbonate .

  9. Mercury(II) cyanide - Wikipedia

    en.wikipedia.org/wiki/Mercury(II)_cyanide

    [2] [8] [7] In addition, it can be produced by treating mercuric sulfate with potassium ferrocyanide in water: [8] K 4 Fe(CN) 6 + 3 HgSO 4 → 3 Hg(CN) 2 + 2 K 2 SO 4 + FeSO 4. Another method to generate mercuric cyanide is through the disproportionation of mercury(I) derivatives. In these reactions, metallic mercury precipitates, and Hg(CN) 2 ...