Red prussiate of potash

Rot-kali, n. red prussiate of potash (potassium ferricyanide). -kiefer,/. red pine, -klee, m. red clover, -kohl, m. red cabbage, -kohle, /. red charcoal, -kupfer, -kupfererz, n. red copper, red copper ore (cuprite), -lauf, m. erysipelas. 

Synonyms potassium hexacyanoferrate(III) tripotassium hexakis(cyano-C)ferrate(3-) red prussiate of potash... 

Prussian blue, in the form of printers inks, artists colors, and paints, soon flooded the market. It also stimulated interest in other potentially useful substances that might be derived from the potash, iron, and animal-residue mixtures. One of these, known as red prussiate of potash, did turn out to be very useful. When combined with ferric ions, it didn t produce a dramatic color until it was exposed to direct sunlight. Then it turned blue. Prussian blue. The discovery revolutionized archi-... 

Potassium ferricyanide, K3[Fe(CN)6], known commercially as red prussiate of potash, was discovered by Gmelm in 1822, and is obtained by the chlorination of potassium ferrocyanide —6... 

II) The metal cross is fastened upright in a 1-L beaker. A saturated aqueous solution of red prussiate of potash Kj[Fe(CN)J is poured in until the beaker is almost full and the cross completely covered. The solution is prepared by heating a suspension of 500 g of the salt in 1 L of water it is filtered while hot and poured into the beaker. During a few hours red crystals separate from the yellowish solution and cover the cross (see figure). 

Perrideyauido of potassium (red prussiate of potash, produces a rich deep blue precipitate, insoluble in muriatic acid. In higmy dilute solutions the efiect is only a deep blu-iah-grocu coloration. 

Fcrridcyanide of potassium (red prussiate of potash) deepens the color, but does not give a blue precipitate, as it does with the protoxide, ( c ivo. 4152.)... 

RED PRUSSIATE of POTASH (13746-66-2) Mixtures with water, acids, alcohols cause slow decomposition, producing hydrocyanic acid. Explosive reaction with ammonia. Violent reaction with copper(II) nitrate, trihydrate. Incompatible with chromium trioxide, sodium nitrite. 

Potassium Ferricyanide, K3Fe(CN)e, red prussiate of potash, crystallizes in anhydrous blood-red prisms. It is prepared by the action of an oxidizing agent on potassium ferrocyanide. Chlorine is usually used. The gas is passed into the solution of the ferrocyanide until oxidation is complete. This is shown by testing the solution with ferric chloride, when, if any ferrocyanide is present, Prussian blue will be formed. Ferric chloride and potassium ferricyanide produce a brown color. The equation for the oxidation is —... 

Red prussiate of potash Tripotassium hexacyanoferrate Tripotassium hexakis (cyano-C) ferrate (3-)... 

Red precipitate. See Mercury oxide (ic), red Red prussiate of potash. See Potassium ferricyanide... 

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