Magnesium ferrocyanide

Potassium magnesium ferrocyanide, K2MgFe(CN)6, is obtained in the anhydrous condition by mixing cold concentrated solutions of potassium ferrocyanide and magnesium chloride.3 After a short time a white micro-crystalline precipitate is formed, which is not affected by heating to 120° C. When moist the salt soon becomes cream-coloured, owing to slight decomposition, possibly under the influence of atmospheric carbon dioxide. 

Other anticaking ingredients include ferric ammonium citrate, silicon dioxide, sodium ferrocyanide, magnesium silicate, magnesium carbonate, propylene glycol, aluminum calcium silicate, sodium aluminosilicate (also called sodium silicoaluminate), and calcium phosphate. 

Uses Of the Stassfurt salts.—The magnesium compounds in the Stassfurt salts are used for the preparation of magnesium and of its salts. The potash salts are an essential constituent of many fertilizers used in agriculture, etc. 22 and potassium chloride is the starting-point for the manufacture of the many different kinds of potassium salts used in commerce—carbonate, hydroxide, nitrate, chlorate, chromate, alum, ferrocyanide, cyanide, iodide, bromide, etc. Chlorine and bromine are extracted by electrolysis and other processes from the mother liquids obtained in the purification of the potash salts. Boric acid and borax are prepared from boracite. Caesium and rubidium are recovered from the crude carnallite and sylvite. 

Anticaking agents commonly used include calcium carbonate, phosphate, silicate, and stearate cellulose (microcrystalline) kaolin magnesium carbonate, hydroxide, oxide, silicate, and stearate myristates palmitates phosphates silica (silicon dioxide) sodium ferrocyanide sodium silicoa-lummale and starches. 

P-galactosidase substrate PBS containing 3 mM potassium ferricyanide, 3 mM potassium ferrocyanide, and 1 mM magnesium chloride, which can be stored at +4°C for approx 2 mo. 0.5 mg/mL 5-bromo-4-chloro-3-indolyl-p-galactopyranoside (X-gal) should be added prior to use. X-gal is made up to 40 mg/mL in dimethyl formamide (DMF) and stored at -20°C in a polypropylene or glass container. 

Calcium and Magnesium Salt Other than Evaporated Salt with Only Anticaking Agents Such as Sodium Ferrocyanide Not more than 0.9% Evaporated Salt with Only Anticaking Agents Such as Sodium Ferrocyanide Not more than 0.35%. Heavy Metals (as Pb) Not more than 2 mg/kg. 

Magnesium ammonium ferrocyanide, Mg(NH4)2Fe(CN)6, is obtained3 by mixing concentrated solutions of magnesium chloride and ammonium ferrocyanide in equivalent proportions. The anhydrous salt separates out as small white crystals which remain unaltered at 120° C. A saturated solution of the salt contains 2 48 grams per litre. 

The heptahydrate, 2K2MgFe(CN)6.7H20, is prepared by mixing dilute solutions of potassium ferrocyanide and magnesium chloride at the boiling-point. 

K4C6H6FeN603 potassium ferrocyanide trihydrate 14459-95-1 25.00 1.8500 1 2418 MgH1209S2 magnesium thiosulfate hexahydrate 13446-30-5 25.00 1.8200 1... 

The carbonates, sulphates, and borates are decomposed. The sulphides of the alkalies and alkaline earths are decomposed while the sulphides of arsenic, antimony, molybdenum, zinc, cadmium, tin, iron, lead, copper, mercury, and palladium are not attacked. Cobalt sulphate is not attacked, while the sulphates of the alkalies and alkaline earths are attacked and dissolved. Alkali tungstates, ammonium arsenite and arsenate, copper arsenite, ammonium magnesium arsenate, ammonium molybdate and vanadate, potassium cyanide and ferrocyanide are decomposed. Paraffin is not attacked shellac, gum arabic, gum tragacanth, copal, etc., are decomposed. Celluloid is slowly attacked. Silk paper, gun cotton, gelatin, parchment are dissolved. M. Meslans 22 has studied the esterification of alcohol by hydrofluoric acid. 

Stain solution 5 mM potassium ferricyanide, 5 mM potassium ferrocyanide, 2 mM magnesium chloride in PBS ... 

Hydroxyethyl cellulose has good tolerance for dissolved electrolytes, although it may be salted out of solution when mixed with certain salt solutions. For example, the following salt solutions will precipitate a 10% w/v solution of Cellosize WP-09 and a 2% w/v solution of Cellosize WP-4400 sodium carbonate 50% and saturated solutions of aluminum sulfate ammonium sulfate chromic sulfate disodium phosphate magnesium sulfate potassium ferrocyanide sodium sulfate sodium sulfite sodium thiosulfate and zinc sulfate. 

Natrosol is soluble in most 10% salt solutions, excluding sodium carbonate and sodium sulfate, and many 50% salt solutions with the exception of the following aluminum sulfate ammonium sulfate diammonium phosphate disodium phosphate ferric chloride magnesium sulfate potassium ferrocyanide sodium metaborate sodium nitrate sodium sulfite trisodium phosphate and zinc sulfate. Natrosol 150 is generally more tolerant of dissolved salts than is Natrosol 250. 

The direct method of potentionietric titration has been applied to various precipitation reactions, among which may be mentioned the determination of magnesium in dolomite 23 the precipitation of zinc with ferrocyanide 24 and the titration of chloride, bromide and thiocyanate 25 with mercurous perchlorate 20... 

MAGNESIUM NITRATE or MAGNESIUM(H) NITRATE (10377-60-3) A powerful oxidizer. Reacts violently with dimethylfoimamide, reducing agents, combustible materials, fuels, organic substances, metal powders, potassium hexanitrocobalite(III) (C.I. pigment yellow), sodium acetyUde, and easily oxidizable matter. Incompatible with aluminum, ammonium hexacyanoferrate(II), ferf-butylhydroperoxide, citric acid, ethanol, ferrocyanides, hydrazinium perchlorate, isopropyl chlorocarbonate, metal phosphinates, nitrosyl perchlorate, organic azides, phosphorus, sodium thiosulfate, sulfamic acid, thiocyanates, tin(II) fluoride, and many other substances. 

Magnesium silicate Magnesium stearate Magnesium trisilicate D-Mannitol Microcrystalline cellulose Polydimethylsiloxane Potassium acid tartrate Potassium caprate Potassium caprylate Potassium ferrocyanide Potassium laurate Potassium myristate Potassium oleate Potassium palmitate Potassium silicate... 

Incorporation of iron cyanides into LDH material requires a certain degree of precaution as well (84). LDH materials containing magnesium, when exposed to a ferrocyanide solution for an extended period of time, form the cubic material +MgFe(CN)6, where or NILj, by altering the LDH composition... 

White silver cyanide, thiocyanate, ferro- and yellow ferricyanide are decomposed with production of ignition-resistant silver. All metal ferro- and ferricyanides of the base metals leave a residue of ferric oxide and the particular metal oxide. For instance, the colorless ferrocyanides of zinc, cadmium, magnesium, calcium, barium, strontium, thorium etc. become yellow-brown Prussian blue and Turnbull s blue become dark (Fe304) and, later, brown (FegOg). Cupric ferricyanide (brown) and cupric ferrocyanide (violet-brown) are blackened when ignited because of the formation of cupric oxide. 

---