Potassium hexacyanoferrate , hydrogen

Y. Mishima, J. Motonaka, K. Maruyama, and S. Ikeda, Determination of hydrogen peroxide using a potassium hexacyanoferrate(III) modified titanium dioxide electrode. Anal. Chim. Acta 358, 291-296... 

Some luminol derivatives have been developed as CL labeling reagents. Analytes prelabeled with luminol derivatives are separated by HPLC, mixed with postcolumn reagents such as hydrogen peroxide and an alkaline solution of potassium hexacyanoferrate (III), and then detected by a CL detector. Highly sensitive determination is possible by optimizing the conditions to increase the CL reaction efficiency for each analyte. 

The structures of luminol derivatives used for HPLC-CL detection are shown in Figure 7A. Analytes labeled with luminol derivatives can be detected using hydrogen peroxide and potassium hexacyanoferrate(III) under alkaline conditions after HPLC separation (Table 1). For example, ibuprofen in saliva [34], saturated... 

Poly(vinylferrocenium perchlorate). Hydroperoxide biosensor, 688 POM (polyoxometaUates), 429-30, 1057 POP (persistent organic pollutants), 747 Poppyseed oil, vibrational spectra, 692 Porphyrin, O NMR spectroscopy, 185 Potassium carbonate, alcohol oxidation, 492 Potassium hexacyanoferrate(II), hydrogen peroxide biosensor, 653 Potassium hydrogen phthalate hemiperhydrate, 98-100... 

Ammonia solution Disodium hydrogen phosphate Potassium hexacyanoferrate (II)... 

Potassium hexacyanoferrate(III) andiron(III) chloride To a nearly neutral solution of iron(III) chloride add some potassium hexacyanoferrate(III) solution. A yellow solution is obtained. To this, add a nearly neutral solution of hydrogen peroxide. The solution turns to green and Prussian blue separates slowly. 

NIOSH REL (Chromium(VI)) TWA 0.025 mg(Cr(VI))/mh CL 0.05/15M SAFETY PROFILE Confirmed human carcinogen. Poison by subcutaneous route. Mutation data reported. A powerful oxidizer. A powerful irritant of skin, eyes, and mucous membranes. Can cause a dermatitis, bronchoasthma, chrome holes, damage to the eyes. Dangerously reactive. Incompatible with acetic acid, acetic anhydride, tetrahydronaphthalene, acetone, alcohols, alkali metals, ammonia, arsenic, bromine penta fluoride, butyric acid, n,n-dimethylformamide, hydrogen sulfide, peroxyformic acid, phosphorus, potassium hexacyanoferrate, pyridine, selenium. 

A powerful oxidizer. Explosive reaction with acetaldehyde, acetic acid + heat, acetic anhydride + heat, benzaldehyde, benzene, benzylthylaniUne, butyraldehyde, 1,3-dimethylhexahydropyrimidone, diethyl ether, ethylacetate, isopropylacetate, methyl dioxane, pelargonic acid, pentyl acetate, phosphoms + heat, propionaldehyde, and other organic materials or solvents. Forms a friction- and heat-sensitive explosive mixture with potassium hexacyanoferrate. Ignites on contact with alcohols, acetic anhydride + tetrahydronaphthalene, acetone, butanol, chromium(II) sulfide, cyclohexanol, dimethyl formamide, ethanol, ethylene glycol, methanol, 2-propanol, pyridine. Violent reaction with acetic anhydride + 3-methylphenol (above 75°C), acetylene, bromine pentafluoride, glycerol, hexamethylphosphoramide, peroxyformic acid, selenium, sodium amide. Incandescent reaction with alkali metals (e.g., sodium, potassium), ammonia, arsenic, butyric acid (above 100°C), chlorine trifluoride, hydrogen sulfide + heat, sodium + heat, and sulfur. Incompatible with N,N-dimethylformamide. 

Mild oxidation of 3-substituted quinoxalin-2-ones, formed by reaction of quinoxalin-2(l//)-ones and Grignard reagents, with potassium hexacyanoferrate(III) or hydrogen peroxide gives aromatic systems. ... 

Other primary standards for sodium thiosulfate are potassium dichromate, potassium bromate, potassium hydrogen iodate, potassium hexacyanoferrate(III), and metallic copper. All these compounds liberate stoichiometric amounts of iodine when treated with excess potassium iodide. 

Potassimn ethyl xanthate , see Potassimn O-ethyl dithiocarbonate Potassium ethynediolate, see Potassimn acety lene-1,2-dioxide, 0990 Potassimn ferricyanide , see Potassium hexacyanoferrate(lll), 2063 Potassimn ferrocyanide , see Potassimn hexacyanoferrate(ll), 2064 Potassium fluoride hydrogen peroxidate, 4300... 

The most important reaction of dihydropyrimidines is their oxidation to the corresponding pyrimidines (via dehydrogenation, hydrogen transfer, or disproportionation). However, although many such oxidations have been carried out, they were aimed at enabling identification of dihydropyrimidines from the pyrimidine formed, rather than a study of the kinetics and mechanism of the oxidation reactions themselves. Thus besides spontaneous oxidation in air, l,4(l,6)-dihydropyrimidines were oxidized by KMn04,152 15S 156,171-173 DMSO,147-151153 or potassium hexacyanoferrate(III)187 1,2-dihydropyrimidines were oxidized by KMn04,175 176 178 183 184 DMSO,163 or 2,3-dichloro-5,6-dicyanobenzo-quinone (DDQ).199... 

Substituted 3,4-dihydropyrido[2,3-t/]pyrimidines, available by addition of the corresponding Grignard reagent or hydrogen cyanide to pyrido[2,3- /]pyrimidine (see Section 7.2.2.1.1.5.), are oxidized by potassium hexacyanoferrate(III) (K3(i e(CN)6]) in alkaline solution to give the aromatic heterocycles.295... 

V -(2-Aminophenyl)hydrazides are cyclized to 5 and oxidized to 1,2,4-benzotriazines 6 when treated with hydrochloric acid and sodium 3-nitrobenzenesulfonate.5,147 Similarly, A -(2-nitro-phenyl)hydrazides give 1,2-dihydro-l, 2,4-benzotriazines 5 when the nitro group is reduced with sodium amalgam in ethanol. In most cases, the initially formed dihydro compounds are not isolated, but are oxidized by potassium hexacyanoferrate(III) to the aromatic 1,2,4-benzotriazines 6.148 Reduction of the nitrohydrazones or the tautomeric azo compounds with zinc, catalytic hydrogenation,332 or elcctrochemically246 affords 1,2,4-benzotriazines 6.148 Electrochemical reduction of A"-(2-nitrophenyl)hydrazides yields 3-substituted 1,2,4-benzotriazines 6.140... 

Concentrated hydrochloric acid adding concentrated hydrochloric acid to a saturated solution of potassium hexacyanoferrate(III) in cold, a brown precipitate of free hydrogen hexacyanoferrate(III) (hexacyanoferric acid) is obtained ... 

Potassium Acetate Potassium Acid Sulfate Potassium Acid Tartrate Potassium Antimonate Potassium Bicarbonate Potassium Bichromate Potassium Bisulfate Potassium Bisulfite Potassium Bitartrate Potassium Borate Potassium Bromate Potassium Bromide Potassium Carbonate Potassium Chlorate Potassium Chloride Potassium Chromate Potassium Cyanide Potassium Dichromate Potassium Ferricyanide Potassium Ferrocyanide Potassium Fluoride Potassium Hexacyanoferrate (III) Potassium Hydrogen Carbonate Potassium Hydrogen Sulfate Potassium Hydrogen Sulfite Potassium Hydroxide Potassium Hypochlorite Potassium Hyposulfite Potassium lodate Potassium Iodide Potassium Manganate Potassium Nitrate Potassium Perborate Potassium Perchlorate Potassium Permanganate Potassium Peroxydisulfate Potassium Persulfate... 

Copper(II) ions in aqueous solution are readily obtained from any copper-containing material. The reactions with (a) alkali (p. 430), (b) concentrated ammonia (p 413) and (c) hydrogen sulphide (p. 413) provide satisfactory tests for aqueous copper(II) ions. A further test is to add a hexacyanoferrate(II) (usually as the potassium salt) when a chocolate-brown precipitate of copper(II) hexacyanoferrate(II) is obtained ... 

Lead(II) azide Lead chromate Lead dioxide Calcium stearate, copper, zinc, brass, carbon disulfide Iron hexacyanoferrate(4-) Aluminum carbide, hydrogen peroxide, hydrogen sulfide, hydroxylamine, ni-troalkanes, nitrogen compounds, nonmetal halides, peroxoformic acid, phosphorus, phosphorus trichloride, potassium, sulfur, sulfur dioxide, sulfides,... 

The hexacyanoferrate(II) ion being a complex ion does not give the typical reactions of iron(II) (cf. Sections 1.31 to 1.33). The iron present in such solutions may be detected by decomposing the complex ion by boiling the solution with concentrated sulphuric acid in a fume cupboard with good ventilation, when carbon monoxide gas is formed (together with hydrogen cyanide, if potassium cyanide is present in excess) ... 

Hydrochloric acid If a concentrated solution of potassium hexacyano-ferrate(II) is mixed with 1 1 hydrochloric acid, hydrogen hexacyanoferrate(II) is formed, which can be extracted by ether ... 

Tripotassium hexacyanoferrate Tripotassium hexakis (cyano-C) ferrate (3-). See Potassium ferricyanide Tripotassium hydrogen ethylenediaminetetraacetate. See Tripotassium EDTA Tripotassium 2-hydroxypropane-1,2,3-tricarboxylate. See Potassium citrate Tripotassium orthophosphate Tripotassium phosphate. See Potassium phosphate tribasic... 

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