Cobalt, bromate perchlorate

The cobalt complex is usually formed in a hot acetate-acetic acid medium. After the formation of the cobalt colour, hydrochloric acid or nitric acid is added to decompose the complexes of most of the other heavy metals present. Iron, copper, cerium(IV), chromium(III and VI), nickel, vanadyl vanadium, and copper interfere when present in appreciable quantities. Excess of the reagent minimises the interference of iron(II) iron(III) can be removed by diethyl ether extraction from a hydrochloric acid solution. Most of the interferences can be eliminated by treatment with potassium bromate, followed by the addition of an alkali fluoride. Cobalt may also be isolated by dithizone extraction from a basic medium after copper has been removed (if necessary) from acidic solution. An alumina column may also be used to adsorb the cobalt nitroso-R-chelate anion in the presence of perchloric acid, the other elements are eluted with warm 1M nitric acid, and finally the cobalt complex with 1M sulphuric acid, and the absorbance measured at 500 nm. 

Tetra(3-aminopropanethiolato)trimercury perchlorate, 3576 Tetraamminebis(dinitrogen)osmium(II) perchlorate, 4065 Tetraamminebis(5-nitro-2//-tetrazolato)cobalt( 1 I ) perchlorate, 0966 Tetraammine-2,3-butanediimineruthenium(III) perchlorate, 1788 Tetraamminecadmium permanganate, 3950 Tetraamminecopper(II) azide, 4271 Tetraamminecopper(II) bromate, 0263b Tetraamminecopper(II) nitrate, 4270 Tetraamminecopper(II) nitrite, 4269 Tetraamminecopper(II) sulfate, 4268... 

ACTIVATED CARBON or ACTIVATED CHARCOAL (64365-11-3) Dust or powder reacts, possibly violently, with strong oxidizers, ammonium perchlorate, bromates, bromine trifluoride, chlorates, cobalt nitrate, iodates, strong acids, halogens, lead chlorite, nitrates, nitric acid, oxides, perchlorates, peroxides, peroxyformic acid, sulfates, sodium sulfite, unsaturated oils. Forms heat- and impact-sensitive materials with ammonium perchlorate. Incompatible with many compounds, including triethylenediamine, palladium, potassium dioxide, potassium peroxide, silver nitrate, sodium chlorite. 

ESTANO (Spanish) (7440-31-5) Finely divided material is combustible and forms explosive mixture with air. Contact with moisture in air forms tin dioxide. Violent reaction with strong acids, strong oxidizers, ammonium perchlorate, ammonium nitrate, bis-o-azido benzoyl peroxide, bromates, bromine, bromine pentafluoride, bromine trifluoride, bromine azide, cadmium, carbon tetrachloride, chlorine, chlorine monofluoride, chlorine nitrate, chlorine pentafluoride, chlorites, copper(II) nitrate, fluorine, hydriodic acid, dimethylarsinic acid, ni-trosyl fluoride, oxygen difluoride, perchlorates, perchloroethylene, potassium dioxide, phosphorus pentoxide, sulfur, sulfur dichloride. Reacts with alkalis, forming flammable hydrogen gas. Incompatible with arsenic compounds, azochloramide, benzene diazonium-4-sulfonate, benzyl chloride, chloric acid, cobalt chloride, copper oxide, 3,3 -dichloro-4,4 -diamin-odiphenylmethane, hexafluorobenzene, hydrazinium nitrate, glicidol, iodine heptafluoride, iodine monochloride, iodine pentafluoride, lead monoxide, mercuric oxide, nitryl fluoride, peroxyformic acid, phosphorus, phosphorus trichloride, tellurium, turpentine, sodium acetylide, sodium peroxide, titanium dioxide. Contact with acetaldehyde may cause polymerization. May form explosive compounds with hexachloroethane, pentachloroethane, picric acid, potassium iodate, potassium peroxide, 2,4,6-trinitrobenzene-1,3,5-triol. 

Give the chemical formula for each of the following ionic compounds (a) sodium phosphate, (b) zinc nitrate, (c) barium bromate, (d) iron(II) perchlorate, (e) cobalt(II) hydrogen carbonate, (f) chromium(III) acetate, (g) potassium dichromate. 

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