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Brown hydration

Iron(III) ammonium citrate [1185-57-5] is of indefinite stoichiometry. A brown hydrated compound [1332-98-5] of iron(III) ammonium citrate contains 16.5—18.5% iron, - 9% ammonia, and 65% citric acid. A green hydrated compound [1333-00-2] contains 14.5—16% iron, 1% ammonia, and 75% citric acid. Iron ammonium citrates are water soluble but are insoluble in alcohol. The compounds are used to fortify bread, milk, and other foods (see... [Pg.434]

The ricji oxoacid chemistry of sulfur (pp. 705-21) is not paralleled by the heavier elements of the group. The redox relationships have already been summarized (p. 755). Apart from the dark-brown hydrated monoxide Po(OH)2 , which precipitates when alkali is added to a freshly prepared solution of Po(ll), only compounds in the +4 and +6 oxidation states are known. [Pg.781]

Palladium oxide is prepared by heating palladium sponge in oxygen at 350°C. The oxide is obtained as a black powder. The oxide also may be prepared specially for catalytic use by heating a mixture of palladium chloride and potassium nitrate at 600°C and then leaching out water-soluble residue. A hydrated form of the oxide, which is acid soluble can be prepared by precipitation from solution, for example, by hydrolysis of palladium nitrate. The brown hydrated oxide converts to black anhydrous oxide on heating. Its solu-bdity in acids decreases with lowering of water content. [Pg.690]

Palladium Trichloride, PdCl3, is obtained in unstable solution by dissolving the brown hydrated sesquioxide in hydrochloric acid.6... [Pg.197]

Prolonged drying (65 hours) at this temperature will yield a powdery brown hydrated product (2 % H20) which is insoluble, or only extremely slowly soluble, in donor solvents. [Pg.158]

Manganese (II) sulphate test If a bromate solution is treated with a little of a 1 1 mixture of saturated manganese(II) sulphate solution and m sulphuric acid, a transient red colouration (due to manganese(III) ions) is observed. Upon concentrating the solution rapidly, brown, hydrated manganese dioxide separates. The latter is insoluble in dilute sulphuric acid, but dissolves in a mixture of dilute sulphuric and oxalic acids (difference from chlorates and iodates, which neither give the colouration nor yield the brown precipitate). [Pg.340]

Red, anhydrous ores, Fe203. Red-brown, hydrated ores, Fe203.a H20,... [Pg.9]

O. R. XIII-3, C. Walling, and E. S. Huyser, Free Radical Additions to Olefins and Acetylenes to Form Carbon-Carbon Bonds XI11-1, G. Zweifel and H. C. Brown, Hydration of Olefins, Dienes, and Acetylenes via Hydroboration XIII-2, W. E. Parham and E. E. Schweizer, Halocyclopropanes from Halocarbenes. ... [Pg.1188]

According to E. M. Peligot, when an air-free aq. soln. of chromous chloride is treated with air-free alkali-lye in an inert atm., the brown precipitate which is formed gradually in the cold, rapidly when boiled, decomposes, hydrogen is evolved, and a reddish-brown hydrate of chromosic oxide, or chromiam tritatetraoxide,... [Pg.54]

Borane-hydrogen peroxide sodium hydroxide Alcohols from ethylene derivatives Stereospecific Brown hydration... [Pg.56]

Hydroboration (s. a. Boranes from ethylene derivatives, Brown hydration)... [Pg.329]

Tetrabutylammonium tetrahydridoborate methyl iodide-hydrogen peroxide Brown hydration s. 28, 34... [Pg.385]


See other pages where Brown hydration is mentioned: [Pg.389]    [Pg.433]    [Pg.1080]    [Pg.50]    [Pg.389]    [Pg.85]    [Pg.99]    [Pg.433]    [Pg.237]    [Pg.154]    [Pg.334]    [Pg.269]    [Pg.838]    [Pg.1960]    [Pg.85]    [Pg.106]    [Pg.271]    [Pg.127]    [Pg.1080]    [Pg.618]    [Pg.893]    [Pg.1959]    [Pg.401]    [Pg.879]    [Pg.1574]    [Pg.350]    [Pg.716]    [Pg.347]    [Pg.250]    [Pg.667]    [Pg.304]    [Pg.24]    [Pg.385]   
See also in sourсe #XX -- [ Pg.6 , Pg.16 , Pg.195 ]

See also in sourсe #XX -- [ Pg.28 , Pg.34 ]

See also in sourсe #XX -- [ Pg.6 , Pg.16 , Pg.195 ]

See also in sourсe #XX -- [ Pg.6 , Pg.16 , Pg.195 ]




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