Aluminium sulfate, basic

Johansson, G.. 1960. On the Crystal Structure of a Basic Aluminium Sulfate and the Corresponding Selenate. Acta Chemica Scandinavica, 14(3) 769. 

Jtdiansson, G., 1963. On the Crystal Structure of the Basic Aluminium Sulfate i3Al2O3.6SO3.xH2O. ArkivforKentt,20 32l. 

Lactose octakis(hydrogen sulfate) basic aluminium salt, L-4... 

Patton (1973i) equates lake white with light alumina hydrate. This latter term refers to a basic aluminium sulfate prepared as a precipitate from solutions of aluminium sulfate and sodium... 

Singh, S.S. and Brydon, J.E. (1969) Solubility of basic aluminium sulfates at equilibrium in solution and in the presence of montmorillonite. Soil ScL, 107, 12—16. Sipos, P., Capewell, S.G., May, P.M., Hefter, G.T, Laurenczy, G., Lukacs, F., and Roulet, R. (1997) tI-NMR and UV-Vis spectroscopic determination of the formation constants of aqueous thallium(l) hydroxo-complexes. J. Solution Chem., 26, 419-431. Srinivasan, K. and Rechnitz, G.A. (1968) Reaction rate measurements with fluoride ion-selective membrane electrode. Formation kinetics of ferrous fluoride and aluminium fluoride complexes. Anal. Chem., 40, 1818-1825. 

Basic aluminium ammonium sulfate [81], (NH4)20.3Al203.4S03.xH20 (x = 6 to 8), loses water at about 473 K. Deammination and complete dehydration commences above 673 K, and SO, evolution starts at about 873 K to yield residual AI2O3 which retains traces of SO3. ar-time data fitted the contracting volume equation. 

Oxides of the type RjO arc formed by all rare earth elements, by the ignition of the hydroxide, nitrate, sulfate, carbonate, or oxalate. In general the basicity decreases with increase of atomic weight, though yttrium and scandium are exceptions to the rule. The basicity of lanthanum approaches that of the alkaline earths, while scandium is about as basic as aluminium. 

Although chromates, dichromates, molybdates, nitrate, nitrite and sulfate were foimd to be the effective inhibitor for the corrosion processes taking place at the electrode/electrolyte interface of aluminium and some of its alloys in acidic and basic solutions (El-Sobki et al., 1981 Kassab et al., 1987 Badawy et al., 1999), unluckily a major disadvantage is their toxicity and such as their use has come under severe criticism (Bethencourt et al., 1997 Song-mei et al, 2007). 

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