Beryllium acetate basic

C12H18Be4013 beryllium basic acetate 1332-52-1 25.00 1.2500 1 24773 C12H22011 alpha-maltose 4482-75-1 20.00 1.5460 1... 

Basic acetate-chloroform test Upon dissolving beryllium hydroxide (reaction 1) in glacial acetic acid and evaporating to dryness with a little water, basic berryllium acetate, BeO. 3Be(CH3COO)2, is produced, which dissolves readily upon extraction with chloroform. This forms the basis of a method for separating beryllium from aluminium, since basic aluminium acetate is insoluble in chloroform. The mixed hydroxides are treated as detailed above. 

Separation. Beryllium is precipitated in Group IIIA. It is ultimately associated with aluminium in solution as tetrahydroxoaluminate and tetrahydroxoberyllate respectively. Upon diluting and boiling, only the Be(OH)2 is precipitated. Alternatively, the quinalizarin test, 7, may be applied to the solution or the basic acetate-chloroform test, 6, to the mixed hydroxides. Beryllium may also be detected in the presence of aluminium by the acetylacetone test, 9 this is specific for Be. 

A precipitate that separates here may be (basic) beryllium carbonate. It should be filtered off and tested for Be by the basic acetate-chloroform test or by the acetylacetone test (see Section VII.16, reactions 6 and 9). 

SYNS BERYLLIUM ACETATE, BASIC BERYLLIUM OXIDE ACETATE HEXAKIS( -ACETATO-0 OVn -OXOTETRABERYIXIUM HEXAKIS(H-ACETATO)-n -OXOTETRABERYLLIUM... 

Its chelate compounds include acetylacetonc and dioxalato complexes, and a basic acetate, Zn40( H3 00)g, very similar in properties to that of beryllium (p. 263), with a tetrahedral structure centred on the oxygen atom. 

Zinc forms a basic acetate, Zn40(0C0CH3)6, isomorphous with the oxoacetate of beryllium, on distillation of the normal acetate in a vacuum. This is a crystalline solid rapidly hydrolyzed by water, unlike the beryllium compound, the difference being due to the possibility of coordination numbers exceeding four for zinc. 

Basic beryllium carbonate (40 gi) is mixed with 80 ml. of glacial acetic acid and stirred, with heating, until CQ3 evolution ceases. The end of the reaction is also recognized by the start of precipitation of white, semitranslucent crystals o erwise, there is an amorphous, white residue. The solution is cooled to room temperature and the crystallized basic acetate is filtered off and dried in air. 

Tanatar (1904 3) also studied the basic acetate and concluded that its peculiar properties led to the supposition that beryllium is a tetravalent element with an atomic weight of 18.2. His belief is apparently not shared by others as the valency of... 

Separates beryllium from aluminum and iron by the solubility of its basic acetate in chloroform. 

Describes the faeparation of pure material including the sulphate, chloride, acetyl-acetonate and basic acetate. States that the supposed new element noted by Kriiss and Moraht in beryllium compounds is a mixture of zinc and iron. Gives properties of the chloride, sulphate, acetyl-acetonate and basic acetate. By the analysis of seven samples of beryllium acetyl-acetonate and nine of basic acetate, obtained the atomic weight 9.113. Results on. sulphate unsatisfactory and the method im-reliable in the opinion of the author. 

Action of Organic Acid on Beryllium Carbonate or Basic Carbonate. This method is similar in all respects to the above procedure. While it has been used most extensively for only the simpler members of the series, there is no apparent reason why it should not be equally effective for the preparation of other members as well. The procedure is one of the few claimed to give the basic formate. Directions given for the preparation of the basic acetate (synthesis 3) and basic propionate (synthesis 3) represent modifications of this general procedure. 

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