Aluminium oxalate 94, Table

The formation constants and associated stoichiometries have been reported for a number of different aluminium oxalic acid complexes (Sjoberg and Ohman, 1985), and these are shown in Table 5.1. From the stoichiometric coefficients the reaction for the formation of A1L2 can be deduced and expressed more fully as... 

Table 3 shows the close agreement of experimental and theoretical mass losses for the reaction mechanisms chosen. In some cases the atmosphere used makes no difference to the final product. In other cases the use of nitrogen changes the product from oxide to metal or higher oxide to lower oxide. In some cases the percentage of water is rather indefinite. This is probably because some salt hydrates tend to lose water to the atmosphere, or the reverse and take up water as a higher hydrate or on the surface. Thus the true formula of the hydrate may not be exactly what is given on the sample bottle. Aluminium oxalate is anomalous. It... 

The above table shows that the starch alone does not change in viscosity. Sodium carbonate and potassium chlorate increase the viscosity. Realgar and aluminium have almost no influence upon the viscosity. Other substances generally decrease the viscosity. Sodium oxalate, barium nitrate, black powder, sulphur and charcoal particularly cause the starch to lose its viscosity. Aramoniiim perchlorate also has a large influence. 

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