Hydration complete

The very unsymmetrical acetylene 48, with a ketone on one side of the alkyne and a cA-alkene on the other, hydrates completely regioselectively9 to the diketone 49. 

The hydrated lime then reacts with the reactive silica and alumina to produce hydrated calcium and magnesium silicates and aluminates. The cement also hydrates completely. 

Barium aluminate cement liydrates quite rapidly, and at sufficiently high water/cement ratios it may hydrate completely within three days. The hardened cement paste exhibits only a small strength loss if heated to high temperatures. 

The isoelectric pH values of albumin and gelatin were measured by microelectrophoresis and by ion exchange [10]. Hydrochloric acid, sodium hydroxide, sodium chloride and other chemicals used were of analytical grade and obtained from Fisher Scientific, USA. The polyion solutions were prepared by dispersion in distilled water at 40 0.1°C. The polyions were allowed to hydrate completely this took 30 min to 1 h. Following hydration the solutions were deionized by mixing for 30 min at 40 O.UC with Amberlite resins IR-120P and IR-400 before use. This method is an adaptation of that of Janus et al. [57]. 

Thermal analyses of the salts show that it is difficult to remove the water of hydration completely without decomposing the compound. 

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