TIME OF SET OF SILICA GELS: IV. THE EFFECT OF ALDEHYDES AND SUGARS OVER A pH RANGE

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Abstract
The effects of a series of sugars, aldehydes, and other substances on the time of set of silica gels have been investigated over a pH range. Diacetone alcohol, propionaldehyde, rhamnose hydrate, and xylose give curves similar to those previously obtained with the alcohols having a constant and equal effect at pH 7. The hexoses behave as a group while the disaccharides show divergent effects. Propionaldehyde and acetone give very similar curves. The implications of the results are discussed.

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