Flocculation with different salts

What is it about?

Observations of the density of latex particles are described. Fractal dimensions are useful parameters to characterize the density. These are much higher at a few per cent concentration than those seen in previous studies for dilute dispersions. In particular studies were made with aluminium sulfate and ferric chloride.

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Why is it important?

A surprising observation was that flocculation was observed at lower ionic strength with iron chloride than with aluminium sulfate. This specific ion effect could be attributed to different acidity.