The addition of magnesium sulfate to xanthation mixtures of crosslinked starch aided isolation, scaleup and room‐temperature product stability on storage. Pilot‐plant scaleup of laboratory‐developed procedures also yielded water‐insoluble products effective in removing heavy metals from water. Several different processing methods are presented to show the ease of preparation and use of the products.
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Wing et al. (1978) studied this question.
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