Water-soluble carboxymethyl starch (CMS) was oxidized with sodium hypochlorite under different conditions. It was found that the rate of oxidation increases by increasing the hypochlorite concentration and/or reaction temperature. The viscosity of CMS before and after oxidation decreases as the shearing stress increases. Moreover, for a given shearing stress the viscosity decreases sharply by increasing the chlorine consumption.
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El‐Thalouth et al. (1977) studied this question.
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