Abstract
1) The wetting of alkali cellulose by liquid CS2 in xanthaion apparata was obsrved, using solid paraffin-CCl4 solution colored with Sudan III as a tracer of liquid CS2. CCl4 was removed by evaporation, and alkali celluose marked with solid paraffin was separated from intact part by the flotation on water. Each amount of cellulose was determined after extracting the solid paraffin and alkali. Alkali cellulose is supposed to be considerably wetted by liquid CS2 in ordinary industrial reaction conditions. Visually homogeneous wetting is reached within very short time in a kneader, whereas a rotating drum (churn) shows less mixing action.2) Neither the CS2 yield (ratio of CS2 amount consumed for the xanthate formatiom to that consumed totally) nor the water solubility of reaction product showed abnormality, even if alkali cellulose was made reacted with excess liquid CS2.3) When H2S containing excess liquid CS2 was used for reaction, CS2 yield decreases and solubility of reaction product lessens considerably.
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