Читать книгу A Text-book of Paper-making - C. F. Cross - Страница 21

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—Jute absorbs iodine from its solution in potassium iodide. This action is characteristic of all lignified tissues, the quantity of iodine taken up being proportional to the amount of lignification. If the physical conditions remain the same, the amounts of iodine absorbed will be found to be constant for each particular fibre. This constancy points to the formation of a definite chemical compound, probably resembling the blue compound of starch and iodine. This property may be made available for the estimation of the {18} amount of mechanical wood-pulp in papers; it will be more fully considered elsewhere.