Abstract
AbstractIn the course of work in this laboratory it was desired to separate the constituents of a comercmial sample of chestnut tannin. A method of effecting at least a partial separation is described; it appears that this may be more generally useful in tannin fractionations as it is also applicable to oak and quebracho tannins.When an aqueous solution of chestnut tannin is passed through an absorbing column of wood cellulose powder (Solka Floc), and the column is subsequently developed with a 4% solution of sodium chloride, at least six different bands show up; the fractions represented by these bands have been collected and show different properties. The fractions are not pure, but refractionation of one of the major bands demonstrates that further purification is easily achieved.
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