divi-divi
The tannin-rich pods of a large genus of trees and
woody climbers (Caesalpinia) native to the tropics
and sub-tropics The most important is Caesalpinia
coriaria. Divi-divi pods contain a high percentage
of tannin (40-4%) which is easily leached out. It
is one of the pyrogallol class of tannins and
produces a light-colored leather. It is usually
used along with other tannins, because when used
alone it produces a leather that is soft and
spongy in a damp atmosphere and which lacks
pliability in dry weather. In addition, the amount
of sugary matter present in the pods results in
too rapid fermentation of the tan liquor. This may
produce reddish stains in the leather, which can,
however, be controlled to some extent by the use
of appropriate antiseptics. Divi-divi is also used
in leather manufacture as a dye. See also: VEGETABLE TANNINS .
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