Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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dhawa ( country sumac, Indian sumac )

A tree (Anogeissus latifolia) common to many parts of India, the leaves of which yield a tannin used in that country. The tannin content of the leaves varies considerably, ranging from less than 30% to more than 50%, depending on the age of the trees when the leaves are gathered. The proportion of soluble non-tans is 10 to 13%. Dhawa is considered to be well suited for the tanning of light leathers, giving a soft leather of a light color and firm texture. Dhawa is also the source of GHATTI GUM , See also: VEGETABLE TANNINS .

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