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Therapeutics in Dermatology
A reference textbook in dermatology
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Tars

12 May 2014, by AZIB S. & DELAPORTE E.

1 -  DEFINITION, CLASSIFICATION

Tars derive from the dry distillation of a combustible. Combustibles, heated to a high temperature in the absence of air produce various gases and a dark, water-insoluble liquid called tar.

The following tars can be distinguished depending on the combustibles used:

- wood tar (pine or beech tar, birch tar oil, or cedar wood oil or cade oil);

- fossiliferous tars (coal tar);

- sedimentary tars (of schistic or petroleum origin).

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