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[BKARTS] Thymol

There was another concern about thymol (which is 5-methyl-2- isopropyl-1-phenol) other than its carcinogenic properties. Paper, pigments, and vellum that had been exposed to thymol as a disinfectant later showed discoloration and degradation which were accelerated by heat, humidity, and UV exposure.
Tests of identical papers and media, differing only in the exposure to thymol, demonstrated significantly increased degradation in the exposed samples after accelerated aging tests (yes, that bugabear again!).
The rational conclusion is that if at possible the use of thymol should be avoided.
Best, James

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