Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 836
careful regulation of the tem-perature, so that the benzol may be distilled off from other substances, boil-ing at a somewhat higher temperature, with which it is mixed. Even thenthe resulting liquid (commercial benzol) contains notable quantities oftoluol. If benzol be added in small quantities at… … Fig. 353.—Iron Pots for jnaking Nitro-Benzol. benzol will have disappeared, for nitric acid under such circumstances actsupon it by taking out of each particle an atom of hydrogen, which it re-places by SigroKp of atoms of nitrogen and oxygen, and, instead of benzol,we have the yellow oil,…
Inventions
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