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56 results
  1. ... others as are important. Of Napthaline and its Derivatives.—This substance is a very usual product of the decomposition of organic substances by heat; it is obtained abundantly by rectifying coal-gas tar; it crystallizes in white silvery plates; its specific ...
  2. ... others as are important. Of Napthaline and its Derivatives.—This substance is a very usual product of the decomposition of organic substances by heat; it is obtained abundantly by rectifying coal-gas tar; it crystallizes in white silvery plates; its specific ...
  3. ... suitable small coal, must far surpass any natural coal for steam purposes. Some years ago the pitch produced from the distillation of gas-tar accumulated to such an extent, notwithstanding its application ...
  4. ... agglutinative substances are those which give cohesion to coal naturally, and which separate on distillation-that is, tar and its derivatives, pitch and resin. According to Professor Nollet of Brussels ...
  5. ... occupational exposures are associated with the inhalation of coal tar and pitch fumes and dusts, mists and fogs of petroleum derivatives, soot, vapors of isopropyl oil, that is, the ...
  6. ... others as are important. Of Napthaline and Us Derivatives.—This substance is a very usual product of the decomposition of organic substances by heat; it is obtained abundantly by rectifying coal-gas tar; it crystallizes in white silvery plates; its specific ...
  7. ... others as are important. Of Napthaline and Us Derivatives.—This substance is a very usual product ot the decomposition of organic substances by heat; it is obtained abundantly by rectifying coal-gas tar; it crystallizes in white silvery plates; its specific ...
  8. ... of, 440. Anthracene, 353, 362, 374. brown, 399. derivatives, 377. dyes, 399. in tar and pitch, 367. oil, 353, 361. series, 374. sulphonic-acids, 381. tests of, 367. Anthracite coal, 340. Anthragallol, 399. Anthrapurpurin, 399. Anthraquinone, 363, 385. ...
  9. ... afterwards discovered by Faraday as a constituent of coal-gas tar. This tar, when distilled, furnishes coal-naphtha (the commercial benzine above referred to), a ...
  10. ... was afterward discovered to be a constituent of coal-gas tar, which, when distilled, furnishes coal naphtha, or the ... A naphtha obtained by the distil- lation of coal-gas tar. Coal Tar. A dark, thick liquid or semi- ...
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