Benedikt, Rudolf, 1852-1896, Knecht, Edmund, 1861-1925 · London : G. Bell and Sons · leaf 81
g-points of the three xylenes lie so near each other (about 140^) that a separation by fractional distillation is not possible. Xylene is lighter than benzene or toluene. Its specific gravity is 0* 866 at 15°. Naphthalene. Naphthalene consists of white leaflets, which possess a peculiar smell, and… … It will be seen in looking at this formula that in the formation of mono-substitution products two isomers are obtained, according as the hydrogen atoms marked or those marked a are replaced in the following scheme : — a a Thus by replacing one hydrogen atom by OH, two
Coal-tar colors
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