This section is from "Scientific American Supplement Volumes 275, 286, 288, 299, 303, 312, 315, 324, 344 and 358". Also available from Amazon: Scientific American Reference Book.
By MM. P SCHUTZENBERGER and N. TONINE.
All portions of this petroleum contain saturated carbides of the formula C, which the authors name paraffenes. At a bright red heat they yield benzinic carbides, C, naphthalin and a little anthracen. At dull redness the products are along with unaltered paraffenes, products which unite energetically with bromine, and which are converted into resinous polymers of ordinary sulphuric acid. It is difficult to isolate, by means of fractional distillation, definite products with constant boiling points.