A Study of Colophony Resin: A Dissertation (Classic Reprint) - Hardcover

Hermann Andreas Loos

9780260091635: A Study of Colophony Resin: A Dissertation (Classic Reprint)

Hardcover

ISBN 10: 0260091634 ISBN 13: 9780260091635

Publisher: Forgotten Books, 2018

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Excerpt from A Study of Colophony Resin: A Dissertation

It must not be forgotten however, that other substances, such as terpenes and their oxidation products,' are always present in rosin, and these might tend to reduce the carbon content of the whole. The first crystallizations of abietic acid will, moreover, contain a smaller percentage of carbon than than the pure product, and even a small quantity of impurity will reduce the percentage of this constituent. A sample of abietic acid, prepared by Maly's method, gave, after the second crystallization, the following result on combustion.

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