Open AccessOn the polymorphic changes of ammonium nitrate
Author(s) -
U. Behn
Publication year - 1908
Publication title -
proceedings of the royal society of london. series a, containing papers of a mathematical and physical character
Language(s) - English
Resource type - Journals
eISSN - 2053-9150
pISSN - 0950-1207
DOI - 10.1098/rspa.1908.0039
Subject(s) - ammonium , ammonium nitrate , nitrate , chemistry , materials science , organic chemistry
As has been shown by the extensive investigation of Tammann, polymorphic changes occur far more frequently than is supposed. Among substances which exhibit these phenomena, ammonium nitrate serves as a specially interesting example. Not only does this compound undergo four distinct transformations within a range of 150°, but the remarkable nature of the changes possesses a special interest. The various modifications of ammonium nitrate have been studied repeatedly. The crystallography by Frankenheim (1854), O. Lehmann, Wyrouboff, and Wallerant, the general physical properties by Bellati and Romanese, S. Lussana, and recently by Tammann (1902).