[On the polymorphism of barbiturates in powders and tablets. Part 2: On the infrared spectroscopy and the X-ray diffractometry of barbital (author's transl)].
By means of IR spectroscopy and X-ray diffractometry, two commercial brands of barbital and four barbital substances recrystallized from water or an acetone-water mixture were examined for polymorphism. The results obtained demonstrate that these substances differ in crystal lattice and that there are six polymorphic modifications.
D001462:Barbital / Q000032:analysis*; D001463:Barbiturates / Q000032:analysis*; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D011208:Powders / Q000032:analysis; D013055:Spectrophotometry, Infrared; D013607:Tablets / Q000032:analysis; D013816:Thermodynamics; D014961:X-Ray Diffraction
D001463:Barbiturates; D011208:Powders; D013607:Tablets; D001462:Barbital
Zur polymorphie der Barbiturate in Pulvern und Tabletten. 2. Mitteilung: Zur IR-Spektroskopie und Röntgendiffaktometrie von Barbital.