Note 212 — FOREWORD (continued 2)
Reading edition
U. S. patent number 812,554—the novocain patent—declares that the salt melts at 156 C. Evidently based on this, the German Pharmacopoeia Remedia “Hoechst” and past editions of New and Nonofficial Remedies give this melting point. Two specimens of German made novocain obtained from our files, stated to be manufactured by Farbwerke-Hoechst vorm. Meister, Lucius and Bruening, Hoechst a.M. were found to melt, respectively, between 154 and 155 C. and between 153.5 and 154.5 C. when the melting point was determined according to the directions of the U. S. Pharmacopoeia, 9th revision. The various specimens examined at that time melted between 153 and 155 C. and it was decided to permit this range.