Assertion: vanillin | /r/HasProperty | obtained in example
Facets:
Source sentences:
text: In addition, the vanillin obtained in Example I was very more much difiicult to purify to U. S. B. grade.
text: In contrast, the vanillin obtained in the other examples, where the oil was used as a distilling aid, was so pure that it was readily and economically brought to U. S. P. grade by usual procedures such as two organic solvent crystallizations and one water crystallization.