Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title On the Transformation of Picric Acid into Picramic Acid, and the Detection of Grape Sugar (Ueber die Umwandlung der Pikrinsaeure in Pikraminsaeure und Ueber die Nachweisung des Traubenzuckers).
Author Braun., C. D. ;
CORP Author Environmental Protection Agency, Research Triangle Park, N.C. Translation Services Section.
Year Published 1965
Report Number EPA-TR-76-573;
Stock Number PB-258 669-T
Additional Subjects Sugars ; Chemical analysis ; Qualitative analysis ; Glucose ; Grapes ; Picric acid ; Germany ; Translations ;
Library Call Number Additional Info Location Last
NTIS  PB-258 669-T Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 7p
This nineteenth century report briefly discusses the relation of glucose to picric acid which yields a useful reaction for the detection of glucose. It is stated that it is best to prepare a picric acid solution of the concentration used for the detection of prussic acid, so that there are 250 parts water to 1 part acid. One proceeds in the testing expediently by adding a few drops of picric acid to a glucose solution which has been mixed with some soda lye, and then heating the mixture to boiling. If the glucose solution was only somewhat concentrated, one will now obtain an intensely blood red fluid, while the color of thinner glucose solutions will be deep red. Since cane sugar does not demonstrate this behavior at all, a simple means to recognize the glucose in beet sugar and the like is derived. The author states that the practicing physician will be interested in the new reaction to determine whether a questionable urine is diabetic or not.