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 ;
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB-258 669-T |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
7p |
Abstract |
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. |
Supplementary Notes |
Trans. of Journal fuer Praktische Chemie (East Germany) v96 p411-414 1865. |
Title Annotations |
+++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)--Translation. |
PUB Date Free Form |
1865 |
Category Codes |
7C |
NTIS Prices |
PC A02/MF A01 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
323701696 |
Origin |
NTIS |
Type |
CAT |