The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 31, 1984
Filed:
Aug. 27, 1982
Applicant:
Inventor:
Eugen Scholz, Garbsen, DE;
Assignee:
Riedel-de Haen Ag., Seelze, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
436 42 ; 73 73 ; 116 26 ;
Abstract
For the titrimetric determination of small amounts of water, the Karl Fischer reagent is used which contains sulfur dioxide, iodine and pyridine as essential components. Replacement of pyridine by specific nitrogen bases is advantageous. Particularly suitable are selected aliphatic amines and nitrogen-containing heterocyclic compounds, especially imidazoles. The pyridine-free titration agent is distinguished by high storage stability; it can be used as bicomponent or monocomponent reagent.