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:
Apr. 26, 1988
Filed:
Dec. 05, 1983
Applicant:
Inventor:
Eugen Scholz, Garbsen, DE;
Assignee:
Riedel-De Haen Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
436 42 ; 204 / ;
Abstract
For the titrimetric determination of small amounts of water, a Karl Fischer reagent is used which contains sulfur dioxide, iodine and a nitrogen base as essential components. The use of specific nitrogen bases in place of pyridine, which is conventionally used, 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 and can be used as a bicomponent or monocomponent reagent.