Moisture Determination with Karl Fischer Reagent Utilizing an Enthalpimetric Temperature Pulse.

1966 ◽  
Vol 38 (12) ◽  
pp. 1750-1751 ◽  
Author(s):  
J. C. Wasilewski ◽  
C. D. Miller
Keyword(s):  
Moisture Determination ◽  
Karl Fischer ◽  
Temperature Pulse

Moisture determination using Karl Fischer titrations

1991 ◽  
Vol 63 (10) ◽  
pp. 557A-566A ◽  
Author(s):  
Steven K. MacLeod
Keyword(s):  
Moisture Determination ◽  
Karl Fischer

MOISTURE DETERMINATION IN CRUDE DRUGS BY THE KARL FISCHER METHOD

Planta Medica ◽  
1968 ◽  
Vol 16 (04) ◽  
pp. 388-394 ◽  
Author(s):  
P. Cowley ◽  
F. Evans ◽  
H. Michaels
Keyword(s):  
Moisture Determination ◽  
Karl Fischer ◽  
Karl Fischer Method ◽  
Crude Drugs ◽  
Fischer Method

scholarly journals Simple Modification of Karl-Fischer Titration Method for Determination of Water Content in Colored Samples

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Eva Tavčar ◽  
Erika Turk ◽  
Samo Kreft
Keyword(s):  
Water Content ◽  
Visual Detection ◽  
Moisture Determination ◽  
Spectrophotometric Detection ◽  
Karl Fischer Titration ◽  
Simple Modification ◽  
Karl Fischer ◽  
Titration Endpoint ◽  
Specialized Equipment

The most commonly used technique for water content determination is Karl-Fischer titration with electrometric detection, requiring specialized equipment. When appropriate equipment is not available, the method can be performed through visual detection of a titration endpoint, which does not enable an analysis of colored samples. Here, we developed a method with spectrophotometric detection of a titration endpoint, appropriate for moisture determination of colored samples. The reaction takes place in a sealed 4 ml cuvette. Detection is performed at 520 nm. Titration endpoint is determined from the graph of absorbance plotted against titration volume. The method has appropriate reproducibility (), accuracy, and linearity ().

Comparison of Accuracy, Precision, and Speed of Three Methods for Determining Moisture in Milk Chocolate

1977 ◽  
Vol 60 (2) ◽  
pp. 302-306
Author(s):  
Wesley R Kreiser ◽  
Robert A Martin
Keyword(s):  
Azeotropic Distillation ◽  
Official Method ◽  
Moisture Determination ◽  
Distillation Method ◽  
Titration Method ◽  
Milk Chocolate ◽  
Karl Fischer Titration ◽  
Karl Fischer ◽  
Aoac Official ◽  
Aoac Official Method

Abstract Samples of grated milk chocolate were equilibrated with moisture at increased humidity levels. In the first part of the study, the moisture content of the samples was determined by using the alternative OICC method, manual Karl Fischer titration, and azeotropic distillation. In the second part of the study, the AOAC official method (13.002), azeotropic distillation, and an automated Karl Fischer titration were used for the moisture determination. The results show that the Karl Fischer titration method is more accurate, more precise, and much faster than either of the official methods tested. The azeotropic distillation method gives results that are comparable with those obtained using the Karl Fischer titration method but it requires much more time.

scholarly journals Comparison between THE oven and THE Karl Fischer methodS for THE determination of the moisture content of maize (Zea mays L.) and soya (Glycine max (L) Merrill) seeds

1996 ◽  
Vol 53 (1) ◽  
pp. 67-72 ◽  
Author(s):  
M.A.A TILLMANN ◽  
S.M CICERO
Keyword(s):  
Water Content ◽  
Official Method ◽  
Moisture Determination ◽  
Oven Method ◽  
Drying Time ◽  
Karl Fischer ◽  
Seed Moisture ◽  
Different Temperatures ◽  
Long Time ◽  
Seed Water Content

The objective of the present paper was to compare the seed water content of maize and soya, obtained by the oven method at different temperatures and the Karl Fischer method. The water contents used were 11.2 %, 12.8 % and 16.2 % for maize and 10.7 %, 12.4 % and 16.0 % for soya. Samples were dried for a sufficiently long time in order to obtain the same results in both methods. The results indicate that the official method for seed moisture determination (105oC oven method) should be revised in order to obtain more reliable results. The drying time in the oven varied according to the seed water content and the temperature used.

Factors which affect the gelling characteristics of aluminium soaps

1950 ◽  
Vol 200 (1061) ◽  
pp. 148-154 ◽  
Keyword(s):  
Recent Work ◽  
Salt Solution ◽  
Soap Solution ◽  
Sodium Soap ◽  
Moisture Determination ◽  
Karl Fischer ◽  
Manufacturing Technique ◽  
Hydrocarbon Solvents ◽  
Gelling Property ◽  
Effect Of Structure

Three methods of making aluminium soaps are described, and one, the 'metathetic reaction between a sodium soap solution and an aluminium salt solution, is discussed in detail. The effect of variations in manufacturing technique upon the gelling characteristics of the product is considered. Recent work by various investigators on the structure of aluminium soaps is reviewed, particularly in relation to the effect of structure and peptizers upon the gelling property in hydrocarbon solvents. Mention is made of the more important methods of moisture determination and results obtained by the use of the Karl Fischer reagent are quoted.

Moisture Determination Using Karl Fischer Τitrations

1991 ◽  
Vol 63 (10) ◽  
pp. 557A-566A ◽  
Author(s):  
Steven Κ. MacLeod
Keyword(s):  
Moisture Determination ◽  
Karl Fischer
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