Water determination by Karl Fischer titration theory and applications by G. Wieland

Cover of: Water determination by Karl Fischer titration | G. Wieland

Published by Git Verlag in Darmstadt .

Written in English

Read online

Subjects:

  • Karl Fischer technique.,
  • Water -- Analysis.,
  • Volumetric analysis.

Edition Notes

Book details

StatementG. Wieland.
ContributionsFisher, Karl, 1901-1958.
Classifications
LC ClassificationsQD142 .W475 1987
The Physical Object
Paginationvii, 97 p. :
Number of Pages97
ID Numbers
Open LibraryOL2108758M
LC Control Number88161018

Download Water determination by Karl Fischer titration

The Karl Fischer titration is used in many different ways following its publication in and further applications are continually being explored.

At the present time we are experiencing another phase of expansion, as shown by the development of new titration equipment and new by: The Karl Fischer titration is used in many different ways following its publication in and further applications are continually being explored.

At the present time we are experiencing another phase of expansion, as shown by the development of new titration equipment and new reagents.

KF equipment increasingly incorporates microprocessors which enable the course of a titration to be. Water determination by Karl Fischer titration: Theory and applications Paperback – January 1, by G Wieland (Author) See all formats and editions Hide other formats and editions. Price New from Used from Paperback, January 1, "Please retry" — — — Paperback Author: G Wieland.

: Water Determination by Karl Fischer Titration: Theory and Applications: Paperback book in VG condition, with some wear and rubbing. Internally clean, 97pp. Water Determination by Karl Fischer Titration. Karl Fischer Acetic acid added addition amount of water anode apparatus approx Water determination by Karl Fischer titration book ASTM bottle buffer burette carried chloroform combined KF reagent compartment connected contain coulometric depends detection difference direct titration dissolve dried electrode end point especially extraction Fischer solution pyridine-free.

The titrimetric determination of water by the Karl Fischer method depends on the reaction that takes place quantitatively between water and a reagent consisting of sulfur dioxide and iodine in anhydrous pyridine and usually methanol. The reaction is carried out. History of Karl Fischer Titration The milestones changed the world of KF titration 8 • Karl Fischer published a reagent for water determination consisting of iodine, SO2, pyridine and methanol • Eugen Scholz and Helga Hoffmann, Riedel-de Haën, replaced pyridine by imidazole and invented Hydranal reagents.

This procedure is used for the measurement of water in consumer products and is based on the Karl Fischer (KF) procedures specified in ASTM D and ASTM D Water is determined by using commercially available standard Karl Fischer reagent integrated with a drying oven.

The use of trade names or commercial products. In book: Specification of Drug Substances and Products, Development and Validation of Analytical Methods (pp) Schlink, R.

Water Determination by Karl Fischer Titration. Metr ohm. Best Sellers Today's Deals Electronics Gift Ideas Customer Service Books New Releases Home Computers Gift Cards Coupons Sell All Books Children's Books School Books History Fiction Travel & Holiday Arts & Photography Mystery & Suspense Business & InvestingAuthor: Eugen Scholz.

Bruttel P, Schlink R. Water determination by Karl Fischer titration, Metrohm Mono-graph (Article Number: ), Metrohm AG in Herisau, Switzerland,P. The Karl Fischer (KF) titration is a method of determining the water content of solid, liquid and gaseous samples.

It is the technique preferred for use in industrial quality control. In principle it involves the oxidation of sulfur dioxide by iodine, in the presence of water, in a buffered solution.

An alcohol is used as the preferred solvent. Karl Fischer Titration book. Read reviews from world’s largest community for readers. - Buy Karl Fischer Titration: Determination of Water (Chemical Laboratory Practice) book online at best prices in India on Read Karl Fischer Titration: Determination of Water (Chemical Laboratory Practice) book reviews & author details Author: Eugen Scholz.

The Karl Fischer titration is used in many different ways following its publication in and further applications are continually being explored.

At the Our Stores Are Open Book Annex Membership Educators Gift Cards Stores & Events Help. The determination of water in thiols is complicated by the fact that the Karl Fischer reagent reacts essentially quantitatively with thiols. To obviate this interference, Mit- chell and Smith' recommend the boron trifluoride cata- lysed addition of the thiol to the double bond of octene, producing the thioether, or sulphide, which is inert to.

Complete solutions for the volumetric and coulometric water content determination with Karl Fischer titration: Titrators, accessories, and know-how from the world’s leading provider.

We use cookies Our website uses cookies to offer you the best possible browsing experience. Water determination with Karl Fischer titration Principle: Karl Fischer titration is used for many substances as a reference method, and is a chemical analysis based on the oxidation of sulfur dioxide by iodine in a methanolic hydroxide solution.

Volumetric Karl Fischer titration requires the determination of the titre (t) of the Karl Fischer reagent. It is usually quoted in mg of water per ml of Karl Fischer reagent.

Modern reagents allow direct titration of water in the sample. The sample may be introduced directly into the KF cell or after an extraction or dissolution with a suit. History of Karl Fischer Titration •Karl Fischer (Ma – Ap ) was a German chemist •Published a method in to determine trace amounts of water in samples.

This method is now called Karl Fischer titration. Abbreviations: KF or KFT •It remains the primary method of water content determination used worldwide by. Karl Fischer titration is essentially based on the Bunsen reaction used for the determination of sulphur dioxide in aqueous solution: If an excess of sulphur dioxide with simultaneous neutralization of the sulphuric acid formed shift the reaction equilibrium to the right, the Bunsen reaction can also be used for the determination of water.

The Karl-Fischer reagent is placed into the titration cell without diaphragm. The coulometer is started and the solvent is titrated dry. After preliminary titration and stabilisation of drift the sample is injected into the titration cell with a syringe (exact sample weight determination by weighing of syringe before and after injection) and.

Additional Physical Format: Online version: Wieland, G. Water determination by Karl Fischer titration. Darmstadt: Git Verlag, © (OCoLC) Water Determination by Karl Fischer Karl Fischer titration has become one of the most widely used techniques for the determination of water content in a variety of substances.

Many pharmaceutical products contain water in adsorbed form, and as a result, the de-termination of the water content is important in demon. Titration one component system. Reagents: Titrant Aquastar ® - CombiTitrant 5 - One component reagent for volumetric Karl Fischer titration, 1 mL = approx.

5 mg water or Aquastar ® - CombiTitrant 2 - One component reagent for volumetric Karl Fischer titration, 1 mL = approx. 2 mg water. Solvent 50 mL Aquastar ® - CombiMethanol - Solvent for volumetric Karl Fischer. Karl Fischer titration is a classic titration method in chemical analysis that uses coulometric or volumetric titration to determine trace amounts of water in a sample.

It was invented in by the German chemist Karl Fischer. Today, the titration is done with an automated Karl Fischer titrator. First German DIN standard for the Karl Fischer titration (DINApril“Testing of mineral oil hydrocarbons and solvents: Determination of water content according to Karl Fischer - Direct method”).

Publication: Coulometric Karl Fischer Titration by A. Meyer and C. [4]. Water Content by Karl Fischer The most important method of determination of water content is the Karl Fischer electrometric titration method.

It is widely applied for moisture determination of drug substances because it is very rapid, specific and requires a very small amount of sample. karl-fischer-titration. In quality control department Instrument section is an essential part because every test requires a specific instrument to perform a valid analysis.

Karl Fischer titration is very essential in many analyses including finding the water content in any substance. Most of the APIs used in the pharmaceutical Industry have.

Karl Fischer Moisture Content Determination. The Karl Fischer moisture determination technique is based on the fundamental reaction in which iodine is reduced by sulfur dioxide in the presence of water.

This reaction gives a recognizable endpoint (color change). As shown in Formula (1) below, the Karl Fischer method uses Karl Fischer reagent, which reacts quantitatively and selectively with water, to measure moisture content.

Karl Fischer reagent consists of iodine, sulfur dioxide, a base and a solvent, such as alcohol. I 2 +SO 2 +3Base+ROH+H 2 O ⇒ 2Base+HI+Base+HSO 4 R (1) As described. Karl Fischer Titration Procedure.

The Karl Fischer titration experiment can be performed in two different methods. They are: Volumetric determination – This technique is suitable to determine water content down to 1% of water. The sample is dissolved in KF methanol and the iodine is added to KF Reagent.

The endpoint is detected. This test method covers the direct determination of water in the range of 10 mg/kg to 25 mg/kg entrained water in petroleum products and hydrocarbons using automated instrumentation. This test method also covers the indirect analysis of water thermally removed from samples and swept with dry inert gas into the Karl Fischer titration cell.

Scharlau Aquagent® Coulometric Karl Fischer Titration Using Cells with Diaphragm - Duration: Scharlab The Lab Sourcing Gr views. Water Determination by Karl Fischer Titration 3 1.

Introduction 2. Reagents 3. Chemical reactions 4. Volumetry and coulometry 5. Detection methods (EP) 6. Instruments 7. Side reactions 8. Sample preparation techniques 9. Water determination in raw materials / basic chemicals Water determination in cosmetics and drugs Water determination in foodstuffs and semi-luxuries My Visual Book (Graphy) Link 👇🏻 (Must Try) (Basics of Analytical Chemistry in Hindi) Karl Fischer Titration, Karl Fischer Aqu.

Join this webinar and learn how Honeywell’s Karl Fischer titration product line, Hydranal™, offers solution for every type of sample matrix. Webinar Honeywell: Water Determination in Food & Beverage and Petrochemical Applications.

Karl Fischer discovered that if sulfur dioxide is added in the excess the same reaction can be used for water determination by titration of the produced acids. His base of choice was pyridine which was allegedly “just standing in the rack”. In his honor the titration is named Karl Fischer titration (KF titration for short).

Spectrophotometric Determination of Microgram Quantities of Vaporizable Water from Solids Using Karl Fischer Reagent. Analytical Chemistry33 (3).

Improve your Karl Fischer Titration Process for Water Determination Separation Science, in collaboration with the life science business of Merck KGaA, Darmstadt, Germany and Mettler-Toledo offers an on-demand webinar that describes how to avoid errors, get tips & .This International Standard specifies a coulometric Karl Fischer titration method for the direct determination of water in crude petroleum.

It covers the range 0, % (m/m) to 5,00 % (m/m) water in crude petroleum containing less than 0,05 % (m/m) but more than 0, % (m/m) of either mercaptan sulfur or sulfide ion sulfur or both.The Chemistry of Karl Fischer Titration The Karl Fischer technique for water determination, invented in by Karl Fischer, is a titration based on the Bunsen reaction.

In it was postulated by Dr. E. Scholz as a two-step equation.

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