Physical Sciences and Mathematics Commons^™

The Grignard Reagents: Their Preparation, Flora Cooke

Chemistry Honors Papers

This 14 page thesis examines various methods for the preparation of the Grignard reagent.

The Purification Of Coffee Wax By Means Of A Special Extractor Followed By A Dialysis Process, John Dobrojevic

Bachelors’ Theses

This work was performed with the intention of devising a method where-by true wax could be isolated from a conglomerated mixture called coffee wax.

Sensitivity Of Curcumin As An Organic Reagent In Testing For Beryllium, James W. Bookhamer

Bachelors’ Theses

For many years the analytical chemist avoided by design or more probably by accident the general use of organic chemicals in his work. Some few of them he accepted as a matter of course, and perhaps without much thought of their organic nature. In qualitative analysis he used chloroform as a solvent in testing for bromine and iodine. A few indicators were in common use, but organic chemicals were used but little in analytical work. It was not until the twentieth century that their use in analytical procedures received any worthwhile attention. Since then they have rapidly come to the …

Some Aldehyde Condensation Derivatives Of Creatinine, Clarence England Denoon Jr.

Master's Theses

When insulin, a substance which is used to reduce sugar in the blood is hydrolysed, products are obtained bearing some similarity to creatinine. Therefore, reasoning conversely, creatinine derivatives might be expected to posses as a hypo- glycemic (sugar reducing) effect.

Anhydrous Alcohol And The Vapor Phase Method Of Preparing It, Cleetis Brown

University of the Pacific Theses and Dissertations

Since the almost universal laboratory method of preparing absolute alcohol requires considerable time and trouble, gives a low yield of alcohol and leaves a distilling flask badly clogged with hydrated lime, Professor S.S, Kistler and I undertook the following research in the hope that we might devise a new method that would be both rapid and easy to perform.

Upon reviewing the possibilities, it seemed evident that any method to be rapid would have to involve drying In the vapor phase. Diffusion in a liquid being so slow that when a drying agent is placed in the liquid phase an …

Selenium In Proteins From Toxic Foodstuffs, Edgar Page Painter

Electronic Theses and Dissertations

The importance of the selenium problem has been established. Knight (1) in an address before The Association of Official Agricultural Chemists summarized the progress made on the problem, conservatively emphasized its importance, and stressed the need for extensive research. It is a paramount problem not only in South Dakota, but in many other states as well.

Some Contributions To Iodometric Technique, Justin Kimber Dyche

University of the Pacific Theses and Dissertations

Analysis is a very important branch of chemistry, for it is such a practical part of the science. Analysis is itself divided into two parts. Qualitative analysis discovers what things are present in the material in question. Quantitative analysis then determines how much of each ingredient is present. This thesis considers a limited section of quantitative analysis.

This thesis deals with the use of iodine in volumetric analysis, which is called either iodimetry or iodometry. In this type of analysis, the iodine is used in solution and reacts with some other material, also in solution, and takes up electrons. That …

Effect Of Varying Supports On Nickel As A Catalyst In The Hydrogenation Of Unrefined And Refined Soy Bean Oil, Nate W. Fredman

Bachelors’ Theses

Hydrogenation is a subject that has grown in im­portance only within the last thirty years. Before 1900, little was known about the process of adding hydrogen to a liquid oil to form a solid fat, the latter of which has a great deal more uses than the former. Much trouble was experienced, since conditions controlling the process must be very definite in order to obtain good results.

Chemists have found that the main requisite in the above process is the catalyst. It must be very carefully pre­pared and controlled. But instead of using only the catalyst, many modern research workers …

Identification Of Carboxylic Acids As The Salts Of Benzylamine, Cora Louise Carson

Masters Theses

Molecular compounds have become of increasing interest in organic chemistry since they furnish a valuable group of derivatives for the identification of certain classes of organic compounds, notably, the aromatic hydrocarbons, the amines, and the phenols. In the identification of such compounds it should be pointed out, as Kamm has stated, that the reactions used in the identification of inorganic compounds, namely, color tests, precipitation of an insoluble compound, and decomposition with certain reagents, can be used merely as indications, not as final tests of identification. In identifying any single chemical individual Wise pointed out that it often becomes necessary …

Change Of Conductivity Of Silicic Acid Gels Upon Setting, Robert W. Gurry

Honors Theses

The problem of how electrical conductivity of colloidal sols changes during setting has been a source of much speculation for a long time. Work has been done upon a variety of sols and gels with various and oftentimes conflicting results. The purpose of this investigation was to find out whether the conductivity of a silicic acid sol changes during setting or not; and, if so, how it varies. It was also hoped that the results might lead definitely to some theory of gelation and gel structure.

Effect Of Silicic Acid Gel On The Determination Of Ph, Robert L. Griffeth

Honors Theses

The general purpose of this investigation, as well as many other investigations made on silicic acid gels at Union College, has been to obtain data which may help to formulate an idea of the gel structure and the process of setting of silicic acid gels. The specific object of the research was to determine whether or not the quinhydrone electrometric set-up for measuring the pH of a solution gives the correct pH of a solution in which there is silicic acid gel present. Since a large amount of data has been taken in connection with silicic acid gels in the …

Growth Of Large Crystals, Samuel Silberkraus

Honors Theses

This problem was undertaken with the purpose of investigating several methods of preparing large perfect crystals from solution. The crystals studied were those of Chrome Alum, Copper Sulfate and Rochelle Salt.

The Effect Of Various Indicators On The Time Of Set And Ph Of The Silicic Acid Gels, Antonia L. Digesero

Honors Theses

This work is a continuation of the work started by M. J. Suter. The first part of the work consisted in repeating with extreme accuracy the work already done. Next, the work was continued under the careful guidance of Professor Hurd. The method of determining the PH values of setting gels by indicators has long been in use. It is very useful, but not as accurate as the electrometric method, as the measurements can be made in a short time. The purpose of the research was to find out whether the gels affect the various indicators. This was done by …

A Systematic Analysis Of The Schenectady City Water Supply, Chauncey Pease Foote

Honors Theses

A systematic analysis of the Schenectady City water supply was under-taken to determine whether the chemical composition of the water varied in any definite manner during the winter and spring. Particularly close check was kept on the composition during the period of spring freshets.

Parachors Of Phenol-Amines In Solution, Edward Spreen

Masters Theses

Introduction:

The general procedure in this study was as follows:

1-To carefully prepare and purify the molecular compounds of phenol and the aromatic amines.

2-To determine their parachors in each of the components as solvents.

3-To redetermine the increment for the bond by comparison with the sum of the parachors, calculated and observed, of the two components.

4-To determine by the cryoscopic method the molecular weights of the molecular compounds in phenol as a solvent.

5-To attempt an explanation of the type of bond present in the light of the knowledge acquired by the investigation.

Potentiometric Titration, S. Lillian Kern

Chemistry Honors Papers

This 27 page thesis contains a general description of the theory and technique of potentiometric titrations.

A Contribution To The Preparation Of Synthetic Rubber From Butadiene. Ii., Joseph Patrick Iding

Bachelors’ Theses

Since the World War, the production of synthetic rubber has become the problem not only of the laboratory, but of commerce as well. Several factors demanded this research.

In the first place, the World War made the dependence of countries on each other strikingly evident in several ways, one of which was the need for rubber by great nations whose situations prohibited the planting of the rubber tree and consequently put them under obligation to other countries for their supply.

And now in the last few years this demand for rubber has been increased enormously, through the increased production of …

A Method Of Determining The Relative Thermal Conductivities Of Liquids, Lohr Arthur Burkardt

Bachelors’ Theses

This thesis concerns the development of apparatus suitable for the practical determination of the thermal conductivity of liquids. The data presented in the literature refers to the deter­mination of absolute conductivity values and-is very unsatisfactory from a practical point of view. The aim here has not been to furnish abso­lute data, but to provide a simple means of determining the relative conductivity of any series of liquids. Knowing such a set of rela­tive conductivities, absolute values can readily be calculated therefrom.

The aim has been to develop an apparatus that is simple enough to be constructed in the ordinary laboratory, …

Butyl And Ethanol Ethers Of The Ortho, Meta And Para Xenols., Mary Agatha O'Neill

Electronic Theses and Dissertations

No abstract provided.

Practical Vacuum Drying Theory., John W. Ridgway

Electronic Theses and Dissertations

No abstract provided.

Titanous Chloride As A Standard Reducing Agent, Alfred R. Armstrong

Dissertations, Theses, and Masters Projects

No abstract provided.

A Study On The Liesegang Phenomenon, Earl Francis Rothemich

Honors Theses

This work is a continuation of an attempt to explain the Liesegang Phenomenon by using probing electrodes inside the gel. A study of what happens as one salt diffuses into a gel containing another salt with the precipitation of the reaction product in the gel, as well as the case of diffusion of a salt into a gel containing a small amount as the same salt has been made.

By the use of the probing electrodes it is possible to actually get inside the gel and in this manner observe how the concentration of the salt in the gel changes …

A Study Of The Effect Of Quinhydrone On The Time Of Set Of Silicic Acid Gells And Of The Effect Of Silicic Acid Gel On The Determination Of Ph By The Quinhydrone Electrode, James E. Malone

Honors Theses

The studies discussed in this report are supplementary to the work being done at Union College on silicic acid gels. In as much data has been taken in this work using pH as determined by the quinhydrone electrode, it was desired that a study be made of the effect of quinhydrone on the gel and of gel on the quinhydrone determinations. The pH of gels during their setting has been worked on and the first part of the experiment deals with the effect of quinhydrone on the time of set of silicic acid gel. Then it was desired to know …

The Thermal Dissociation Of Lithium Hydride, Benjamin M. Walker

Honors Theses

In previous work at the Union College laboratory a method was finally developed which overcame the difficulties of the earlier studies of calcium-hydrogen equilibrium. The results obtained were in good agreement with the best work of other investigators. In the present work, an attempt was made to extend this method to a study of the lithium-hydrogen equilibrium.

Precipitations In Gels, Bernard Freeman

Honors Theses

Numerous investigations of reactions in gels have been conducted since Liesegang’s1 discovery, in 1896, of the periodic nature of silver chromate. Liesegang obtained rhythmic bands by the diffusion of silver nitrate in a gel containing K2Cr2O7.

A Study Of The Velocity Of Ions In Silica Gels When Under The Influence Of A Potential, John Galaba

Honors Theses

There is speculation among chemists as to the structure of gels. In an effort to get information on this subject, chemists have studied the properties of and reactions in gels. The results have led to conflicting theories. This work measuring the velocity of ions in silica gel has been done in the hope that it may add to the knowledge of the behavior of gels and furnish a further clue towards the correct structure of silica gels.

A Study Of Methods For Separating The Elements That Interfere In The Electrolytic Deposition Of Lead As Lead Oxide, John Shaw Sabine

Masters Theses

"The electrolytic determination of lead as lead dioxide is a very desirable method, due to its simplicity, accuracy, and the small amount of the analyst's time required. The electrolytic method functions when both large and small amounts of lead are present. The method depends upon the fact that from a nitric acid solution the lead is plated upon the anode as lead dioxide; from the lead dioxide deposit the percentage of lead may be calculated.

An electrolytic method, for determining the lead in samples containing from 5 to 150 mg. of lead, was described in a paper by Schrenk and …

The Preparation And Specific Gravity Of Pure Formic Acid And Its Aqueous Solutions, Leo Henry Merchie

Masters Theses

"Formic acid, the lowest member of the fatty acid series, was obtained as early as the seventeenth century by distilling ants with water. Other methods were later found after the correct constitution of the acid became known. This acid is not difficult to prepare in a water solution, but it is difficult to obtain in the anhydrous state...The purpose of this work is to study the various methods of preparing anhydrous formic acid, to improve a method for preparing the anhydrous acid, and to correct specific gravity tables for aqueous solutions of formic acid"--Introduction, page 1-2.

The Oxidation Of Amino Alcohols., Loran S. O'Bannon 1910-1995

Electronic Theses and Dissertations

No abstract provided.

Drying Of Solids : I. Prussian Blue., Orville K. Schmied 1910-1984

Electronic Theses and Dissertations

No abstract provided.