Chemistry Commons^™

The Possibility Of Mercuric Sulfide Having A Yellow Color, John Joseph Savignac

Bachelors’ Theses

The author chose this particular problem because it is directly connected with a subject which he had previously studied and found very interesting. It was also of interest to this author because the answer to the immediate problem must be definite and without qualification, thus leaving no room for ambiguity.

Electrometric Microdetermination Of Water In Tungsten And Molybdenum Metal Powders By The Karl Fischer Reagent, Helen C. Efinger

Bachelors’ Theses

The problem of the determination of the moisture content or metal powders has been suggested by the Fansteel Metallur­gical Corporation, where I was formerly employed, as one which might prove of interest to them. I have been particularly interested in a topic of this nature since my only laboratory experience has been in metallurgical chemistry.

In this work I intend to make a comparison and evaluation of various methods of determining the moisture content of tungsten and molybdenum powders in order to show which would be the most applicable. Most of the common methods for determining the amount of moisture …

The Construction And Testing Of An Ionization Chamber Designed For Use In Measuring The Roentgen Intensity Of An X-Ray Source, William F. Lindsay

Bachelors’ Theses

It was the author’s assignment for an undergraduate thesis, to construct an ionization chamber, which, when connected to a Dershem electrometer, could be used to determine the intensity of an X-ray source producing ionization within the chamber. It was desired that the chamber conform to the physical dimensions of the ionization intensity unit, commonly called the “Roentgen".

Solidified Alcohols, Mary Kay Enright

Bachelors’ Theses

The relatively new field of science, colloid chemistry, has risen to become an important addition to man's knowledge of the behavior of matter in the natural world and in the laboratory. Although it can no longer be viewed as a new science, it is still new enough to contain unexplored fields and to intrigue the investigator.

The study of gel formation has been received with interest by chemists of the nineteenth and twentieth centuries. This phenomenon of sudden gel formation instead of the expected crystalline precipitate while extracting with alcohol was encountered often in experimental work.

The inquisitive mind would …

An Investigation Of Haury And Ballard's Method Of Production Of Diketones As Applied To Diketones With Aromatic Nuclei, Eugene Chester Dziadulewicz

Bachelors’ Theses

This investigation was undertaken to determine the feasibility of preparing aromatic diketones by the new and novel method proposed by Haury and Ballard.

An Experimental Investigation Of The Alac Processes For The Volumetric Determination Of Phosphates, Gilbert O. Isaacson

Bachelors’ Theses

At present, the best method for the quantitative determination of phosphates is the long gravimetric procedure known as the phospho-molybdate method. Theoretically, a volumetric method using alkalimetry and acidimetry techniques should be applicable. The work reported in the following pages represents an attempt to apply this theory, and thereby greatly facilitate quantitative analysis f or this class of compounds.

The Preparation Of Ammonium Tetrachloro Diiodo Stannate, Stanley M. Polewski

Bachelors’ Theses

The commercial application of mixed halogen compounds in comparison to that of mono-halogen compounds is very limited. It is probably for this reason that the amount of work done in the attempt to prepare mixed halogen compounds has been very small. The author has tried, in a small way, to help fill this large gap by attempting to prepare the compound, ammonium tetrachloro diiodo stannate.

A Study Of Alcoholysis Using Methyl Esters And Tall Oil, Raymond Martin Frey

Bachelors’ Theses

One of the Easiest ways of preparing new esters is by heating an ester with another alcohol which frequently permits transfer of the acid radical from the original ester to the added alcohol, thous forming a new ester and liberating the other alcohol. Preparation of triglycerides of unsaturated fatty acids of 18 carbon atoms is hampered by the fact that prolonged heating in the usual ester formation methods causes both polymerization and condensation among acid radicals unless oxygen is carefully excluded from the reaction atmosphere. Consequently a method of acid interchange might afford the triglycerides at a faster rate and …

Solid Reactions: The Influence Of Temperature And Concentration, Norman H. Kowert

Bachelors’ Theses

Reactions are constantly taking place all around us. They are the basis of chemistry. Without reactions, there could be no change, and, therefore, no chemistry. Most reactions can be easily visualized; as, for instance, when two liquids are mixed together, or two gases, or a gas and a liquid. When reactions between these substances take place, we take it as a matter of course. There is another type of reaction, however, which does take place, but which is not easily visualized. This is the reaction between two solid substances. Due in part to the nature of solids, their crystalline form, …

Preparation Of The Phenyl Urethans Of Saturated Aliphatic Liquid Alcohols And A Comparison Of Their Properties With Those Reported In The Literature, Mary Ann Mesoloras

Bachelors’ Theses

An investigation of the phenyl urethans of saturated, aliphatic, liquid alcohols disclosed that there was a great discrepancy in the literature with regard to the melting points of these compounds. It was also found that the preparations of the phenyl urethans were either vague or specific for a few selected alcohols.

The purpose of this thesis was to prepare these derivatives in the laboratory in order to compare the melting points found to those in the literature.

Liquid Potassium Soaps From Coconut And Corn Oils, Jack R. Kaestner

Bachelors’ Theses

My interest in liquid potassium soaps began a number of years ago. At this time I was employed at a company that manufactured various cleaning preparations, one of these being a liquid soap prepared by the interaction of potassium hydroxide and cocoanut oil. It was there that I first became acquainted with techniques and problems encountered in the soap industry.

The above mentioned notes took place during the middle of World War II, and consequently the author became familiar with some of the different fats and oils that were substituted for the then unavailable Philippine coconut oil. All of the …

The Possibility Of Using Gelatin As A Substrate In Determining The Effect Of Ph On The Activity Of Hyaluronidase, Robert P. O'Driscoll

Bachelors’ Theses

The aim of this research is as follows:

1. To determine the feasibility of using gelatin as a substrate for hyaluronidase.
2. To determine the optimum pH for the enzyme acting upon a gelatin substrate.
3. To determine qualitatively and quantitatively if reducing sugars are present in the substrate after action by the enzyme.

The work on hyaluronidase is relatively new. However it is the most extensively studies mucolytic enzyme.

The Preparation Of Alkyl Chlorobenzoates And Their Application As Alcohol Derivatives, Robert Gudwin Johnson

Bachelors’ Theses

While engaged in the preparation of alcohol derivatives during a course in the characterization of organic compounds, the writer noticed in a chemical catalog that various chlorobenzoyl chlorides are now available commercially. Since many of the present reagents for the preparation of alcohol derivatives are deficient in at least one respect, it seemed to be a worthwhile project to prepare alkyl chlorobenzoates by the ·action of these substituted benzoyl chlorides on alcohols. A study of the physical properties of these chlorobenzoates would then be undertaken to determine the feasibility of using them as alcohol derivatives.

A search of the literature …

The Effect Of Certain Reagents On The Consolute Temperature Of The Phenol And Water System, Donna Louise Bleck

Bachelors’ Theses

The phenol water system was one of the first of a number of partially miscible liquid systems to be investigated. The mutual solubility has been determined for the pure system at various temperatures and pressures by many investigators.

Particularly interesting is the effect of the addition of a third substance on the mutual solubility of this system.

It is, the purpose of this work to determine the effect of certain previously untried substances on the mutual solubility of phenol and water by investigation of the critical solution temperature before and after their addition. The compounds used have been selected on …

Study Of Ether Soluble Factor From Urine Capable Of Reducing The Viscosity Of Gelatin, Lawrence H. Docta

Bachelors’ Theses

Leonard Driss reported that urine contained an ether soluble factor capable of reducing the viscosity of a gelatin solution.

This thesis intends to further investigate-this point · and to determine the nature of the viscosity reducing factor. Also, to further investigate the phenomena reported by Driss that male urines obtained soon after emission had a greater amount of this viscosity reducing factor than normal urine.

The Electrolytic Deposition Of Uranium From Aqeous Solution Containing Various Percentages Of Organic Reducing Agents, Joseph J. Leben

Bachelors’ Theses

Until recently uranium was not a much sought after metal. It had few uses, and it was considered merely as a by-product of radium production. The Second World War and the advent of atomic energy altered the uranium picture completely, so that uranium is now more sought after than gold and other precious metals.

With this demand for uranium there came also a need for a more simple method of isolating the metal. The following work is an attempt at solving this need for a simple and cheap method of producing uranium

The Distribution Coefficient Of Acetic Acid Between Bromobenzene And Water And The Distribution Coefficient Of Acetic Acid Between Cyclohexene And Water, John D. Steppler

Bachelors’ Theses

It is the purpose of this thesis to give a brief outline of the study of distribution coefficients and to determine the distribution coefficient of acetic acid between water and bromobenzene, and the distribution coefficient of acetic acid between cyclohexene and water. There has been a great deal of work done in distribution ratios. However the research possibilities in this field are very extensive and the work done by the author is but a small part of what can be done in this field.

Polarization And Transition In Commercial Waxes Using Dielectric Constant And Dissipation Factor Data, Lewis B. Mcclellan

Bachelors’ Theses

Many of the commercial waxes are of unknown chemical composition. Those for which the composition has been fairly well established, still contain elements of unknown character. It is the purpose or this thesis to investigate the possibility of gaining knowledge or the composition and configuration or wax molecules from a study of the dielectric constant and dissipation factor.

The first part or the thesis is devoted to the principles of dielectrics and dielectric properties. This is to acquaint the reader with the theory of dielectric phenomena. The second part deals with the experimental work and the method employed in measuring …

Qualitative Reactions Of Chlorine On Titaniferous Slags At Elevated Temperatures Without The Use Of Catalysts, Richard K. Brehm

Bachelors’ Theses

For the past twenty-five centuries man's mastery of nature has been based largely on his ability to produce and work iron into implements, tools, and machines. This has been due to the relatively simple task of converting abundant iron ores to metallic iron. No other common metal has the durability of iron. Aluminum has sometimes been called the second most important structural metal, but its extreme softness, even in its alloys, and low melting point have barred it from heavy duty applications. Pound for pound it is stronger than iron, but its bulk is a disadvantage.

Regardless of its durability …

The Determination Of Hydrogen Numbers Of Various Olefins And Unsaturated Fatty Acids Using A Semi-Micro Hydrogenation Apparatus And To Compare These Numbers To Their Iodine Numbers, Francis J. Romeo

Bachelors’ Theses

Many important industrial applications for fatty acids and their derivatives are based on the ability of the unsaturated members of a series to combine with other molecules through the reactivity of their double bonds.

Investigators for quite some time have sought means and methods for determining the number and the position of these double bonds and correlating the results as a means of identification for the unsaturation in fats and oils. Iodine addition to the double bond is employed generally in analytical work as a measure of unsaturation and as a means of separating acids of varying degrees of unsaturation. …

An Investigation Of Haury And Ballard's Method Of Production Of Diketones, Daniel Mathew Fabishak

Bachelors’ Theses

This investigation was undertaken to determine the feasibility of preparing certain diketones by the new and novel method proposed by Haury and Ballard.

The Synthesis And Physical Properties Of Several Aromatic Fluorides, Charles J. Basso

Bachelors’ Theses

Since the advent of the Manhattan Project, more attention is being focused on fluorine compounds. Most of the inorganic fluorides are well known and are being used daily in industry. However, the realm of organic fluorides has not been investi­gated much up until recently, mainly because of the lack of safe and efficient fluorination reactions. Only within the last twenty-five years have reliable, indirect methods of fluorination been developed.

The purpose of this thesis is to give an outline of the most important fluorination processes, speaking of laboratory scale operations. The author illustrates the synthesis of an· aromatic fluoride by …

The Influence Of Certain Factors In Urine On The Viscosity Of Gelatin, Leonard Driss

Bachelors’ Theses

The aims of this thesis are four-fold:

1. To determine the apparent proteolytic activity of normal urine from day to day.
2. To determine the apparent proteolytic activity of a sample of 8-12 hours after emission.
3. To determine whether the ether extracts of normal urine possess apparent proteolytic activity.
4. To determine the effect of hyaluronidase on the viscosity of gelatin.

A Comparative Study Of Some Dehydrating And Infiltrating Agents, Albin A. Sheputa

Bachelors’ Theses

During the past two decades methods in biological technique have been constantly improved and perfected. However, the choice of a universally satisfactory dehydrating and infiltrating agent has been much debated and various well known authorities in the field of biological technique have left this problem unsolved to the complete satisfaction of all concerned.

The Influence Of Certain Factors In Urine On The Viscosity Of Gelatin, Leonard Driss

Bachelors’ Theses

After reading the Masters Thesis of Mr. Herman L. Karl, the writer became interested in this problem and then took · up the study of the proteolytic activity of normal urine. Mr. Karl worked on the urine of pregnant women. Using gela­tin as a substrate, he hoped to find a difference in prote­olytic activity between the urine of a woman pregnant with a male fetus and the urine of a woman pregnant with a female fetus. His results were not conclusive but suggested that the problem of proteolytic action of urine should be studied under normal conditions.

An Improved Confirmatory Test For Arsenic, Mary Ellen Mckennan

Bachelors’ Theses

As any student in freshman chemistry can tell you, many of the tests in qualitative analysis do not work as well as they should. Of course, for a particular student, this may be more his fault than the fault of the test, but in some cases the test itself is to blame. One of these cases is the confirmatory test for arsenic. There is a combination of difficulties which make it hard to detect arsenic by the present method used in qualitative analysis so it is the hope of the author to determine exactly what these difficulties are, find some …

The Synthesis And Physical Properties Of A Few Unsymmetrically Substituted Ethanes, Gerald R. Aldrich

Bachelors’ Theses

The writer's interest was aroused in the synthesis of organic fluorides while taking a course in Organic Preparations. The fact that fluorine chemistry was something relatively recent made the topic especially appealing. While the chloro, bromo, and iodo derivatives of most of the homologous series had been prepared, many of the fluorine compounds had not. Previous research had disclosed the asymmetrical diaryl ethanes possessed peculiar properties - to mention one, fluorescence. It was proposed that a few of the asymmetrical diaryl ethanes having fluorine and chlorine substituted on the ring in various positions with respect to one another be prepared …

The Identification Of Various Alkyl Halides Through Formation Of Quaternary Ammonium Salts, John L. Canning

Bachelors’ Theses

Within the field of the characterization of organic compounds the preparation of suitable derivatives of the compound to be identified is the final process of the laboratory analysis. When the unknown is of such chemical nature that the preparation of derivatives is difficult or impossible the identification is not too satisfactory. This is often the case when the unknown is an alkyl halide. At present the identification of many of these compounds depends exclusively upon an examination of the physical constants.

It is the purpose of this paper to investigate the possibility of preparing quaternary ammonium compounds by treating the …

An Investigation Of Sundry Reactions For Application As Confirmatory Tests In Qualitative Analysis, Patricia Ann Lillis

Bachelors’ Theses

Is the present "scheme" of Qualitative analysis satisfactory? For many years the answer has been, No ! In the present ”scheme” it has frequently been necessary to strike a compromise between accuracy and simplicity. One solution to the problem can be found in the availability of a number of specific reagents, one for each substance to be identified, giving unmistakable tests and positive results. It would greater simplify the situation if a single inorganic salt could be used as a reagent for all the metallic ions.

One of the most successful reagents used was potassium mercuric thiocyanate. The water soluble …

An Investigation Of Several Electrode Combinations In An Effort To Find A Suitable Combination For The Potentiometric Titration Of Fluorides Using Cerous Nitrate As The Titrating Reagent, Miriam Knoebel

Bachelors’ Theses

The increasing commercial and industrial interest in compounds of fluorine as important industrial materials, and the importance of the relation of fluorides in water and foods to human health, has necessitated an accurate and rapid method for the quantitative determination of fluorides.