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An Investigation Of The Colorimetric Methods For The Determination Of Fluorine By The Zirconium Alizarin Sulfonate Method, William Lewis Break

Masters Theses

"There has been a need for a rapid and an accurate method for the determination of fluorine in its compounds. Both gravimetric and volumetric methods have been studied, but both methods were time consuming or inaccurate or both. Colorimetric methods had been studied before F. Richter developed his method but none had been reported to be as satisfactory as his method. This method was investigated because it was thought that F. Richter's method would be a satisfactory colorimetric determination for fluorine in its compounds"--Introduction, page 1.

The Synthesis And Certain Chemical Properties Of Several Aromatic Fluorides, Horst G. Schneider

Bachelors’ Theses

The preparation of organic fluorides, until only recently, had been seriously curtailed not only because of the difficulty experienced in their synthesis, but also due to the lack of information with regard to their physical and chemical properties. With the investigation of their characteristics, their great importance was for the first time fully realized. A concerted search was made for new modes of their preparation. That this search was rewarded is shown in part by the synthesis of several aromatic fluorides as a portion of this thesis.

Studies In The Determination Of Iodine In Soils Organic Materials, And Waters, Russell T. Lundell

Theses and Dissertations

A summary of the literature on the nutritional value of iodine in the diet of various forms of life is given. The majority of evidence indicates that iodine is an essential element in plant and animal nutrition. It functions particularly in animal metabolism in the form of thyroxine. The occurrence of iodine in a nature has been briefly discussed. Investigations made in this regard indicate iodine to be almost universally distributed in very minute amounts. Most iodine salts are soluble in water and their distribution is affected by water movements. Results of iodine determinations made during the course of this …

Microradiography With Metal Powders, Wallace Kluck

Bachelors’ Theses

Microradiography is a comparatively recent development in the X-ray field. The term applies to the analysis of a thin specimen by photographing it with X-rays and subsequently enlarging the photograph to bring out minute structural elements. A microradiograph has several advantages over a photomicrograph. First of all it goes beyond the surface and reveals the internal structure of the specimen, a more important advantage at least as concerns this paper is the ability of the microradiograph to enable one to accurately determine the chemical elements making up the specimen.

The Effect Of Some Electrolytes On The Critical Solution Temperature Of The Phenol-Water System, Donald Gerald Leavitt

Bachelors’ Theses

A classical example of a system of liquids exhibiting partial miscibility is the phenol-water system. One of the earliest binary systems of this type to be Investigated, it has been the subject of much research and experimentation during the past sixty years. Its critical solution temperature has been determined by a multitude of investigators, the effect of a third component upon the system has been studied and many generalizations concerning partially miscible binary systems have been derived from these undertakings.

The studies which have been carried on regarding this system have been chiefly of theoretical interest, although in recent years …

A Study Of The Lassaigne Test For Nitrogen, Marion Ann Stout

Bachelors’ Theses

The elementary analysis of an organic compound is a determining factor in the characterization of the compound. The problem of this analysis was first encountered in organic characterization class where it was impossible to obtain a satisfactory test for nitrogen using the Lassaigne Method. It is the purpose of this thesis to testout the Lassaigne method under various conditions and to determine a set of conditions hereby the test will be positive.

The Synthesis And Some Physical Properties Of Certain Aromatic Fluorides, John W. Weldon

Bachelors’ Theses

The late discovery of methods of introduction of fluorine into organic compounds has retarded to some extent the commercial use of organic fluorides. The indirect methods used also prevented general preparation of fluorocompounds. However, the characteristic stability of many fluorine compounds has warranted both the preparation of numerous aromatic and aliphatic fluorides as well as a search for new methods of preparation. It 1s the purpose of this thesis to delineate the present methods of synthesis of aromatic fluorides and to show the influence of the substitution of fluorine on some of the physical properties of aromatic compounds.

The Determination Of Interfacial Tension Using Pendant Drop Method, Katherine Tellor

Bachelors’ Theses

Boundary tension is a measure of the free energy of a fluid interface. It is a term derived from the superficial analogy between the surface of a liquid and a stretched membrane. Just as the potential energy of a fluid mass in foot pound per pound is spoken of as a "head" in feet, so it is useful to speak of free energy of a fluid surface in ergs per square centimeter as a "tension" in dynes per centimeter.

The Electrodeposition Of Waxes From Emulsions, Richard Nebel

Bachelors’ Theses

At the beginning of the nineteenth century, electrochemistry became an established part of the science of chemistry. Volta believed in the existence of some definite relationship between chemical and electrical phenomena and his investigations led to the discovery of a means of converting chemical energy to electrical energy. His observations became the foundation upon which all modern electrochemistry is based. Volta alternated zinc and silver disks with paper soaked in salt water between each disk. This afforded a source of electrical energy which produced a current and became to be known as the Voltaic-pile.

The Effect Of Weak Acid On The Stability Of Burnishing Ink, Marcella Wamser

Bachelors’ Theses

By definition we find "An emulsion being a system containing two liquid phases, one of which is dispersed as globules in the other. That liquid which is broken up into globules is termed the dispersed phase, whilst the liquid surrounding the globules is known as the continuous phase or dispersing medium". If a small portion of benzene is poured into a large volume of water, it can be emulsified by simply shaking or agitating. Again, chloroform and water with shaking gives an emulsion.

Thermochemical Studies Of Special Propellants., Frederick C. Damm

Electronic Theses and Dissertations

No abstract provided.

A Study Of Form And Content For A Laboratory Manual To Be Used By Students In General Chemistry Laboratory, Berne P. Broadbent

Theses and Dissertations

This investigation was carried out for general chemistry classes in which recitation and laboratory work are closely integrated and in which very close supervision is given to laboratory classes. Results indicate that there are fewer failures under these conditions if students do individual work. Students receiving grades of over 80% seem to work just as effectively in pairs as they do when working individually, but about 5% who fail when working in pairs could, apparently obtain grades above 60% if they did individual work. The formal full statement type of report is substantially more effective than the questionaire report as …

Van Slyke Determination Of Amino Acids In Beer And Malt, Rebecca Spilberg

Bachelors’ Theses

A change has been taking place in the brewing industry during the last few years. There has been a tendency to give up traditional methods of brewing for methods based on sound scientific principles. In line with this, the work of the chemical research laboratory has grown from almost nothing Until it now plays a role of vital importance to the industry.

The Determination Of Of Bromo Acid, Genevieve M. Stein

Bachelors’ Theses

The use of bromo acids in lipstick is comparatively recent. Since its use is so necessary to the modern lipstick in order to impart indelibility and staining power, the fact that bromo acid arouses a toxicity in the presence of castor oil in some individuals does not keep it from being one of the most important constituents of the stick. However, in order to keep the toxicity down to a minimum it is necessary to keep the type end amount of bromo acid under control. It is, therefore, highly important that a check on the amount of bromo acid be …

A Study Of The Reactions Of Anhydrous Hydrogen Fluoride On Organic Compounds, Daale Jones

Bachelors’ Theses

There are many uses for anhydrous hydrogen fluoride in the field of organic synthesis. The addition of hydrogen fluoride to a double bond is readily carried out at room temperature and provides a good starting point for mastering the special technique. It is widely used as one of our best · polymerizing agents. It has many uses as a catalyst in alkylation, acylation, Fries change and ring closure reactions. Due to its extreme reactivity a complete understanding of the material is necessary in order to handle it properly. The matter of technique in manipulation and carrying out reactions was one …

The Nitric Acid Oxidation Of 12-Hydroxystearic Acid, Henry K. Suzuki

Bachelors’ Theses

Although much work has been done on the oxidation of saturated fatty acids in the past, relatively little research on hydroxylated acids has been conducted.

This paper is a study of the oxidation of mono and poly hydroxy-fatty acids and was undertaken on the basis of Reid and Hall's report on the nitric acid oxidation of 12-hydroxystearic acid.

The Preparation Of Several N-Substituted Anthranilic Acids And A Determination Of Their Infrared Spectra In The Region From 2 To 9 Microns, Robert H. Chess

Tennessee State University Alumni Theses and Dissertations

No abstract provided.

The Preparation Of 2-Fluoroarsanilic Acid And An Attempt To Prepare 4-Fluorophenylarsonic Acid, Robert E. Shupe

Bachelors’ Theses

In the preparation of a fluorinated organic arsenical compound the writer has entered upon what may be untrodden ground. The difficulties were numerous and the press of time has made impossible for the present many of the investigations and modifications of method which would otherwise have been carried out

The Preparation Of 2-Fluoroarsanilic Acid And An Attempt To Prepare 4-Fluorophenylarsonic Acid, Robert E. Shupe

Bachelors’ Theses

In the preparation of a fluorinated organic arsenical compound the writer has entered upon what may be untrodden ground. The difficulties were numerous and the press of time has made impossible for the present many of the investigations and modifications of method which would otherwise have been carried out.

Malonic Acid Synthesis, Mary K. Hormuth

Bachelors’ Theses

The search for new organic compounds, the discovery of their proper­ ties and the utilization of them, both in the industrial and the biological field has always been the challenge to the organic and research chemist. In particular, the study of fatty acids and their related compounds has been the particular problem to not only the physiological chemist, but also the industrial chemist. The research in this direction has tremen­dous possibilities tor only the even carbon and normal chain acids have been isolated in nature. Here difficulty is often met when trying to establish and identify this type of acid …

Two Physical Methods For The Quantitative Determination Of One Component Of A Mixture Of Gases, Marvin M.D. Williams, Hugh O. Brown, William B. Dublin, Walter M. Boothby

Journal of the Minnesota Academy of Science

No abstract provided.

Dielectric Properties Of Various Organic Compounds, Joyce Elaine Eiling

Bachelors’ Theses

Condensers are widely used for many purposes. These devices are employed in one form or another in radio transmitting and allied industries such as television and amplifier circuits. They are used in automatic equipment, telephone, telegraph, and railway signal equipment as well as in condenser type motors. Condensers reduce sparking and arcing at contact relay points, switches, circuit breakers, time clocks, and thermostats. A vital part of a condenser is the dielectric. In present day condensers mineral oil is used extensively.

The purpose of this investigation is to study other organic compounds in an effort to find a good di …

The Influence Of Heat On Some Properties Of Triethanolamine Soaps, Hetty Ricker

Bachelors’ Theses

In modern times the field of chemistry has a broad scope and even a broader horizon. Yet for a girl the field is limited. One of the few industries in which she is capable and has a slight advantage is that of the cosmetic industry. In this field chemistry is used in the manufacture of lipsticks, shampoos, oils and creams. Research to improve these items is continually going on with a hope of finding cheaper and better products than those compounds already in use.

Occupational Chemical Hazards In Industries Of Louisville And Jefferson County., Morgan Brown Lewman

Electronic Theses and Dissertations

The facts and conclusions presented in the following pages are the results of figures gathered during two and one half years of work as an Industrial Hygiene Engineer for the Louisville and Jefferson County Health Department. The factual information was acquired from many sources including extensive reading to which reference is made of the more recent publications in the bibliography and also from correspondence and discussions with authorities in various fields. Much data was gained from "in-service training" received at the United States Public Health Service; Bureau of Industrial Hygiene, Bethesda, Maryland; University of Michigan; National Conference of Governmental Industrial …

A Study Of Factors Influencing The Hydrolysis Of Corn Amylopectin By Barley Malt Enzymes., Thelma Munsey Back 1918-2006

Electronic Theses and Dissertations

No abstract provided.

The Cleavage Of Cyclo-Beta-Diketones. I. Tetramethyl-1,3-Cyclobutanedione. Ii. Tetraphenyl-1,3-Cyclobutanedione., Garry Carlton Kitchens

LSU Historical Dissertations and Theses

No abstract provided.

Synthesis Of Dyes, Faith B. Cramer

Chemistry Honors Papers

This 14 page thesis examines the classification and preparation of dyes.

Calcium And Phosphorus Content Of Grasses At Different Stages Of Growth, G.F. Gastler, A.L. Moxon

Agricultural Experiment Station Chemistry Pamphlets (1943-1944)

The attached tables and graph show the calcium and phosphorus content of Western Wheat grass {Agropyron smithii) and Blue Grama grass (Bouteloua, gracilis) at different stages of growth. The percentages are calculated on an air dr-/ basis which would be comparable with the moisture content of very dry hay. Tne values, therefore, represent the approximate calcium and phosphorus levels in hay made from these grasses ~f they are cut at the stages indicated in the graph and tables.

A Study Of Some Dehydrating And Infiltrating Agents, Monica Hoefs

Bachelors’ Theses

The ethyl-alcohol-xylol series produces a hardening and shrinking of the tissues. It has long been criticized for this reason.

A Spectrophotometric Study Of The Solution Of Iodine In Aqueous Potassium Iodide, Joseph L. Schneider

Master's Theses

No abstract provided.