Chemistry Commons^™

A Study Of The Cooling Curve Of Several Waxes And Various Binary Mixtures Of These Waxes, Casimir A. Smyk

Bachelors’ Theses

A cooling curve may be defined as a graphic representation of the relationship which exists in the elapse of time and temperature of a substance surrounded by a medium of a temperature lower than itself. There is no heat added to the substance and the only heat taken away from the substance is by means of the surrounding medium. It is time plotted against temperature. Time on the x-axis and temperature on the y-axis. Many methods have been mentioned for the determination of purity and identification of a wax. But the methods are not standardized because of the length and …

The Effect Of Halowax On Lubricating Oil And Grease: The Instability Of Aluminum Grease In Regard To Viscosity, Nathan Smith

Bachelors’ Theses

This thesis is concerned with lubricating oils and solid lubricants. The initial problem in this research was the effect of Halowax 1012, 1013, and 1014 on lubricating oil. During the investigation, however, it was observed that the addition of Halowax to the lubricating oils formed a false gel at ordinary temperature, the consistency depending on the percentage of Halowax added. The result no longer favored continued research since the lubricating oil was made impractical. The problem then lent itself to the influence of Halowax on solid lubricants, in particular lubricating greases. It was on this phase of the investigation that …

Wax Analysis With Special Reference To Montan, Spermaceti, And Chinese Insect Wax, Margaret M. Plonsker, Margaret E. Seippel

Bachelors’ Theses

The presentation of this thesis under joint authorship finds its justification in the fact that much of the experimental work, though performed individually, is of such a nature as to warrant a unified description. In this way the reader is afforded a better representation and clearer conception of the problem, and a substantial guide for further investigation. Though much work has been done in the field of wax analysis, little is known of the higher fatty acids and alcohols of many of the waxes. Their isolation has been infrequent, and few if any of their derivatives have been formed. It …

Tungsten Plating, Allen J. Hipp

Bachelors’ Theses

During the past twenty years electro-plating has undergone a thorough transformation from an art into a science in which physical chemistry is playing an important role. The factors which govern the plating of copper, nickel and brass are well known. Recently new processes have been found for the plating of cadmium and chromium. Metals which give a bright surface and which will take a polish are in great demand. Nickel and chromium answer these requirements, and are used commercially for a variety of uses. Chromium has been a remarkable success as a plated surface because it is both a beautiful, …

The Reaction Between Aluminum And A Germicidal Soap Contaiming Mercuric Iodide, Gordon C. Mueller

Bachelors’ Theses

The verification of previous research concerning the action of mercuric halides on aluminum, together with a study of the action of soaps containing these halides, is the purpose and privilege of this paper.

A Study Of The Deposition Of Wax In A Wax Emulsion By Electricity, Howard Mcdonald

Bachelors’ Theses

The basis of this thesis resides in an experiment performed by Dr. J.R. Koch of Marquette University during the summer of 1931. Dr. Koch poured some liquid emulsion into an "H" tube and attached the electrodes to a source of DC current. A few days later he noticed the wax bad separated from the emulsion and had passed to the positive electrode leaving the solution surrounding the negative electrode clear.

The Quantitative Estimation Of Solvents And Non-Solvents As Found In Lacquer Preparations, Harry Katzowsky

Bachelors’ Theses

The study of solvents and non-solvents in lacquers entails a great deal of work which is unable to be covered in so small a space of time, and although this thesis attempts to understand the use of these solvents and non-solvents, it is just a mere uncovering of much more interesting work able to be done with further analysis in this field.

A Study Of Methods For Determining The Solvents And Diluents Used In Lacquers, William O'Donnell

Bachelors’ Theses

The subject matter of this thesis deals with methods of analysis for lacquer solvents and diluents. Lacquers are a comparatively new product and a big field of investigation is open to anyone. This subject as taken bee use it offered a special appeal to be able to investigate something that was new and practical.

The Decomposition Of Mixed Ethers And A Quantitative Scheme For The Determination Of A Quaternary Mixture Of Alcohols And Iodides, Ellsworth H. Stock

Bachelors’ Theses

To introduce some recent advances covering the decomposition of mixed ethers and the quantitative scheme for quaternary mixtures of alcohols and iodides is the privilege and responsibility of this paper. The first part of the paper deals with the oxidation, and quantitative determination of binary mixtures of alcohols. The last half covers the separation of the alcohols from the iodides, the decomposition of the mixed ethers, and the complete outline for determining the amount of alcohols resulting from the decomposition. Tables, graphs, and drawings have been included in the text, because the complete understanding of the method depends to some …

An Investigation Of Methods Used In Mine Analysis Of Iron Ores From The Nashwauk, Minnesota District, Walter F. Joyce

Bachelors’ Theses

In the mining industry like in any other industry the products of the mines and the raw materials are constantly analyzed. Three different analyses are made, on crude ore, on the concentrates and on the cargo. Highest permissible error is allowed on crude ore and mine samples.

The Development Of A Quantitative Scheme For The Separation Of Quaternary Mixtures Of Alkyl Halides And Alcohols, Edward Joseph Pfeifer

Bachelors’ Theses

Organic chemistry offers a large field for quantitative investigation. The nature of many organic compounds makes for difficult analysis. The separation of simple mixtures is oftentimes a problem. The work undertaken in this thesis is of special interest because it combines several phases of chemistry, in the investigation of a problem, which by its very existence, suggests the need for solution.

The Electrodeposition Of Chromium And Iron Alloy, Duane J. Windau

Bachelors’ Theses

The plating of stainless steel, or more correctly, the plating of iron chromium alloys is among the recent projects undertaken by the steel industry to improve its products. Publications on this industrial endeavor are few, although undoubtedly there is considerable work going on. The reason for the sudden interest in stainless steel may be traced to the interesting and valuable properties of chromium steels and especially the stainless steels. However, articles made entirely of stainless steel are expensive and therefore cheaper substitutes have been considered, names the plating of a base metal with chrom-iron alloys. This project will be of …

Throwing Power Of A Chromium Plating Bath Containing Hydrofluoric Acid Instead Of Sulfphuric Acid, Clarence E. Barta

Bachelors’ Theses

Chromium was discovered in 1797 by a Frence Chemist named Vauquelin who gave it its name from a Greek word for color because of its variety of colors which its various compounds show. The electrode-deposition of Chromium from a Chromium acid solution has been an accomplished feature for the past century but it has only been in the past few years that the mechanism of the process has been sufficiently understood to permit its commercial application.

Harding and Barrows state that it is possible to ob­tain satisfactory Chromium deposits from Chromic acid baths containing compounds other than sulfuric acid which …

A Study Of The Inhibiting Value Of Various Separators On The Plating Of Lead, Lawrence E. Ehrnst

Bachelors’ Theses

This thesis was suggested by the work of Mr. B. J. Pozorski and Mr. W. Adashek. Mr. Pozorski investigated the inhibiting qualities of various separators when placed between two platinum electrodes in a copper sulfate solution. Mr. Adashek worked on the efficiency of various lead plating solutions using lead electrodes and electrlyes containing soluble lead salts. Combining the work of these men, the author is investigating the prohibitive plating properties of various separator using a lead plating solution. By so doing, the investigation has a closer relationship to the actual performance of the storage battery .

Determination Of The Adsorptive Power Of Charcoal For Caffein In Coffee Infusions, James G. Lappa

Bachelors’ Theses

In recent years, the American public has been confronted with considerable advertising on the part of the large coffee merchants with regard to the reputed harmful effects of the caffein contained in coffee. The attitude taken against this constituent of coffee, was of course, determined by the form of coffee sold by the respective merchants, those handling the ordinary form stressing the importance of correct brewing in preventing any nervous disorders or loss of sleep, and those selling the decaffeinized brand blaming the caffein as the cause. There is considerable disagreement between authorities on this question,since most knowledge of the …

Current Efficiency Of Various Chromium Plating Baths, Clarence R. Hanus

Bachelors’ Theses

Chromium is one of the hardest metals and when properly plated gives a beautiful lustre. It has a fine resistance to oxidizing agents and does not tarnish up to 600°C. Oxygen has little effect on chromium plate, making the latter invaluable for embellishments and decorative purposes.

However, there are difficulties to be overcome in chromium plating, such as,

1. Poor throwing power.
2. Formation of trivalent chromium.
3. Evolution of hydrogen at the cathode.

It has been found that current efficiency is low, resulting in low throwing power, uneven plating and waste of electric energy.

In this thesis it will be attempted to …

The Effect Of Fruit Acids On Aluminum, Glenore M. Dugan

Bachelors’ Theses

Aluminum has been used in cooking utensils for about thirty years and is still the favorite material employed. There is no disagreeable taste, odor or discoloration discernible from its use.

There have been many experiments to prove that aluminum does not depreciate the quality of the food cooked in it. It does, however, add itself to the acidic and basic foods cooked therein. The amount taken up by neutral foods is negligible.

For experimental purposes, fruit juices were chosen as the attacking substances and the strips of aluminum were of the quality used in ordinary cooking utensils, not cast aluminum.

A New Method For Determining The Rate Of Evaporation And The Relative Humidity, Willliam T. Shaw

Bachelors’ Theses

The presence of water vapor in the air is of the greatest importance to organic life. Animal and vegetable life is entirely dependent on water which very largely reaches the the earth through precipitation of water vapor held in the atmosphere. Not only does the water vapor in the air supply organic life with the life-giving fluid, but it also significantly modifies the climatic conditions of any region. Even in temperate climates such as in southern Australia, the air is often so dry that ordinary wooden furniture and articles of wood cannot be used because the air in this condition …

The Extraction Of Waxes And Wax Mixtures By Means Of Common Organic Solvents, Bernard J. Finley

Bachelors’ Theses

This work was performed with the intention of giving some information of the solubility of the more common waxes, by means of extraction with several commercial solvents. Besides the individual waxes, various mixtures of waxes were also used to determine the effect of the mixtures on the extractability.

Determinations are also made to find the extractable matter in a commercial furniture polish and shellac. The acid, saponification and iodine values of the polish and shellac are also found.

Very little work seems to have been done on the accurate determination of percentage of extractable matter in waxes and mixtures of …

The Influence Of A Halowax Oil On The Viscosity Of Lubricating Oil At Various Temperature, Clarence J. Riordan

Bachelors’ Theses

Halowax Oil is used as a.filler in plastic compounds, on wood as an insecticide against termites, and the Petroleum industry finds it a very good valve lubricant in internal combustion engines and a solvent for tarry residues which deposit on combustion chambers. Due to its low viscosity and very low congealing point it would therefore seem logical to investigate this further with the idea of using Halogenated oils as winter lubricants for automobile engines. The work naturally suggested further study, such as its effect on corrosion of steel, aluminum, iron and copper, the flash and fire points, viscosity at various …

The Viscosity Of Liquids, Mary Bede Brielmaier

Bachelors’ Theses

This thesis contains a review of the principal methods of determining the viscosity of liquids, with an experimental investigation of the oscillating disk method.

The Effect Of Alternating Current On The Rectifying Properties Of Metallic Salts In Contact With Metals, William Howard Schumaker

Bachelors’ Theses

However much may be said regarding the advantages of direct current, there is little doubt at present, that from the viewpoint of power generation and transmission, alternating current has considerable advantages over direct current. While such is the case, there is, and probably always will be, a need for direct current. According to our present development, this direct current is indispensable in wireless work, radio, and in the laboratory test shops, where it is necessary to work with very sensitive meters, which are inexpensive and easy enough to secure for direct current measurements, but which necessitates an elaborate and costly …

Solubility Curves Of Various Commercial Waxes In Several Organic Solvents, Lawson Joseph Ford

Bachelors’ Theses

The introduction contained herein is- merely meant to acquaint the reader with the common waxes. The subject matter itself has been purposely condensed. For more detailed accounts references are made to well known authorities throughout.

Current Efficiency Of The Commercial Chromium Plating Bath, John Kaczmarowski

Bachelors’ Theses

The subject matter of this thesis deals with the character of the chromium plate, the amount of hydrogen liberated at the cathode, the weight of the chromium deposited, and the cathode efficiency.

This investigation was made for the purpose of aiding .further research work to increase the cathode efficiency of the chromium plating bath. If greater efficiency can be obtained, then, chromium, as nickel, can be plated on small articles in rotating barrels.

The Spray Test In Chromium-Plated Brass, Paul Siegel

Bachelors’ Theses

For a great many years, the science of chromium plating has been investigated by eminent research workers in the domain of chemistry. The problem of deposition was solved some years ago by Carveth and Curry of Cornell University. At the present time there has accumulated such a vast mass of data upon the subject that it does not lie in the power of a single individual to obtain a truly thorough and comprehensive study of the entire problem in all of its aspects.

Substitution Of Hydrofluoric Acid For Sulphuric Acid In Chromium Plating, Leonard Schulze

Bachelors’ Theses

Chromium plating or the electrodeposition of chromium from chromic acid baths has been an accomplished fact for almost a century. However, it has not been until the last few years that considerable attributive information has been published to make the mechanism of the process sufficiently understood to permit its commercial operation.¹ Most of the scientific information published on chromium plating thus far is general there being very little specific information revealed as yet. Material, as shall be referred to occasionally, may be read about its early successful applications stressing the unusual properties, advantages, interests, and activities but very little …

The Solubility Of Certain Salts In Ethyl Iodide And The Miscibility Of Organic Liquids In Ethylene Bromide And Ethyl Bromide, Theodore F.X. Tribovii

Bachelors’ Theses

The problem is solely one of scientific interest. Ethyl iodide is commonly Known as an organic compound which is a very poor solvent, For this reason salts were chosen, which resembled atomically ethyl iodide. That is salts containing iodine. It would be commonly suspected that salts of this nature would, if any, be soluble in ethyl iodide.

A Volumetric Method Of Chromium Determination With Mercurous Nitrate, Gerald W. Lawton

Bachelors’ Theses

Boncyk in his research on potentiometric titrations, made the observation that apparently mercurous nitrate could be used to titrate chromic acid solution. He used potassium iodide as an outside indicator and found that a slight excess of mercurous nitrate gave a gray precipitate with potassium iodide solution. The precipitate seemed to indicate the end point, or the neutralization of the chromic acid; a slight excess of the mercurous nitrate causing the immediate formation of a gray precipitate. Not knowing the exact normality and purity of the solutions used, he could not ascertain whether the gray was the true end point, …

A Study Of The Plating Prohibitive Properties Of Various Separators, Bruno J. Pozorski

Bachelors’ Theses

The problem of this thesis is to study the plating prohibitive properties of the various materials commonly used in the manufacturing of separators, and to indicate which material would be most serviceable and feasible in a separator. At one time positives and negatives were kept not more than 0.25 inches apart, with the idea of reducing the intervening layers of electrolyte, and, therefore, the internal resistance of the cell, as much as possible. It was, however, found that the output could actually be increased by putting the plates at greater distances, the fact being that the larger bulk of solution …

Studies Of Respiration And Carbohydrate Changes In The Potato At 3 Degrees C And 20 Degrees C, Hermann I. Karl

Bachelors’ Theses

The purpose of this paper was to determine the effect which different factors would have on the respiration and the sugar content of potatoes. It is known that the sugar content of a potato may be increased with the lowering of the temperature. It is also known that with this lowering of temperature the respiration is also lowered. What other factors will effect the respiration and the sugar content of the potato and to what extent is the question to be answered.

Although this problem may seem of little importance because sugar .1e not wanted in a potato, yet the …