A procedure for the identification of commonly used waxes in admixture: Samuel Zweig and Abraham Taub, Columbia University N. Y.
✍ Scribed by R.H.O.
- Book ID
- 104132434
- Publisher
- Elsevier Science
- Year
- 1940
- Tongue
- English
- Weight
- 60 KB
- Volume
- 229
- Category
- Article
- ISSN
- 0016-0032
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✦ Synopsis
A Procedure for the Identification of Commonly Used Waxes in
Admixture.--SAMUEL ZWEIG and ABRAHAM TAUB, Columbia University, N. Y., presented a paper on this subject at the recent meeting of the American Chemical Society. The increasing world consumption of waxes and their extensive utilization in commercial polishes and other wax containing products has brought to the fore the need for a definite procedure of analysis of waxes in admixture, a problem which hitherto has proved decidedly complex because of the qualitative similarity and natural variations of these substances. The method proposed in the paper utilizes a correlation of pertinent physical and chemical constants with a quantitative separation of waxes into groups of homologous compounds and a study of their. properties. The study is limited to the common waxes: spermaceti, carnauba, candelilla, beeswax, montan, and ozokerite. Certain allied substances such as cetyl alcohol, stearic acid, and rosin are included to indicate where they might interfere in the analysis. The precipitation temperatures of the waxes in n-butyl alcohol and n-heptane are proposed as criteria for the detection of carnauba and ozokerite in a mixture of waxes. The quantitative separation involves the isolation of an ethanol-soluble fraction, high and low molecular weight fatty acids, hydrocarbons, and high and low molecular weight fatty alcohols. R. H. O.