Preparation of Sulfur of High Purity

A method is described for producing sulfur that contains less than 1.3×10(−5) mole fraction of liquid-soluble, solid-insoluble impurities as determined by the freezing point depression. This corresponds to a purity of 99.999 mole percent. Many of the impurities, including organic matter, are removed...

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Detalles Bibliográficos
Autores principales: Murphy, Thomas J., Clabaugh, W. Stanley, Gilchrist, Raleigh
Formato: Online Artículo Texto
Lenguaje:English
Publicado: [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 1960
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5287091/
https://www.ncbi.nlm.nih.gov/pubmed/32196175
http://dx.doi.org/10.6028/jres.064A.036
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author Murphy, Thomas J.
Clabaugh, W. Stanley
Gilchrist, Raleigh
author_facet Murphy, Thomas J.
Clabaugh, W. Stanley
Gilchrist, Raleigh
author_sort Murphy, Thomas J.
collection PubMed
description A method is described for producing sulfur that contains less than 1.3×10(−5) mole fraction of liquid-soluble, solid-insoluble impurities as determined by the freezing point depression. This corresponds to a purity of 99.999 mole percent. Many of the impurities, including organic matter, are removed by oxidation with sulfuric and nitric acids. The nonvolatile impurities are removed on distilling the sulfur. The residual sulfuric acid is removed by a special extraction with distilled water. Methods are described for determining small amounts of the following impurities: Selenium, tellurium, arsenic, iron, carbon, sulfuric acid, and residue after ignition.
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spelling pubmed-52870912020-03-18 Preparation of Sulfur of High Purity Murphy, Thomas J. Clabaugh, W. Stanley Gilchrist, Raleigh J Res Natl Bur Stand A Phys Chem Article A method is described for producing sulfur that contains less than 1.3×10(−5) mole fraction of liquid-soluble, solid-insoluble impurities as determined by the freezing point depression. This corresponds to a purity of 99.999 mole percent. Many of the impurities, including organic matter, are removed by oxidation with sulfuric and nitric acids. The nonvolatile impurities are removed on distilling the sulfur. The residual sulfuric acid is removed by a special extraction with distilled water. Methods are described for determining small amounts of the following impurities: Selenium, tellurium, arsenic, iron, carbon, sulfuric acid, and residue after ignition. [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 1960 1960-08-01 /pmc/articles/PMC5287091/ /pubmed/32196175 http://dx.doi.org/10.6028/jres.064A.036 Text en https://creativecommons.org/publicdomain/zero/1.0/ The Journal of Research of the National Bureau of Standards Section A is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright.
spellingShingle Article
Murphy, Thomas J.
Clabaugh, W. Stanley
Gilchrist, Raleigh
Preparation of Sulfur of High Purity
title Preparation of Sulfur of High Purity
title_full Preparation of Sulfur of High Purity
title_fullStr Preparation of Sulfur of High Purity
title_full_unstemmed Preparation of Sulfur of High Purity
title_short Preparation of Sulfur of High Purity
title_sort preparation of sulfur of high purity
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5287091/
https://www.ncbi.nlm.nih.gov/pubmed/32196175
http://dx.doi.org/10.6028/jres.064A.036
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