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pyroxylin(pīrŏk`sĭlĭn), partially nitrated cellulose (see nitrocellulosenitrocellulose,
nitric acid ester of cellulose (a glucose polymer). It is usually formed by the action of a mixture of nitric and sulfuric acids on purified cotton or wood pulp.
..... Click the link for more information. ). It is used in lacquers, plastics, and artificial leathers. Pyroxylin lacquers are made by dissolving pyroxylin in a mixture of volatile solvents and adding a plasticizer and a pigment or dye. Pyroxylin plastics are made by colloiding pyroxylin with large amounts of a plasticizer such as camphor; such plastics (e.g., celluloid) are highly flammable. Collodioncollodion
, solution of pyroxylin in a mixture of alcohol and ether. Upon exposure to air, the solvents evaporate, leaving a thin, colorless, elastic film on any surface upon which the collodion has been spread.
..... Click the link for more information. is a solution of pyroxylin in ether and ethanol.
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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
a nitrate ester of cellulose. Pyroxylins nos. 1 and 2, which differ in nitrogen content, are used commercially.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
[C12H16O6(NO3)4]x Any member of the group of commercially available nitrocelluloses that are used for properties other than their combustibility; the term is commonly used to identify products that are principally made from nitrocellulose, such as pyroxylin plastic or pyroxylin lacquer. Also known as collodion cotton; soluble guncotton; soluble nitrocellulose.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.