Difference between revisions of "Polyethylene glycol"

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== Description ==
 
== Description ==
  
A water-soluble polymer available in a range of viscosities from a honey-like solution to a hard wax-like block. Polyethylene glycols are used commercially as solvents for [http://cameo.mfa.org/materials/fullrecord.asp?name=dye dyes], [http://cameo.mfa.org/materials/fullrecord.asp?name=natural%20resin natural resins], and [http://cameo.mfa.org/materials/fullrecord.asp?name=protein proteins]. They are also used as plasticizers for [http://cameo.mfa.org/materials/fullrecord.asp?name=casein casein], [http://cameo.mfa.org/materials/fullrecord.asp?name=gelatin gelatin], [http://cameo.mfa.org/materials/fullrecord.asp?name=glue glue], [http://cameo.mfa.org/materials/fullrecord.asp?name=zein zein], [http://cameo.mfa.org/materials/fullrecord.asp?name=cork cork], and [http://cameo.mfa.org/materials/fullrecord.asp?name=ink inks]. [http://cameo.mfa.org/materials/fullrecord.asp?name=Carbowax%C2%AE Carbowax®] formulations have also been used to slowly replaced water in water-logged wood providing structural support while decreasing wetness. They, however, remain somewhat tacky and can retain dirt that darkens and discolors the artifact.
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A water-soluble polymer available in a range of viscosities from a honey-like solution to a hard wax-like block. Polyethylene glycols are used commercially as solvents for [[dye|dyes]], [[natural%20resin|natural resins]], and [[protein|proteins]]. They are also used as plasticizers for [[casein|casein]], [[gelatin|gelatin]], [[glue|glue]], [[zein|zein]], [[cork|cork]], and [[ink|inks]]. [[Carbowax%C2%AE|Carbowax®]] formulations have also been used to slowly replaced water in water-logged wood providing structural support while decreasing wetness. They, however, remain somewhat tacky and can retain dirt that darkens and discolors the artifact.
  
 
== Synonyms and Related Terms ==
 
== Synonyms and Related Terms ==

Revision as of 10:26, 10 May 2016

Description

A water-soluble polymer available in a range of viscosities from a honey-like solution to a hard wax-like block. Polyethylene glycols are used commercially as solvents for dyes, natural resins, and proteins. They are also used as plasticizers for casein, gelatin, glue, zein, cork, and inks. Carbowax® formulations have also been used to slowly replaced water in water-logged wood providing structural support while decreasing wetness. They, however, remain somewhat tacky and can retain dirt that darkens and discolors the artifact.

Synonyms and Related Terms

PEG; poly(oxyethylene); polyglycol; polyether glycol; Carbowax® [Union Carbide]; PEG [Shell Chemical]; Polyethylenglykol (Deut.); macrogol (Fr.); polyetylenglykol (Sven.); polietilenglicol (Esp.)

Other Properties

Average molecular weights range from 200-6000

Soluble or miscible with water and most organic solvents.

Heat stable, inert, low vapor pressure.

Composition HOCH2(CH2OCH2)nCH2OH
CAS 25322-68-3

Hazards and Safety

Combustible. Non-toxic (used in many foods).

Comparisons

General Characteristics of Polymers

Physical Properties for Selected Thermoplastic Resins


Sources Checked for Data in Record

  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • Hermann Kuhn, Conservation and Restoration of Works of Art and Antiquities, Butterworths, London, 1986
  • Wikipedia, the free encyclopedia, at http://www.wikipedia.com Comment: dyeshttp://en.wikipedia.org/wiki/Polyethylene_glycol (Accessed Feb. 10, 2006)
  • Gordon Hanlon, contributed information, 1998

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