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 [ | + | 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|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 == | ||
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PEG; poly(oxyethylene); polyglycol; polyether glycol; Carbowax® [Union Carbide]; PEG [Shell Chemical]; Polyethylenglykol (Deut.); macrogol (Fr.); polyetylenglykol (Sven.); polietilenglicol (Esp.) | PEG; poly(oxyethylene); polyglycol; polyether glycol; Carbowax® [Union Carbide]; PEG [Shell Chemical]; Polyethylenglykol (Deut.); macrogol (Fr.); polyetylenglykol (Sven.); polietilenglicol (Esp.) | ||
| − | == | + | == Risks == |
| − | + | * Combustible. | |
| + | * Non-toxic (used in many foods). | ||
| + | * Cisco Chem: [http://www.ciscochem.com/assets/polyethylene-glycol-3350-sds.pdf SDS] | ||
| + | ==Physical and Chemical Properties== | ||
| − | Soluble or miscible with water and most organic solvents. | + | * Average molecular weights range from 200-6000 |
| − | + | * Soluble or miscible with water and most organic solvents. | |
| − | Heat stable, inert, low vapor pressure. | + | * Heat stable, inert, low vapor pressure. |
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| 25322-68-3 | | 25322-68-3 | ||
|} | |} | ||
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== Comparisons == | == Comparisons == | ||
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[[media:download_file_375.pdf|Physical Properties for Selected Thermoplastic Resins]] | [[media:download_file_375.pdf|Physical Properties for Selected Thermoplastic Resins]] | ||
| − | + | ==Resources and Citations== | |
| − | |||
| − | == | ||
* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 | * Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 | ||
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* Hermann Kuhn, ''Conservation and Restoration of Works of Art and Antiquities'', Butterworths, London, 1986 | * Hermann Kuhn, ''Conservation and Restoration of Works of Art and Antiquities'', Butterworths, London, 1986 | ||
| − | * Wikipedia | + | * Wikipedia: dyeshttp://en.wikipedia.org/wiki/Polyethylene_glycol (Accessed Feb. 10, 2006) |
* Gordon Hanlon, contributed information, 1998 | * Gordon Hanlon, contributed information, 1998 | ||
Latest revision as of 13:50, 4 August 2022
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.)
Risks
- Combustible.
- Non-toxic (used in many foods).
- Cisco Chem: SDS
Physical and Chemical 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 |
Comparisons
General Characteristics of Polymers
Physical Properties for Selected Thermoplastic Resins
Resources and Citations
- 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: dyeshttp://en.wikipedia.org/wiki/Polyethylene_glycol (Accessed Feb. 10, 2006)
- Gordon Hanlon, contributed information, 1998