Polyethylene glycol 400 |
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Background
Polyethylene glycols (PEGs) are used extensively as solvent vehicles in
cosmetics, industrial products and technical industries. The molecular
weights vary from 200 to 7500. At room temperature, the low molecular weigth
(200 - 700) are liquids, whereas the consistency of higher molecular PEGs
(1000 - 7500) varies from soft to hard. PEGs are hydrophilic and easily
bind many products becaused of theric special helical configuration. PEGs
are therfore used as a vehicle for many drugs. PEGs (especially PEG 400)
facilitate the skin penetration of many substances and are therfore often
used in topical preparations. PEGs are not subject ot bacterial deterioration.
Peroxidases may be formed during storage, especially at higher temperatures
or in daylight, so storage conditions should preferably be a cool environment
protected from direct sunlight.
Synonyms Polyethylene glycol 400
Uses
Carbowax
Cross-Reactions
Unusual Reactions
References
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