CARBOWAX™ Methoxypolyethylene Glycols (MPEGs) are a family of water-soluble linear polymers formed by the addition reaction of ethylene oxide. The generalized formula for methoxypolyethylene glycol is:

CH3-(OCH2CH2)n-OH

where "n" is the average number of repeating oxyethylene groups.

MPEG is designated by a number that represents its average molecular weight. For example, CARBOWAX™ MPEG 550 consists of a distribution of polymers of varying molecular weights with an average of 550, which corresponds to an approximate average number of repeating oxyethylene groups ("n") of 13.

CARBOWAX™ Methoxypolyethylene Glycols are available in average molecular weights ranging from 350 to 5000.

This wide range of products provides flexibility in choosing properties to meet the requirements of many different applications.

CARBOWAX™ Methoxypolyethylene Glycols†
CARBOWAX™ MPEG CTFA(a)/INCI(b)
Nomenclature		 Range of Average Molecular Weight Appearance at 27°C Available Physical Form
350 PEG-6 Methyl Ether 335 to 365 Clear Viscous Liquid Liquid


†Typical properties, not to be construed as specifications.
(a)Cosmetics, Toiletries and Fragrances Association
(b)International Nomenclature Cosmetic Ingredient


®™* Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow