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Estimates on the prevalence of propylene glycol allergy range from 0.8% (10% propylene glycol in aqueous solution) to 3.5% (30% propylene glycol in aqueous solution). [ 70 ] [ 71 ] [ 72 ] The North American Contact Dermatitis Group (NACDG) data from 1996 to 2006 showed that the most common site for propylene glycol contact dermatitis was the ...
A History of the Dow Chemical Physics Lab: The Freedom to be Creative. M. Dekker. ISBN 0-8247-8097-3. E. Ned Brandt. (2003). Growth Company: Dow Chemical's First Century. Michigan State University Press. ISBN 0-87013-426-4 online book review; Don Whitehead and Max Dendermonde. (1968). The Dow Story: The History of the Dow Chemical Co. McGraw-Hill.
Polypropylene glycol is produced by ring-opening polymerization of propylene oxide. The initiator is an alcohol and the catalyst a base, usually potassium hydroxide. When the initiator is ethylene glycol or water the polymer is linear. With a multifunctional initiator like glycerine, pentaerythritol or sorbitol the polymer branches out ...
The World Health Organization issued an alert on Monday warning drugmakers of five contaminated batches of propylene glycol, an ingredient used in medicinal syrups, that appear to have been ...
Propylene glycol methyl ether acetate (PGMEA, 1-methoxy-2-propanol acetate) is a P-type glycol ether used in inks, coatings, and cleaners. It is sold by Dow Chemical under the name Dowanol PMA, [ 3 ] by Shell Chemical under the name methyl proxitol acetate, [ 4 ] [ 5 ] and by Eastman under the name PM Acetate.
When an aqueous solution of propylene glycol in a cooling or heating system develops a reddish or black color, this indicates that iron in the system is corroding significantly. In the absence of inhibitors, propylene glycol can react with oxygen and metal ions, generating various compounds including organic acids (e.g., formic, oxalic, acetic).
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