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Title: What is the difference between propylene glycol and propylene glycol monostearate? Post by: michaud94 on Feb 19, 2013 Merlin's Feline: Looks like you know what you're talking about...so in your opinion, would propylene glycol used in a skin care cream be likely to clog pores? How about the monostearate? Title: What is the difference between propylene glycol and propylene glycol monostearate? Post by: datasian on Feb 19, 2013 propylene glycol is a dihydroxy compound
1,2 propane diol CH2OH-CHOH-CH3 while the monosteartae is a monoester of proylene glycol witht he organic acid stearic acid ( C18) CH3(CH2)16 -COOH water is lost between the acid and one of the OH groups of propylene glycol and you get the monoester CH2OH-CH-CH3 I O I CO-(CH2)16-CH3 Because of the long CH containing tail and the presense of the OH on the other end this monoester is an amphipath and can be used to emulsify and help solubilize compounds into a water based mixture because it can bring the phases together as it has a polar and non-polar end |