Chemistry

#alltheingredients: Isopropyl stearate (IPS) – an isopropyl ester

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Isopropyl stearate (IPS) is an isopropyl ester related to isopropyl myristate (IPM), isopropyl palmitate (IPP), and isopropyl isostearate (IPIS). It’s a low viscosity, non-greasy, hydrophobic (water-hating) ester derived from stearic acid. To learn more about these isopropyl esters, check out this post on isomers and this post on comparing isopropyl esters! Click here to learn...

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#alltheingredients: Isopropyl palmitate (IPP) – an isopropyl ester, updated 2021

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Isopropyl palmitate is related to isopropyl myristate (IPM), the difference being IPP is derived from palmitic fatty acid (C16) and IPM is derived from myristic fatty acid (C14). (Click here for the chemistry of esters!) Since we’re a little more familiar with IPM, we’ll end up contrasting and comparing the two at some point, so...

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Better crafting through chemistry: Esters – isopropyl myristate (IPM) – updated, 2021

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Original post from 2009!  If you’ve been following this blog for any length of time, you’ll know I’m a fan of isopropyl myristate or IPM. I use it primarily as a dry or astringent emollient to reduce the greasy feeling of other oils in a lotion or lotion bar. You can use it in large...

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Esters: Isopropyl esters

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Isopropyl esters, like isopropyl myristate (IPM), are those based on isopropyl alcohol and a fatty acid. Esters are created by combining an alcohol and an acid, usually a fatty alcohol, like cetyl alcohol, Cetearyl alcohol, stearyl alcohol, or myristyl alcohol, and a fatty acid, like lauric acid, myristic acid, palmitic acid, and stearic acid. Isopropyl esters,...

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Chemistry: Isomers and how they relate to the isopropyl esters…

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I thought I’d share a little about the chemistry of isomers before we get into isopropyl esters, like isopropyl myristate, isopropyl palmitate, isopropyl stearate, and isopropyl isostearate. I have to point out that you don’t need to know all of this to enjoy making products or using ingredients like isopropyl myristate (IPM) or isopropyl palmitate (IPP)...

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