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What makes Pine-Sol cleaners water soluble?

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NeoPTLD

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Pine sole is a viscous, transparent amber liquid containing approximately 10% pine oil. It is soluble in water.

Pine oil is like any oil and insoluble in water.

What allows pine oil to be in solution in pine-sol rather than an emulsion and why does the final product dissolve in water?
 
CycloWizard said:
As Gibsons said, the alcohols will behave as surfactants to improve the solubility.
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There's so little alcohol that I doubt it makes any difference. Isopropyl is pretty similar in solvency to ethanol. At such a small amount, I can't see it making much difference. You don't find salad oil much more soluble in beer (5-7% alc) vs water.
 
Another vote for "it's probably the propan-2-ol", acting as a cosolvent. It's quite a common cosolvent because it is cheap.

The conversion of free fatty acids to ethoxylates (or the use of ethoxylates) will also enhance solubility.
 
It's the combination of isopropanol (2-propanol) and the non-ionic surfactants, alkyl alcohol ethoxylates. Possibly lauryl alcohol ethoxylates, the same ones found in most shampoos, but don't wash your hair with Pine-Sol.
If you would like to read more about it here's a patent on Stable Liquid Cleaners containing Pine Oil: http://www.freepatentsonline.com/5866534.pdf
 
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