How much water is soluble in vegetable oil at a given temperature and pressure, however low it is?

Answer 1

Vegetable oil can contain quite a bit of water (which can be hard to get rid off), despite the generally apolar nature of glycerine-trialkylates. I seem to recall water contents up to maybe 5%.

This would also mean that you cannot dissolve any meaningful amount of (extra) water in commercial vegetable oil since there is already some inside.

Answer 2

If you just have water an vegetable oil, the solubility is practically zero. However, a little bit of detergent will make oil soluble in water. Soaps have one end that is soluble in water and one end that is soluble in oils. The oil-soluble ends of several molecules come together and trap the oil in little "bubbles" while the other end is dissolved in water.

Answer 3

Very, very little; water is a polar substance (possesses a dipole moment), while vegetable oil is non-polar. The two do not mix well at all, even when you shake or stir it enough to completely emulsify it (evenly distribute tiny droplets of one within the other); when you say "dissolve," it suggests that one substance disperses throughout another on its own, and oil and water simply don't mix that way -- the polar bonds (plus hydrogen bonds) between each water molecule tend to hold the droplets of water together if oil is in the majority, and if water is in the majority, the surface tension of the water tends to hold the oil in discrete droplets in suspension. The only way to get them to mix at all well is to add an emulsifier, something kind of soap-like with polar and non-polar ends to it, to bind the two together. The lecithin in egg yolk and dry mustard powder are both common emulsifiers used in cooking.

Answer 4

each vegetable oil would have different solibility in water, and water in vegetable oil.

There will be some solubility, however small. Most qualitative reports of solubility would be "insoluble", so you may need to look for sullpiers, such as Croda. You can do the search.

Answer 5

zero.
if you mean how much oil soluble in water , i think its zero too or close .

high school chemistry 12 years away now but i had the idea that solution is the dispersment of a substance (like salt or oil in this case) into another less dense substance ( like water)
so maybe you need to rephrase.

Answer 6

None, water is hydrophobic and oil is hydrophobic.

Means water is a polar substance and oil is a non-polar substance, then, they can't mix by any means.

But if you need a trick, add soap, sake, and they mix, at least for some time, cause soap lower surface tension, that helps on mixing.