[graphene]

May I know why the ethanol and brine helps in emulsion breaking of polar and non-polar solvent?

[billnotgatez]

please read forum rules
no cross postings
I deleted the other 2 posts that were repeats
I hope you get an answer here

[Arkcon]

It really does depend on the actual chemical properties of the emulsion's components.  Hard to know weather you mean an industrial emulsion, or a food stuff.  But there's the beginnings of an insight here: http://en.wikipedia.org/wiki/Emulsion#Instability  If you knew the components of the emulsion, you could see how the brine or ethanol would help mediate some of the mechanisms detailed there.

[Kanivers]

Ethanol is bi polar isn't it?  It is a solvent for positive and negative ions.

[Arkcon]

Ethanol is bi polar isn't it?

I don't believe you're using the correct term for the phenomena you're trying to describe.

It is a solvent for positive and negative ions.

No.

[Kanivers]

Polar and non polar?

[Arkcon]

Polar and non polar?

That's correct.  And I suppose being two things, bi- is an appropriate prefix.  But I believe bipolar is an adjective reserved for a psychological disorder.