1 reply to this topic

[murat.isler]

Hi,

 

I dont have chemical background but i want to find some subtances with specific properties for a project, is there any software or document to find subtances (mostly solvents)?

 

Maybe you may help me what kind of subtances do i need,

 

we have 3 subs let's assume them x,y,z

 

x and y missicble, y and z missicble, x and z immisicble.

 

when y-z solution mix with x, i want to get x-y solution and z (mostly released from solution)

also mass of X < Y (it will be better when rate of y/x is highest possible) and mass of Y < Z (also it will be better when rate of z/y is highest possible)

 

on the other hand, boiling point of the Z < X (high x/z rate is better) and the boiling point of Y > X ( high y/x rate is better)

 

Thank you in advance.

 

[MrShorty]

There are computer based and other resources for this sort of thing. As a student (I assume you are a student since this is in the student forum), do you have access to the DIPPR database and/or the Dortmund Databank through your school?

 

While resources like this may be useful for this sort of thing, they will usually require someone who understands phase equilibria well enough to sort through your requirements and the results of the database search to narrow it down to suitable candidates. Is there anyone in your chemistry and/or chemical engineering departments with whom you could consult on this question?

 

Perhaps:

x is water (MW 18, Tb 100 C)

y is ethylene glycol (MW ~60, Tb ~200 C)

z is hexane (MW ~80, Tb ~60 C)

 

Molecular Weight: x<y<z

boiling point: z<x<y