[RASMB] CsCl density

[Jacob Lebowitz]

Hi All,

Vinograd's lab found from the International Critical Tables the 
linear relationship p=10.860n-13.4974 for CsCl density aqueous 
solutions vs refractive index. You can get reasonably close to the 
density of CsCl you want by assuming additive volumes of water and 
solid CsCl. The density of CsCl is 3.99. Select the final volume of 
the solution you want and set up simultaneous equations for additive 
volumes and additive mass of water plus CsCl.  This will allow you to 
determine the weight of CsCl needed for a chosen density that you 
want and the volume of water you need to add to the CsCl.  Once you 
have this bulk solution that is close to what you need you can 
measure the refractive index or use a density meter for density 
determination to four places.

Jack

At 11:49 AM 9/14/2007, falltl4 wrote:
>Hi all, I'm trying to find a method for making up a solution of 
>known density of CsCl in Deionized Water.  I've only been able to 
>find CsCl equations with many other additives, but I'm just using 
>them for creating a neutral density environment for polystyrene beads.
>
>Thanks a lot
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