Re: Water-soluble molecules with large molar masses

Once you're past the molar mass 10000 mark, you're in macromolecule territory. 
That means either biological macromolecules -- carbohydrates or proteins -- or 
synthetic polymers.

Several synthetic polymers can be made with a functional group that is 
sufficiently hydrophilic to give good water solubility. Two that spring to mind 
are poly (vinyl alcohol) and poly (acrylic acid). These do not have a specific 
molar mass, but can be purchased with a variety of specifications for molar mass 
average and distribution.

Many large carbohydrates or proteins are sufficiently hydrophilic to be quite 
water soluble. Gelatin springs to mind, or even starch. Some of these have quite 
specific molar masses, others may have some variability of structure.

To get the details of solubility properties, you need to look up polymer/
macromolecule handbooks, or perhaps even suppliers' specification sheets. They 
tend to be more complicated and less clearly defined thatn the solubilities of 
smaller molecular species.

Response:

Re: Water-soluble molecules with large molar masses
Hi,

I am looking for molecules having very large molar masses, which are 
soluble in water.  I would also appreciate it if I could get to know what 
would be the solubility for each molecule listed...   Thank you for your 
time, sincerely, John   P.S.: Please reply to:    jtulpan@hotmail.com


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Hi - I'd recommend making a visit to your undergrad library. 
Ask the librarians to help you find a copy of the