[billnotgatez]

Carboxymethyl cellulose
http://en.wikipedia.org/wiki/Carboxymethyl_cellulose

Has anyone used this stuff

I am playing with it for pottery purposes and put some in water to see what it does and it clumped rather than dispersed. I guess that is to be expected but it surprised me.
Any other experiences would be gladly received.

In the meantime I will read further.