[Rich]

I'm not sure where to start looking for a source to buy potassium alum.  I need a lot of it to start, a few hundred pounds at least.  Of course I'd rather buy from the source to get it cheap, but again I don't know much about the market for this kind of stuff.  Can the stuff be bought cheaper from overseas?  I'm in the US if that makes a difference.

Thanks

[Cedric]

Are you talking about that kind of product?
http://www.sigmaaldrich.com/catalog/search/ProductDetail/RIEDEL/12625

[Rich]

Thanks Cedric
I sent them an email to see if they sell it in the form I need - they advertise powder form, I need larger size chunks or blocks.   I'll see what they say...

[qiugang]

sir,

we can supply the product of POTASSIUM ALUMINUM SULFATE DODECAHYDRATE (POTASSIUM ALUM) from China, we are manufacturer, and the iron content is below 20ppm,

please let me know if you are interested in our this grade product? waiting for your reply soon.

thanks, Qiu Gang(qiugang1999@hotmail.com)
qiugang@sinochem.com