4452Re: alum, alum, and more alum.
- Dec 11, 2007Enid- I bought a 25 lb bucket of aluminum sulfate from McMaster Carr
several years ago. It's now about $30.
The only thing that I find is that after dissolving, it needs
straining from a little bit of sediment.
Is there some compelling reason that you need to use Potassium
I've just found several interesting articles on all the various forms
I think the only alum to avoid for use a mordant is Ammonium alum
and Pauli, Here are the Wiki articles in Spanish:
Hope this helps!
--- In Marbling@yahoogroups.com, "pauliquann" <pauliquann@...> wrote:
> --- In Marbling@yahoogroups.com, "enidadams" <enid@> wrote:
> > I ran out of alum and felt the great need to marble today, in this
> > cool, damp weather. I know better than to waste time and silk with
> > alum that has been sitting in solution several months, since colors
> > tend to be pale. I found my local farmer's co-op carries it in 4
> > bags for $7.50, saving both shipping costs and waiting. I have
> > using potassium aluminum sulphate and am hoping the size will last
> > longer without the addition of the potassium to accelerate growth
> > bacteria or otherwise interfere.
> > I couln't find anything on a local source in a search of the
> > but at least the archives kept me out of the grocery store and from
> > resorting to ammonium sulphate. I have to thank the pop-up ad that
> > mentioned garden centers for the idea. I hope my post helps
> > else with the urge to marble get right to it!
> > Enid Adams
> Dear Enid:
> WOW! is your post timely! I live in Mexico (moved to San Miguel de
> Allende, Mexico a year ago from NYC) and having supplies shipped here
> is so incredibly expensive, I still have a hard time getting over
> it!!!! So while I've discovered soda ash can be purchased at a pool
> supply store (I also shibori dye fabrics, hence the need for soda ash)
> I've been hoping to figure out another local or at least non-
> shipping source of alum. Marbling is my love! But expenses are making
> the relationship difficult.
> So could you explain your type of farmer's/garden center alum to me.
> Is it sold under the name Alum? We have a Home Depot an hour away and
> perhpas they might carry what you have described.
> Looking forward to your reply.
> Thank You,
> Paulette Quann
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