Calcium Sulfoaluminate is a product of cement setting and is often
made use of in expansive cement mixes. Because of this, it is
difficult if not impossible to obtain the chemical directly... it must
be produced by setting. So, no chemical/industrial supply houses will
carry this chemical. What you would get if they did would be a
"brick". They would only carry the chemicals necessary to produce it.
So, with that in mind...
Reference 1 has a brief overview of how to produce Calcium
The directory of reference 2 lets you access a number of patents
related to expansive cement mixtures, which is what Calcium
Sulfoaluminate is used in. These can give you a good idea of how to
manufacture this material, and/or who can manufacture it for you.
Calcium Sulfoaluminate also goes by the name of "Klein's compound".
This gentleman's thesis (Ref. 3) covers its production (The thesis
title is "The Synthesis and Hydration of Klein's Compound,
4CaO-3Al2O3-SO3"). Sorry, the thesis is not available online.
However, the page does contain his email address and a department
name. The thesis appears to be in english.
Finally, this site (Ref. 4) gives an excellent explanation of the
chemical reaction needed to obtain Calcium Sulfoaluminate.
I hope that this was what your looking for. If not, be sure to
request a clarification.
1) The hydration of portland cement:
2) Patents: Expansive cements and non-shrinking mortars
3) Risų National Laboratory, Staff, Jesper Knudsen
4) Solid State Inorganic Chemistry - Inorganic Cements
On www.google.com: "calcium sulfoaluminate"
On www.alltheweb.com: "calcium sulfoaluminate"
On Google: "Klein's compound"
On All The Web: "Klein's compound" manufacture
Clarification of Answer by
15 Nov 2002 15:50 PST
I'm sorry that you were disappointed with your answer. In the future,
please allow myself or another researcher enough time to respond
before rating the answer.
The main point that I tried to make in my answer was that calcium
sulfoaluminate is not directly purchasable. It is a chemical product
of a reaction in cement mixtures. The result of these mixtures is a
solid chunk of material. Because I could not answer the "where" to
obtain, the answer was an attempt at the "how" in your question
Keep in mind too that Calcium Sulfaluminate is of variable composition
(because it is a hydrated ceramic), so purification becomes a question
what exactly you want... it is not a pure material, it's a ceramic
"phase" of variable composition (specifically, of three different
oxides [plus water]). If you were to try to purchase it, it would be
like trying to purchase "steel". Steels... although all composed of
iron and carbon... come in innumerable different varieties, and even
those vary between manufacturers.
To respond to your question of how to obtain it, I would have to say
that getting a mixture of expansive cement mix and allowing it to set
would be your best bet. I know that that sounds sarcastic, but I don't
mean it in that way.
Again, I'm sorry you were disappointed with the answer.