[papercreters] using waterglass

Looks like a good answer is given already.

Here is where to buy      http://www.chemistrystore.com/
http://www.chemistrystore.com/product.cgi?group=100590&product=100591  << sodium silicate 1 gal $14.25

(803) 926-5385     1133 Walter Price St Cayce, SC 29033

Potassium silicate info  below-- and MSDS on sodium silicate at bottom

My experience:  Water glass is a jelly like substance that is already formulated and ready to go.  I was given a jar of it,,,looked like egg whites. I painted it on my paper+lime plaster on the steel drum I had made into a big flower planter.  It has sat in rain for  5+ years in wet PacNW...and protects the  plaster well.  (usually paper+lime a Chinese formula I have shared before is going to be used indoors.)    I wanted to see if I could get it to harden enough to limestone to not get soggy while outside.  and the waterglass did work.

the company does sell 1 gallon.. not sure you need a full drum to experiment. Used to be avaialble at pharmacies.. but prolly not now.. call one and see?

you can buy online $10 for a quart ( for testing it may be worth it)
http://us.ebid.net/for-sale/sodium-silicate-40-solution-500ml-water-glass-69338136.htm?from=googleshop_us&gclid=CL7fy4_uq7MCFcN_QgodMk4AVw

Here is another version:  Research this also--
Everkote by Edison CO  sells another version but only commercially-- here is a description:
belpow is the MSDS info on a TX company that sells it.. maybe not  i gal tho.
HOW DO EverKote 300 POTASSIUM SILICATE COATINGS WORK?
EverKote 300's potassium silicate binder is produced by fusing potassium carbonate with silica at high
temperature. The result is a soluble silicate, which can be dissolved in water to produce a  liquid
"waterglass".
Although soluble silicates can be air dried to form a film, maximum water resistance, bond strength and
long-term durability depend on chemical reactions with the substrate or added catalysts. Substrates with
which silicates can react include:
Calcium salts, typically found in Portland cement, lime and calcareous natural stones such as
limestone and marble  Silica, typically present in siliceous sandstones, silica sand, mortars, concrete and glass
Ceramics, including brick and terra cotta
Iron and other metals
When EverKote 300 is applied to suitable substrates, it penetrates and reacts to form a hard, insoluble
silicate. It can also increase substrate hardness, particularly in cementitious materials. When applied to
materials containing Portland cement, the silicate reacts with incompletely hydrated cement particles,
converting unreacted calcium hydroxide (CaOH2 or hydrated lime) to harder calcium silicate hydrates.

1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION
MSDS NUMBER : M35887                                                   09-06-01
SODIUM SILICATE LIQUID SILICEOUS (ALL GRADES)
Occidental Chemical Corporation, Occidental Tower
5005 LBJ Freeway, P.O. Box 809050
Dallas, TX  75380            (972) 404-3800
1-800-733-3665  OR  972-404-3228
1-800-699-4970
1-800-752-5151
Adhesives; pulp and paper; deinking; detergents;
gels; catalysts; soil stabilization; textiles
Sodium silicate liquid, siliceous
Na2O.xSiO2 (x = or > 2.30 by wt.)
Liquid sodium silicate
Water glass


--
Charmaine

Charmaine Taylor/Publishing & Elk River Press
PO Box 375 Cutten CA 95534
www.papercrete.com
 
 Robert Heinlein (1907-1988) "There is no worse tyranny than to force a man to pay for what he does not want merely because you think it would be good for him."

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