Subject: Re: Waterglass - Sodium Silicate - firesafe ???

From: Martin Eastburn <[email-masked]>
Date: 30 Mar 1997 17:39:21 GMT

I looked and looked - doesn't look good. Lots of other uses,
Mostly in the glass industry.  Other Silicates are fireproof.

I hope the attached text comes next.
Martin

Looking at Chem Expo - Industry News/Chemical Profile - Sodium Silicates (group) do not list 
Fire Retardant as a use unless it is in a small percentage and is lumped in misc.

"Waterglass vs. Calcium Silicate"
by John Chipura
This is a wood treatment shoot-out. Waterglass is a controversial ingredient in violin
finishing. Chipura makes a case for using calcium silicate instead.

 http://www.spectrumglass.com/
Has waterglass Registered name.

 Environmental Annual Report 1995  [More Like This] 
                 URL: http://www.akzonobel.com/environ/envirall.htm 
                 Summary: The coatings industry has launched Coatings Care®, which is
                 fundamentally Responsible Care® adapted to the needs of the coatings
                 industry. Representatives of the Gillingham location also helped formulate the
                 CIA Guidance on Responsible Care® Management Systems for Health,
                 Safety and the Environment, and the Gillingham site continues to be a leader in
                 the CIA's CHEMSAFE Emergency.

Fireproof cements Hoechst K 12 and K 14 are potassium silicate cements with corresponding chemical 
resistance but increased thermal resistance. Since they harden chemically and at elevated temperatures 
also form a ceramic bond, these fireproof cements have the advantage over fireclay mortars that they 
can be used in the construction of selfsupporting brickwork even at normal temperatures.

 New Advanced Fireproof Material  [More Like This] 
                 URL: http://www.sirim.my/~rnd/pro_tech/silicate.html 
                 Summary: Calcium Silicate developed from siliceous raw materials such as
                 silica sand and rice husk ash has good insulation properties and is fire
                 resistant. Silica sand or rice husk ash, which contains more than 97% silica
                 content, is an excellent starting material for manufacturing this new material
                 called xonotlite.