Do you have any idea how either of these (Sodium Silicate or Silicon Dioxide) will effect the electrical performance of circuit cards? -----Original Message----- From: <Rudy Sedlak> [mailto:[log in to unmask]] Sent: Tuesday, December 11, 2001 1:21 PM To: [log in to unmask] Subject: Re: [TN] Sodium Silicate Contamination Jennifer: You probably did not discover Sodium Silcate...which, in small particles and quantities is rapidly neutralized by the Carbon Dioxide in air to a form of Hydrated Silicon Dioxide.....which is actually known as "Silicic Acid", but is about as acidic as Carbon Dioxide in air.. The truth is that the stuff in small quantities is essentially harmless to human beings. I would ignore it. If you want to clean it up, probably the only reasonable way is to use a simple mild detergent solution. If you want to remove every last atom of Silicon Dioxide you would have to use some VERY hazardous chemicals. My advice: Have a nice holiday...if people want to feel like they have "done something to cure the problem"...wash the floor. Rudy Sedlak RD Chemical Company ---------------------------------------------------------------------------- ----- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------- ----- --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------