---------------------- multipart/alternative attachment John, I'm glad your eyes are better than mine. I guess it's an "old age" kind of thing!:-) At 04:15 PM 8/17/05, you wrote: >As to the first point, Susan, NO!! (Thankfully!) To quote a Ph.D. >in the field (I'm more food/flavor chemistry): > > >Cyanoacrylate glues contain the group H2C=CH-CN: Where the = >represents a double bond between two carbons and there is a triple >bond between the carbon and nitrogen of the CN. CN is the 'cyano' >group, and a three-carbon chain with a double bond next to another >type of multiple bond (or some other form of electron rich group >such as a radical or anion) is an 'acrylic' group -- the combination >gives a relatively high reactivity to the compounds and allows them >to polymerize like a plastic. Many non-toxic compounds contain both >types of groups, and many medicines have cyano groups. Along with >this group, there are other chemicals and can be other chains >attached to that cyanoacrylate group in place of one or more of the hydrogens. > >There is NO, NONE, NADA cyanide released on curing these glues and >hardening. There are some obnoxious fumes released -- some of them >just parts that boil out from the heat of the curing reaction. BUT, >whenever an organic chemical that contains nitrogen is burned, some >cyanogen/hydrogen cyanide is released. This happens with tobacco, >meat, veggies, fireplace wood, etc. This release is worst when there >is not enough oxygen present in the burning zone to ensure complete >combustion -- so if there is a lot of smoke formation, there is more >likelyhood of cyanide formation. > >Sorry if that's more chemistry than you wanted, but I think it makes >the point. Watch out for smoking rags, etc! > >To the "kicker" issue, I assume that's an accelerant? Anything with >water (a VERY WEAK lye solution would be better) is going to >work. Elmer's may just be getting in the way of the >polymerization. How is the smell irritating (acrid, ammonia, >etc)? That may give some indication of what's going on. > >John Delmore ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/6d/f4/8f/ef/attachment.htm ---------------------- multipart/alternative attachment--
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