Talk:Cyanoacrylate

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If you have a problem with superglue,AKA Cyanoacrylate:

Someone has inserted superglue in my car locks of my car, I was wondering if there is any dissolvent in which I can soak my locks instead of paying some ridiculas amount to install new locks any help would be welcolmed From Jan N.Z

I did a little googling, and found the following advice over on http://www.howstuffworks.com/question695.htm : "By the way, if you happen to find yourself in a super-sticky situation, a little bit of acetone nail-polish remover helps to unglue fingers." So perhaps squirting a little nail-polish remover into the lock will help. Note, I have never tried this myself, so I make no guarantees. Bryan 06:14 Oct 1, 2002 (UTC)

Contents

[edit] "Burning point"?

I think it's supposed to be "flashpoint"? Plus, most sources I've seen says it's either at 85°C or "more than 85"°C.

It seems like the term should be flashpoint, so I can change that. As to what the flashpoint is, the International Programme on Chemical Safety (associated with the World Health Organization) has pages on Ethyl and Methyl 2-Cyanoacrylate putting the flashpoints at 75°C and 79°C, respectively. The pages are here for ethyl and methyl. I would presume that those flashpoints can be considered representative of cyanoacrylate in general. wikinick 16:42, 22 August 2005 (UTC)
How about octyl-2-cyanoacrylate, which according to the Straight Dope article in "external links" is the form used surgically? ~~ N (t/c) 21:16, 22 August 2005 (UTC)
I can't correct for the specific flash or fire points of this substance, but the above commentator seems unclear on the concepts of flash and fire points. From the Wikipedia article on "Flash Point":

"The flash point of a flammable liquid is the lowest temperature at which it can form an ignitable mixture with oxygen. At this temperature the vapor may cease to burn when the source of ignition is removed. A slightly higher temperature, the fire point, is defined at which the vapor continues to burn after being ignited. Neither of these parameters is related to the temperatures of the ignition source or of the burning liquid, which are much higher. The flash point is often used as one descriptive characteristic of liquid fuel, but it is also used to describe liquids that are not used intentionally as fuels."

[edit] Health risks

What are the health risks cyanocrylate poses to people? I'm curious because a superglue tube accidentaly felt into a toaster once, and I had a hint of how a chemical attack feels like (not pretty).

[edit] Medical?

[ I very much doubt the veracity of "Its major polymerization byproduct, acetic acid, is biocompatible. Cyanoacrylates are used in orthopedic surgery to glue metal appliances to bone. They are often used, for example, to glue artificial hip appliances to femurs and pelvic girdles." Acetic acid is a byproduct of acetoxy RTV silicones, not cyanoacrylates (CAs). As CAs have poor moisture resistance, they are probably not used as structural adhesives inside the human body, unless meant to be temporary.

In reviewing some abstracts via Google, it looks like there are some problems with N-butyl-2-cyanoacrylate (NBCA), a new-generation cyanoacrylate derivative, and there are some details on the use of "cyanoacrylate glue applied on both deep and superficial tissues" that seem to be slightly negative on animal testing. I don't know much about the field, so I'm just trying to throw out some info, but I personally doubt anyone's using such adhesives to hold hip appliances to femurs. Harmil 20:53, 31 May 2005 (UTC)

[edit] Acetic acid

Someone got very confused. Acetic acid is a byproduct from the cure of some RTV silicones (acetoxy types) - nothing to do with cyanoacrylate adhesives, which do not really have any cure byproducts. --borborygmus 19:02, 2005 Jun 1 (UTC)


[edit] Blatent copywrite violation

The vast majority of this text is ripped straight from Cecil Adams Straightdope. http://www.straightdope.com/mailbag/msuperglue.html

Looks like it's just the new material added most recently by an anon IP. I'll double-check and revert it this evening when I've got a little more time. Bryan 14:25, 25 July 2005 (UTC)
I've marked as] copyvio and am copying the non-copyvio text to Cyanoacrylate/Temp. ~~ N (t/c) 21:17, 6 August 2005 (UTC)
Drat, looks like getting back to this slipped my mind. :) Instead of copy-and-pasting the old version to a /temp page, deleting the current page, and then restoring the /temp version, I've just reverted the copyvio addition. This article has a long contribution history that would be lost in such a procedure. Bryan 04:56, 7 August 2005 (UTC)
Sorry, I didn't know about that bit of policy. It's too bad we can't easily delete versions from the history. ~~ N (t/c) 05:04, 7 August 2005 (UTC)
Policy's a little vague on how to deal with this, IIRC, because copyright law is itself a little vague on this matter. Specific versions of an article can be deleted, but in a bit of a kludgy way - what has to be done is to delete the article entirely and then undelete every version except the ones that shouldn't be there. I am paranoid about deleting articles, though, stemming from an incident where I thought I'd somehow permanently wiped an article's history out of existence (I hadn't, but anxiety like that leaves a mark :). I guess if you think it's necessary I'll take a crack at it. Bryan 07:07, 7 August 2005 (UTC)
No, policy says leaving it in the history is fine if the copyright holder doesn't complain. ~~ N (t/c) 07:18, 7 August 2005 (UTC)

[edit] Family

I just deleted references to family and a brother-in-law in the article. Does anyone know why they were in there in the first place? The paragraph is still written in first person, if someone else wants to change it. Emfraser 17:43, 4 August 2005 (UTC)

[edit] History

History of Loctite Corperation Aparently what we know as superglue today was actually invented by Vernon Krieble. Maybe super glue should be separate from Cyanoacrylate? Curretly it is forwarded to this page.

Only if there are non-cyanoacrylate super-glue-type compounds. If not, they're the exact same thing. We don't have separate pages for Prozac and fluoxetine. ~~ N (t/c) 20:40, 7 August 2005 (UTC)
"Superglue" is a brand name for cyanoacrylate adhesives. Vernon Krieble invented aerobic adhesives (i.e. threadlockers), not CAs. --borborygmus 13:12, 2005 August 26 (UTC)

[edit] Random trivia

Not suitable for inclusion in the article, but anyone who wants to get a chuckle out of it can do it here:

In the TNG episode "The Child", a type of radiation which causes rapid growth is said to be produced by "certain cyanoacrylates". Clearly some writer in need of a cool-sounding chemical came up with superglue! Andrew Rodland

Health Warning! Sniffing Super Glue is Extremely Dangerous and in some cases couses Death.

For amusement value only: a fellow I knew I college was fond of saying that cyanoacrylates will bond any two substances instantly and permanently provided at least one of them is human skin. Septegram 17:26, 7 September 2006 (UTC)

[edit] Medical? Where does it go?

If cyanoacrylate is used to stop bleeding, certainly some of it will remain under the skin once the wound heals? Does it stay where it was put indefinately or does it get taken up by the body and disposed of somehow? —Ben FrantzDale 13:25, 2 June 2006 (UTC)

I once had a small puncture wound treated with cyanoacrylate, and after a few days it peeled off all in one piece like a scab. —Keenan Pepper 22:37, 4 June 2006 (UTC)

[edit] Bonding

Does superglue form a chemical bond with the surfaces on which it adheres, or is it just a mechanical bond? (Or does it depend on the material?) It obviously doesn't stick well to nylon since that's what the bottles are always made of. —Ben FrantzDale 13:25, 2 June 2006 (UTC)

[edit] Strength of today's product vs. 20, 30 years ago

Having tried several brands of superglue lately with less than happy results, I have the strong feeling that the product is far weaker than the superglue sold in the 1970s. Back then there were a lot of stories regarding users bonding all their fingers together against the surface to be glued, and having this bond instantly. Is it possible (as I suspect) that the product today has been weakened to avoid this kind of mishap? Is this something that can be documented?  ProhibitOnions  (T) 12:55, 24 September 2006 (UTC)

I suspect as much. Despite all the warnings, whenever I end up superglued to myself, I never have any difficuly pulling the bond apart. It only ever hurts if I get it on something hairy like my arm. Pulling apart two fingertips has never been a problem. Maybe the warnings are for older people with weaker skin. boffy_b 14:30, 18 November 2006 (UTC)

[edit] Article lacks citations

Hi all. This article fails to cite its sources per WP:REF. I therefore added the tag for this on the article page. Not citing sources is substandard for Wikipedia articles. Peace, CyberAnth 18:33, 8 October 2006 (UTC)

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