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#296747 - 08/11/20 06:04 PM Super Glue toxicity
Chisel Offline
Veteran

Registered: 12/05/05
Posts: 1296
I have read a few times that super glue is used to close wounds. And that made me wonder about its toxicity.

What makes me ask the question is that an old blender in our kitchen has broke (a plastic piece chipped off) and I could not find the part anywhere. Then I thought of trying to glue it back before thinking of throwing the whole thing. Now the question is : this is a food processing appliance. Will it be safe enough for the food to come in contact with super glue ???

The glue will be sandwiched between the plastic and a steel sheet I am going to add for reinforcement. Contact with food will be minimal. But I am worried nevertheless.

What do you think ??

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#296748 - 08/11/20 06:13 PM Re: Super Glue toxicity [Re: Chisel]
Phaedrus Online   content
Carpal Tunnel

Registered: 04/28/10
Posts: 2719
Loc: Big Sky Country
I wouldn't worry about it at all but I don't really have any scientific evidence of it.
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“I'd rather have questions that cannot be answered than answers that can't be questioned.” —Richard Feynman

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#296749 - 08/11/20 06:46 PM Re: Super Glue toxicity [Re: Chisel]
dougwalkabout Offline
Crazy Canuck
Carpal Tunnel

Registered: 02/03/07
Posts: 2905
Loc: Alberta, Canada
My understanding is that medical tissue glue has a different chemical composition than hardware store super glue.

Food safe? Opinions are all over the place. Two manufacturers say it's not intended for food use (Loctite and Gorilla).

In normal situations, I probably wouldn't use it on food containers. Though I don't think it will kill you once cured.

In an emergency, I would if I needed to.

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#296750 - 08/11/20 07:24 PM Re: Super Glue toxicity [Re: Chisel]
M_a_x Offline
Old Hand

Registered: 08/16/02
Posts: 1095
Loc: Germany
Super glue is very brittle. It may not be up to the vibrations in the blender. In some plastic it may cause cracks.
Do you happen to have an idea what kind of plastic it is?
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#296751 - 08/11/20 08:24 PM Re: Super Glue toxicity [Re: Chisel]
chaosmagnet Offline
Sheriff
Carpal Tunnel

Registered: 12/03/09
Posts: 3400
Loc: USA
While I would not recommend that one deliberately ingest super glue, I would perform the repair and not worry about toxicity.

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#296752 - 08/11/20 09:37 PM Re: Super Glue toxicity [Re: Chisel]
RayW Offline
Addict

Registered: 12/06/01
Posts: 559
Loc: Orlando, FL
For a little light reading,

https://medlineplus.gov/ency/article/002894.htm

Essentially it can stick your skin together, don't get on your eye, and may cause skin sensitivity. It may also be used medically in the right situation. From what I understand it is basically a plastic when cured.

This link has more information than you ever want to know about cyanoacrylate adhesives.

https://en.m.wikipedia.org/wiki/Cyanoacrylate

While I personally would not worry about it using it to repair something that would be used in food preparation, I agree with Max that it might not be the best choice because once cured super glue is hard and has a low shear strength.

If you decide to use it for your repair use one of the higher grades of cyanoacrylate adhesive. The normal tubes in a blister pack are not very good, those are formulated for a long shelf life which degrades the strength of the glue.

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#296753 - 08/12/20 12:03 AM Re: Super Glue toxicity [Re: Chisel]
Hanscom Offline
Journeyman

Registered: 11/23/05
Posts: 84
One thing to note is that the food will be in contact with the glue for only a brief period of time. It's not like it will be in a container that has the patch in the refrigerator for days/weeks .

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#296755 - 08/12/20 12:57 AM Re: Super Glue toxicity [Re: Chisel]
dougwalkabout Offline
Crazy Canuck
Carpal Tunnel

Registered: 02/03/07
Posts: 2905
Loc: Alberta, Canada
Good point. A cooking vessel would be a very different level of exposure (if not for toxicity, then perhaps for flavour and aroma).

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#296756 - 08/12/20 06:31 PM Re: Super Glue toxicity [Re: Chisel]
Chisel Offline
Veteran

Registered: 12/05/05
Posts: 1296
Thanks everyone

Can you suggest an alternative glue ??

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#296757 - 08/12/20 06:35 PM Re: Super Glue toxicity [Re: Chisel]
Chisel Offline
Veteran

Registered: 12/05/05
Posts: 1296

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