Thanks John, that's very useful.
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Interesting comment from that manufacturer. If your fridge is running at 13 degC John it’s not doing it’s job and not safe to useHaving used CA at work for years , in fact since the 70s along with the accelerator I would like to join in .As CA adhesive ages it goes thicker, and produces strings, that's just the nature of the chemical.
Cyanoacrylate adhesives have a short shelf life. Date-stamped containers help to ensure that the adhesive is still viable. One manufacturer supplies the following information and advice:
Another manufacturer says that the maximum shelf life of 12 months is obtained for some of their cyanoacrylates if the original containers are stored at 35 to 40 °F (2 to 4 °C).[43] User forums and some manufacturers say that an almost unlimited shelf life is attainable by storing unopened at −4 °F (−20 °C), the typical temperature of a domestic freezer, and allowing the contents to reach room temperature before use.[44] Opening a container while chilled may cause moisture from the air to condense in the container; however, reports from hobbyists suggest that storing cyanoacrylate in a freezer can preserve opened cyanoacrylate indefinitely.
As cyanoacrylates age, they polymerize, become thicker, and cure more slowly. They can be thinned with a cyanoacrylate of the same chemical composition with lower viscosity.[33] Storing cyanoacrylates below 0 °F (−18 °C) will nearly stop the polymerization process and prevent aging.
All interesting facts , being truthful about it a fresh bottle is always better , grabs faster doesn't it
including Bob's and our fingers .
Good morning .
The pharmaceutical designated temperature for refrigeration is from 2 - 8 degC. Above about 10degC microbial growth can start, allowing food you think fresh to go off without you realising it.
All of this information seems to be aimed at industrial users who may buy in bulk and store until required for use. Once you open the top it’s all moot, because air returning to the tube after it’s squeezed will contain moisture that accelerates the degradation of the cyano.
Funnily enough, plastic solvent glues are never mentioned in this context, especially such as Tamiya extra thin. Scientifically they could benefit from refrigeration once opened. The cooler temperatures will minimise solvent evaporation and stop them simply disappearing if the bottle isn’t properly closed. I’m not advocating that either, by the way, I’m just going to try to remember to properly close the bottles :smiling5:
I must admit I think it a little weird that we try to get a few more pence worth of CA out of a tube, yet keep stashes of kits worth many hundreds of pounds that we may never get around to building. Glue is a consumable…..buy small tubes and buy more frequently, then it’s always fresh :tongue-out3:Comment
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Actually the drier the environment the better and the fridge is ideal for it but in my environment the humidity is so high that its adhesive capabilities deteriorate rapidly once the cap is removed. So always start with a fresh tube. Some manufacturers have found this out and sell mini sized tubes. I keep a bundle of them of different forms...gel, quick setting etc.
Imagine using CA in the north pole...totally useless if the temperature is the factor.
Cheers,
Richard aka WabbleComment
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Thanks John, excellent reply and some big words, has your spell checker had a melt down lolHaving used CA at work for years , in fact since the 70s along with the accelerator I would like to join in .As CA adhesive ages it goes thicker, and produces strings, that's just the nature of the chemical.
Cyanoacrylate adhesives have a short shelf life. Date-stamped containers help to ensure that the adhesive is still viable. One manufacturer supplies the following information and advice:
Another manufacturer says that the maximum shelf life of 12 months is obtained for some of their cyanoacrylates if the original containers are stored at 35 to 40 °F (2 to 4 °C).[43] User forums and some manufacturers say that an almost unlimited shelf life is attainable by storing unopened at −4 °F (−20 °C), the typical temperature of a domestic freezer, and allowing the contents to reach room temperature before use.[44] Opening a container while chilled may cause moisture from the air to condense in the container; however, reports from hobbyists suggest that storing cyanoacrylate in a freezer can preserve opened cyanoacrylate indefinitely.
As cyanoacrylates age, they polymerize, become thicker, and cure more slowly. They can be thinned with a cyanoacrylate of the same chemical composition with lower viscosity.[33] Storing cyanoacrylates below 0 °F (−18 °C) will nearly stop the polymerization process and prevent aging.
All interesting facts , being truthful about it a fresh bottle is always better , grabs faster doesn't it including Bob's and our fingers .
Good morning .
Learnt a great deal John, much appreciated.Comment
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Why not just draw a line under this eh guys?!....
I think after all the detailed comments,not to mention the "scientific debate", it's just a case of " do what you wanna do"....
It's getting tedious now, IT'S JUST A HOBBY.... and,unless there's something I'm missing,we don't really need rocket science?!Comment
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What, like this Roket science?
Sorry mate, couldn’t resist it
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Why do my reviews always seem to cause problems??
Will stop reviews after the looper, less stressComment
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Don't take offence Bob mate,
I certainly didn't mean that!! ...
... It was a perfectly good question in the first place... I just thought that it got a bit over complicated
No stress meant to you buddy,I value your thoughts/queries all the time
Known you too long to take what you mean any other way than useful
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