Acrylic cases damaging Lego long term fears?

[Mistresspaige7120]

Hi there guys I’ve had a concern regarding acrylic cases. I’ve heard acrylic offgassing can release materials like  methal methacrylate that cause harm to Lego over time. Is this true or am I being paranoid and acrylic cases are safe.

[JaBaCaDaBra]

Lego doesn't need Acryl to detoriate

[Peppermint_M]

1 hour ago, Mistresspaige7120 said:

Hi there guys I’ve had a concern regarding acrylic cases. I’ve heard acrylic offgassing can release materials like  methal methacrylate that cause harm to Lego over time. Is this true or am I being paranoid and acrylic cases are safe.

Most plastic needs other environmental factors to seriously degrade. It's best to keep it out of direct sunlight, but that's best for the Lego too. 

I don't think a normal space would cause issues.

[MAB]

This won't be a problem unless you are heating your display cases to very high temperatures or exposing them to very low pressures. Both of which would damage the LEGO too.

[Mylenium]

6 hours ago, Mistresspaige7120 said:

I’ve heard acrylic offgassing can release materials like  methal methacrylate

That would be the glue only and that can be influenced by purchasing only cases that don't use these materials. Acrylic by its nature is a very "pure" plastic that doesn't contain harmful additives or only very few to chemically stabilize it. If at all I'd be concerned about it crumbling to dust when air humidity is too low and the sun light too intense. It does not use sulfur, chlorine, chrome oxides and so on like other plastic materials to create more stable polymer chains. You're worrying about nothing, basically. Acrylic is one of the least toxic plastic materials right out of the gate. Unless it's been mistreated and been tainted by using the wrong glue and paint it won't do anything. I'd be much more concerned about the ABS of the LEGO pieces themselves...

Mylenium