Plastic Storage Concerns - Acid Free/Archival?

BigOnBricks

I was wondering if anyone knows if there is any concern over storing Lego in plastic bags?

I have been storing my minifigures in 2x3 white block polyethylene bags like these from Uline

https://www.uline.com/Product/Detail/S-1905/Poly-Bags-White-Block/2-x-3-2-Mil-White-Block-Reclosable-Bags

You can also get similar bags that are polypropylene and considered safe for archiving,  They are advertised as naturally acid free and lignin free.  They tend not to be as pliable of a material and I can't find them in as many sizes as the polyethylene ones.

I know acid is a concern for paper which is why I have all of my instruction books in acid free sheet protectors but I can't find an answer if this is a concern for Lego.

I am also concerned about long term storage of pieces in Ziploc or similar bags.

Does anyone know any downside to storage of Lego in plastic bags that are not acid free?

Thanks

Lego_Lord_Mayorca

You just opened up a whole new can of worms for me to worry about! I had thought my boxed sets safe, sealed up in their various plastic baggies, of many brands and varieties from over the years. But now I'm having visions of melted, decaying bits falling upon my pieces, warping or coloring or who-knows-what to my precious old sets! Father Time! Was not yellowing my white bricks and peeling the stickers off punishment enough!?!?