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eppur_se_muova

(42,605 posts)

7. The polymer of methyl methacrylate is known as Plexiglas, Lucite, or Perspex. It's both stiff and transparent.

Reply to IcyPeas (Reply #5)

Fri May 22, 2026, 09:38 PM

Friday

MMA is also used to make co-polymers, with various improved properties (relative to pMMA) including with other methacrylates.

https://en.wikipedia.org/wiki/Poly(methyl_methacrylate)
https://en.wikipedia.org/wiki/Methyl_methacrylate

MMA is used in many resins, glues, etc. If you've ever cast transparent plastics for hobby projects (paperweights were popular at one time) it's probably MMA you worked with.

For the purposes of fire control, the worst thing about may be its low boiling point (100 C) -- comparable to many common flammable solvents, more volatile than gasoline or kerosene.

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Highlight:

'It fails' or 'it blows up': 2 options left for toxic chemical leak in Garden Grove, officials say [View all] chowder66 Friday OP

"Plastics!" he whispered orthoclad Friday #1

This is...I just don't know lol. This take is just not it. Melon Friday #4

Never forgotten... ultralite001 Friday #2

Plastic is polluting the entire world IcyPeas Friday #3

This message was self-deleted by its author Melon Friday #9

Watching local news... IcyPeas Friday #5

This message was self-deleted by its author Melon Friday #6

The polymer of methyl methacrylate is known as Plexiglas, Lucite, or Perspex. It's both stiff and transparent. eppur_se_muova Friday #7

Thank you. IcyPeas Friday #11

God knows what that water is absorbing, but MMA itself is slightly water-soluble. eppur_se_muova Friday #12

Obvious question: what's up with the emergency vent valve ? Who builds a storage tank without one ? n t eppur_se_muova Friday #8

It has one. It likely broke from pressure Melon Friday #10