# What are acid proof containers made out of

**URL:** <https://boards.straightdope.com/t/what-are-acid-proof-containers-made-out-of/287895>\
**Category:** Factual Questions\
**Created:** [February 2, 2005, 12:59am UTC](https://boards.straightdope.com/t/what-are-acid-proof-containers-made-out-of/287895 "2005-02-02T00:59:44Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![HMS\_Irruncible](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/hms_irruncible/32/7394_2.png) [@HMS\_Irruncible](https://boards.straightdope.com/u/HMS_Irruncible)\
**Post date:** [February 3, 2005, 12:50pm UTC](https://boards.straightdope.com/t/what-are-acid-proof-containers-made-out-of/287895/21 "2005-02-03T12:50:00Z")

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> [@Ruken](#):
>
> Your confusion results from me being wrong. CaF[sub]2[/sub] is indeed insoluble. You become hypocalcemic, meaning your [Ca[sup]2+[/sup]] drops. This screws with your heart. I don’t pretend to understand enough about bio to understand how this works.

The insolubility is exactly the problem. The calcium gets bound up in salts, instead of being where it should be - dissolved in your blood and keeping your muscles working, especially the heart.

And HF does burn, perhaps not as much as other acids, but it does cause pain and skin lesions in sufficient concentrations.

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