# Dry Ice Addition

**URL:** <https://boards.straightdope.com/t/dry-ice-addition/546879>\
**Category:** Cecil's Columns/Staff Reports\
**Created:** [July 16, 2010, 3:48am UTC](https://boards.straightdope.com/t/dry-ice-addition/546879 "2010-07-16T03:48:46Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![ZeroTucker](https://avatars.discourse-cdn.com/v4/letter/z/f17d59/32.png) [@ZeroTucker](https://boards.straightdope.com/u/ZeroTucker)\
**Post date:** [July 16, 2010, 3:48am UTC](https://boards.straightdope.com/t/dry-ice-addition/546879/1 "2010-07-16T03:48:46Z")

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Hello,

The article was very nicely written and covered a lot of points. One thing I would like to say thought, according to the [dry ice](http://dryicenetwork.com) website, dry ice was actually discovered and not invented. Dry ice the produce was trademarked by the people that first sold it.  
-Tucker

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**Author:** ![C\_K\_Dexter\_Haven](https://avatars.discourse-cdn.com/v4/letter/c/b2d939/32.png) [@C\_K\_Dexter\_Haven](https://boards.straightdope.com/u/C_K_Dexter_Haven)\
**Post date:** [July 16, 2010, 12:05pm UTC](https://boards.straightdope.com/t/dry-ice-addition/546879/2 "2010-07-16T12:05:42Z")

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Welcome to the Straight Dope Message Boards, **Tucker** , we’re glad to have you with us. When you start a thread, it’s helpful to other readers to provide a link to the staff report you’re commenting on. Helps keep us all on the same page, and saves searching time. In this case, I assume it’s: [What exactly is dry ice? - The Straight Dope](http://www.straightdope.com/columns/read/2115/what-exactly-is-dry-ice)

No biggie, you’ll know for next time.

And **Karen** does use “invented” in quotation marks, meaning that she’s making a joke.

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**Author:** ![AWB](https://avatars.discourse-cdn.com/v4/letter/a/bb73d2/32.png) [@AWB](https://boards.straightdope.com/u/AWB)\
**Post date:** [July 17, 2010, 1:06am UTC](https://boards.straightdope.com/t/dry-ice-addition/546879/3 "2010-07-17T01:06:01Z")

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Karen said she didn’t know who “invented” (i.e., discovered) dry ice.

It was French chemist Charles Thilorier, who observed it in 1834 as a by-product of his work with liquid (and pressurized) CO[sub]2[/sub].

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**Author:** ![Bryan\_Ekers](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/bryan_ekers/32/183_2.png) [@Bryan\_Ekers](https://boards.straightdope.com/u/Bryan_Ekers)\
**Post date:** [July 19, 2010, 3:34pm UTC](https://boards.straightdope.com/t/dry-ice-addition/546879/4 "2010-07-19T15:34:52Z")

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For a sec, I thought the title was “Dry Ice _Addiction_” and I pictured pushers and junkies and “freezing galleries” where addicts injected or sniffed vapours or whatever.