An in-depth discussion of tear gas.

Jun 07 2020

Before I repost this Twitter thread in toto, I'd like to say a few things.  First, Zander is an old friend of mine (pushing 20 years at this point).  Second, while he might bill himself as "an amateur chemist," his scientific expertise has been helpful to me numerous times over the years, so I feel that I can vouch for his knowledge as well as his assessment of the situation.  I asked him if I could repost this research earlier and he gave his permission.  For clarity I've made minor edits to add punctuation.  I've also reposted the images he used and gotten hold of copies of his references.  I feel that, right now being able to verify the provenance of information is very important because information sabotage is an effective tactic.

Take it away, Zander.

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I’ve been seeing a lot of conflicting information about tear gas online and wanted to make a guide about what tear gas is, how it’s used and how to treat exposure to it. I have a background in experimental methodology and research, and am an amateur chemist.

Special thanks to @3liza for this thread that gave me inroads to the literature, @taliabear for proofreading this and my professional chemist friend who wishes to remain anonymous for reviewing this.

So the first thing to really drive home: Tear gas isn’t just one thing. There’s nearly a dozen different compounds that are used as riot control agents across the world. I’ll be focusing on the USA because that’s where I live.