CS gas is the most common of these TRPA1-activating agents but, recently, law enforcement has begun using a newer compound, says Rohini Haar, a doctor with Physicians for Human Rights and a public health scientist at the University of California, Berkeley.
Both are more potent than CS gas, Jordt says. The second category of tear gas agents are pepper sprays and activate the TRPV1 pain receptor. These are mostly derived from capsaicin, the spice compound in chili peppers. There are two compounds in common use in this category: OC gas, a concentrated solution of natural capsaicin, and PAVA, a mix of synthetic capsaicin also used by U. Customs and Border Protection. Long-term effects from any kind of tear gas are not well known, Haar says, particularly if they are related to infrequent and brief exposure.
However, Haar studied residents of the Aida and Dheisheh camps in the West Bank, Palestine, where people reported chronic breathing difficulty, rashes and pain, which the residents attributed to weekly tear gas exposure. Given the risk of injury or damage, Haar says that there are almost no scenarios where the use of tear gas makes sense for controlling crowds. To disperse protesters, police officers have deployed tear gas, as captured in videos like this one:.
Police and military officers have long used tear gas for riot control. Last year, for example, Hong Kong police notably deployed tear gas to break up pro-democracy demonstrations, but protesters quickly developed several tactics to neutralize the tear gas. You might remember the viral video below of a Hong Kong protester plucking a smoking tear gas canister from the ground, plopping it into a thermos, and sealing the lid.
Then, he shakes it. What comes out of the thermos is a pile of dark grey sludge. Some have suggested the protester neutralized the tear gas canister with water, while others say liquid nitrogen did the trick.
Then a Twitter user reported that the protester in the video reached out to him and revealed the contents of the container: mud. I and others saw this and sent it out saying this badass protester used liquid nitrogen to disable the canister of tear gas. But we were curious about why tear gas is so often used in riots, and especially how to neutralize it. So we reached out to Sven Eric Jordt, a pain pharmacologist and toxicologist at Duke University, to learn more.
It has a very similar chemical composition to what you might find in fireworks, says Jordt. Consumer Safety. Accidental mix of bleach and acid kills Buffalo Wild Wings employee. Analytical Chemistry.
Assassination attempt of Russian spy sparks chemical forensics investigation. Share X. To send an e-mail to multiple recipients, separate e-mail addresses with a comma, semicolon, or both. Title: Tear gas and pepper spray: What protesters need to know. Submit Sending Charlotte June 24, PM.
I've heard reports that exposure to tear gas disrupts the female hormone cycle and causes spontaneous periods and bleeding. Has any research been done on that? Robert Johnston June 24, PM. If police are deprived of non-lethal weapons, doesn't that increase the chances that they will resort to lethal weapons? Alan July 6, AM. Why do they need to use weapons at all on peaceful protesters, like the ones in front of St. Sher July 6, PM. There is a difference between protesting and rioting.
William Rubin July 10, AM. I've seen a lot of "protests" turn quite violent - looting, burning of property and businesses, physical violence, etc.. In addition there have been many instances where 'protesters" are blocking streets, which is really infuriating. Blocking people's right to move freely and then purposely putting oneself in a position to get struck or run over by a vehicle is about as stupid as you can get.
If you are peaceful, you shouldn't worry about pepper spray, but if you behave like a jerk, you get what you deserve. Nicole July 19, AM. Your complaint is you have to find an alternate route. Whose civil rights are actually being infringed on?
William Samuel July 28, PM. I disagree with giving rioters advise on how to counteract the affects of OC spray or tear gas. These items are not being used on peaceful protest as some would have you believe.
I give you a clue it won't happen if you stay home and quit destroying other peoples property. Ray Loghry July 14, PM. I believe a lot of political correctness falsehoods were included in this article. They are however used when people turn violent with attacks on innocent citizens, their property, the police and other public and private property. I have no interest in teaching looters and rioters how to minimize the irritation. Yes, you've been hit with tear gas , a substance used around the world to disperse crowds and control riot situations.
While you'll probably recover fully in an hour's time, it's not an experience you'll forget. Just what is this dreadful stuff, and why does it feel like you've been licked full in the face by the devil himself?
In this article, we'll pop open the silver canister and discuss what tear gas is, why it's legal and what you can do to make the burning stop. Sign up for our Newsletter! Mobile Newsletter banner close. Mobile Newsletter chat close. Mobile Newsletter chat dots.
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