Chemistry

Hello Chemists. I was wondering what the half-lives are for certain tear gas molecules used in tear gas used by the police. My house was tear gas due to an incident with a neighbor 5 days ago and now it still lingers.

They said that they used CN, OC and CS gas.

CN = (Orthochlorobenzalmalononitrile) OC = (Oleoresin Capsicum) CN = (Chloroacetophenone)

Thanks a lot for your help. Also, if you could note special properties of these molecules, about toxicity, etc, please let me know too :-)

Thank you!

cross-posted from: https://lemmy.sdf.org/post/3795687

"Many of these terms were in common use into the 20th century."

I hear many of these terms in common usage today, like potash, tartar, spirits, soda/soda ash, lime, soda lime, slacked lime, quicklime, lye, alkali, caustic soda, caustic potash, caustic alkali, quicksilver, chalk, cinnabar, fools gold, fulminating silver, fulminating gold, gypsum, vitriol has taken on a less specific meaning, aqua regia, turpentines, lead sugar, sulfur.

I think the reason that so many of these terms are retained is that the substances they refer to have been known for thousands of years in some cases.

brimstone is a much cooler name for sulfur that should be brought back. aqua vitae is a nice name for ethanol. the names of metals haven't changed.

cross-posted from: https://lemmy.sdf.org/post/3732588

A nice trip up and down the scale of things. I especially like the ones from 10^1 to 10^14, inhumane numbers attempting to be brought to a human scale.

Source: CRC Standard Mathematical Tables and Formulas (Zwillinger, Daniel) (Z-Library)

cross-posted from: https://mander.xyz/post/2883317

Nature chemistry link: https://www.nature.com/articles/s41557-023-01300-3

I put water in a jar and sealed it while it was boiling, and now it boils at any temperature. Super fun demo to try.

Trying to curate an interesting community with people of all angles of Pharma and would love it if we could have some chemists on board for quality scientific discussion. Right now, we have lots of opinion and op-ed discussions happening surrounding narcotics which I think are great conversations to have but that's not all we are about. Just found your community and hope to have a multifaceted community in !pharma as a one stop drug stop.

Thanks!