I'm dying chat.
Credit: An anonymous labrat friend. Thank you.
I spent a bunch of time in art classes and learned more practical chemical safety and disposal than my actual chemistry classes.
this post was submitted on 21 Mar 2025
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Best way to get rid of acetone is what my boss made me and a co-worker do once:
Toss it onto some metal plates that had been left in 110 degree weather. They were also painted black.
Did you know that's enough for acetone to flash-light? We didn't until that moment, then we had fun
I fondly remember my organic chemistry lab professor giving us all a lecture that was something like this:
"I see that you children have learned how good acetone is at cleaning glassware. And you are correct: it is excellent. However, you cannot pour it down the sink and we have to pay for hazardous waste disposal. So use soap, water, and elbow grease instead."
Insane motherfuckers: "Pour the acetone in my mouth!"
This is so irresponsible, everyone knows you pour it out outside.
Whichever one has the post polystyrene in it, right?
EHS would raise hell if they caught us putting waste solvent in anything but a hazardous waste container...
You know, I used to do this as a teenager, when cleaning my bearings with acetone, and I recall my family needing to get the sink repaired due to leakages getting quite severe at times.
Only through this post have I come to realise, 20 years later, that I was most likely at fault for the issue.
I mean I'm still not going to admit it to anyone, but it's good to know and stuff.
I had a bong as a freshman. I cleaned it with acetone. I then had several tubes instead.
Never understood why folks used acrylic bongs, like, how do you clean it? I kinda figured they were meant as disposable party bongs.
90%+ rubbing alcohol and rock salt actually does a really good job, it just takes more elbow grease. Still won't be as clean as literally fucking dissolving it, but that's how I'd do it if I couldn't use acetone.
I use 70% isopropyl and it dissolves everything except for a film around the inner chamber.
Like a lump of tar just stops existing as a solid thing. Looks interesting after like 6 hours.
The gold standard for party bongs is shitpipes. Dunno about other places but for a Euro standard one, you need, bottom to top, 1x 100mm end cap, 1x 100mm sleeve (pipe to pipe coupling), 1x 100mm adapter to 40mm (the 100mm side should fit the sleeve), some length of 40mm pipe, some means to drill two holes, and two things not available at any random hardware store: a preferably metal what's it called in English the thing that goes into the water and some tissue to tighten that metal thing in its hole, wrap in a taper and twist in. Try to get an adapter that's angled, there's also ones with a flat step instead of (quite aggressively) tapering the diameter.
Completely and utterly indestructible at least when it comes to banging it up. In principle also fit to handle acetone those Euro standard pipes are polypropylene but I wouldn't push it. Tons of water in there, definitely bottom-heavy, and very light when empty.
You really don't clean it you let it get gunky, just replace the water, it's not like the gunk would dissolve into there. If you really have to, just spend what five to ten bucks on new hardware. Euro pipes should in principle hold up to acetone they're PP but eh, why. If it works it's probably still going to make the thing unsable for a week or so.
Now that's science.
This person smokes
I always thought the same, and I've been toking for about two decades. For pieces my friends and I always prefer glass. If using a glass piece though, it's important to use vinegar once in a while (not just Isopropanol) to get rid of the chance of mould build up.
Let's just all start smoking with acetone as our bong water! So many problems solved :)
Except admitting it to 50,000 lemmy users, haha. No worries, I didn't know acetone ruins pvc until this post either.
At least you know why your sinks continue to melt now
That's just the natural aging process. Plumbing just gets saggy and wrinkly. Ask any man over 50.
My favorite overheard undergrad story:
I was walking past the lecture hall right after an organic chemistry midterm, and there was a cluster of 4-5 students talking about the exam. One asked about question 8b, and another one said "you're not supposed to mix nitric acid and ethanol, that makes TNT, right?" I had to stifle a chuckle as I walked by.
So close, and yet so far! Nitrated acetone is explosive, and TNT (trinitrotoluene) is also made with nitric acid, but toluene is a much more complex molecule than acetone. If those undergrads could figure out how to turn acetone into TNT efficiently, they'd get a Nobel!
Smelling it untill it's totally evaporated. Even if I much prefer isopropyl alcohol.
Context: acetone will dissolve ABS plastic. Drain pipes can be made out of ABS.
The pipes are usually made of PVC. Several other components are still often made of ABS.
In my experience, household drain pipes are usually made out of PVC.
True. I corrected the statement.
I mean, PVC pipes are even more vulnerable to acetone than ABS ones, so I would've made a different correction (broadening the statement rather than narrowing it).
Y'all have a sink in your fume hood? We just had waste bottles.
Cup sinks in fume hoods used to be more common, but as a lab planner they are pretty rare requests nowadays. If I had to guess, it's probably to do with the move away from central acid-waste neutralization systems towards procedural controls dictating neutralization/dilution prior to disposal.
A lab planner! That's one of those cool (sounding at least) jobs that are obvious when you think about it but I've just never thought about it.
Definitely piqued my curiosity though. How much of your work is designing new labs vs retrofitting existing ones, how much travel is involved / how much area do you cover (the question there is really about how many labs exist needing such services), and what are any weird or surprising elements of your job?!
Wait, industry is moving away from central neutralization? My wife is the facilities manager for an R1 engineering department and they commissioned a building two years ago with a central acid collection tank -_-
It varies from place to place, but the trend is away from them. I recently did a basis-of-design study for another R1 institution, and they said in no uncertain terms that they wanted to decommission the existing central system in their circa-1990 lab tower. Facilities departments often find them to be a PITA to manage and maintain, versus just requiring researchers to neutralize their acid waste before putting it down the sink, or collecting other hazardous waste to be taken away by a service
A lot of ours has sinks, this wasn't at mine though. :)
What is the proper disposal method?
Acetone evaporates quickly. You just let it sit for a minute and it'll dispose of itself
so just inhale it all... ok
Wick it with some paper towels and let it evaporate.
How else am I supposed to get rid of the agar huh?
I did a couple of times pour acetone down the drain but I did run water at full blast at the same time to wash it down immediately. Guess Im slightly smarter then undergrads.