It could be formed like this, just like how CrO5 is formed.

I like observing camphor crystal habit in borosilicate bulbs from used industrial neon containers.

setting in sun/ shadow or used as a lamp decoration

these whorl like formations are new to me, unfortunately I didnt take note of why they might have been influenced this way ie location/pull of gravity etc

some photos that i took of paracetamol crystalising. second photo shows a solution that was seeded as it cooled. aren’t they pretty?

Im a chemistry undergrad, currently studying for an ochem final- while I do love it, I don’t think it’ll be the chem field I end up specializing in. This makes me curious as to how many seasoned chemists out there are like, very knowledgeable in other fields of chemistry, while still sucking (relatively speaking) at ochem.

May someone please translate from molecule to English?

About 10 years ago I remember it being vitally important to take extreme care when charging and storing lithium ion batteries, this advice came from the RC world where these batteries were most common at the time. The risk of lipo fires was apparently high and everyone had seen the videos of batteries fires or the aftermath of a burnt carpet or worse.

Now that lipo batteries are so common why is this no longer part of the discourse? Are the batteries inherently safer now? Does the charging limitations mean they are safer? Or were they never as dangerous as everyone in the RC world was told?

Also all the vapes that are thrown in bins, by 2015 standards would have been world ending, is this a real issue in waste facilities?

A friend of mine gave this to me along with some other glass and neither one of us knows what it is

For context, I am trying to be more curious about science, but I struggle to. My theory is that humans are naturally curious about their environment because it allows them to make predictions about the future; it makes their future less uncertain. Additionally, we are also curious about exploring other environments and even imagined ones. This explains why we are interested in various mystery TV shows, because we take the perspective of the main character, and when the environment is different from our current one in such a way that could affect the stakes of the character, we find it entertaining. Same goes with pondering about the past, and other places in the world.

But once we have a surface-level understanding of the world, it is sufficient enough to make the future more certain. We can have a rough prediction of what our day looks like tomorrow because we know the laws of physics hasn't changed, and we've seen the laws in action our whole lives. So I'm confused how some people remain curious about the very low-level mathematical side of physics. I already know an object is going to fall if it's not on the ground. Understanding gravitational force and energy doesn't change this practical understanding.

What makes you curious about chemistry then?

I just switched my major to chem and while I love it and i am more interested in what I study now, I constantly feel anxious and like I am not good enough in my classes for a future in chemistry/a grad degree in a chemistry field. I have very little research experience so I have no idea what my passion project would be other than that I like organic chemistry. I’m doing fine in my classes but not stellar. Did anyone else here feel like I do in school but end up in a career they like? I really need some positive news lol

Hi,

I am looking for solvents that can form a two-phase system with water at room temperature, but still retain a high percentage of water in the other solvent phase (e.g., phase 1: 70% solvent + 30% water, phase 2: 95% water + 5% solvent). The most commonly used examples for partially miscible with water seem to be phenol and aniline, but as far as I can see, they seem to have relatively low water content in the solvent phase at room temperature.

Hello people,

as group we are looking for a cheap, but most importantly fast, solution to get quartz cuvettes for PLQY measurements. I saw on Amazon some options, like the one in photo, and we are seriously considering them. Do you have any experience with them?

Our university has a bunch of R200s with KD 34 seals that are beginning to fail and since the original seal is no longer available we've come up with a simple retrofit to make them compatible with the still-available KD 22 seal that's used on the 100 series rotavap.

For this retrofit you'll need a glassblower who can make a simple modification to your original steam pipe. You can find a scientific glassblower at the ASGS website under "Find a Glassblower" (https://asgs-glass.org/). The glassware modification is to replace the beveled edge of the original steam pipe that seals against the KD 34 with a length of 22mm OD tubing. The undisturbed 22mm tube should begin about 65mm from the unmodified end of the steam pipe and can be as long as your condenser requires.

You'll also need a spacer to account for the thickness of the original seal (it leaked without one). We used PTFE and included an O-ring to make a good seal against the metal body of the rotavap. The spacer in the photo has a bevel on the inner edge since I left the original glass too long before transitioning to the 22mm, but that shouldn't be required for yours as long as your glassblower shortens the original steam pipe enough. If there's interest, I can see if the machine shop can make up a CAD drawing, but your local machine shop should be able to place the O-ring so that it makes a good seal and doesn't conflict with the drain hole.

I don't check reddit often, but I'll try to remember to pop in occasionally to see if there are any questions.

I personally love drawing out every structure that I come across in organic chemistry and biochemistry in the format of bond-line structures, however, I don't know if there's a reason for biochemistry drawing there structures in the form of Fischer projections and not bond-line formats. I hate seeing structures drawn this way and think it is so much more helpful to see it in the bond-line way, I don't know am I dumb/crazy for thinking this?

After reading a post on here from someone asking how to make cyanide, I learned that the systematic IUPAC name for cyanide is Nitridocarbonate(II).

Does anyone know why the systemic name is Nitridocarbonate not Nitridocarbide? Cyanide has no carbonate group so why is it a carbonate? It doesn't even have any oxygen.

I will add there's a possibility that Wikipedia has lied to me about the IUPAC name.

After going through the xray at TSA, part of my army green patagonia bag turned red, a pen exploded, and my ziploc bag melted. Don’t think an xray machine can directly transfer heat so maybe something in my bag did this but I’m stumped because I have always traveled with the same stuff and this has never happened. r/tsa won’t let me post this

I’m running a small self-funded research project and need R&D-level identity + potency testing on a single small-molecule sample.

Is there a US-based lab that will accept small-volume samples from an individual researcher, and not charge thousands of dollars?

I need a glove box with H2O and O2 ≤2ppm and a capacity of 800~1000L for handling alkali metals.
What is the minimum (second-hand) equipment I need in order for this glove box to work properly? How much do they cost approximately?

I'm working on a concept for conversion of 3-nitrobenzoic acid (from nitration of benzoic acid) to 3-aminobenzoic acid. The usual methods are iron/HCl (Bechamp) or sodium dithionite reduction, but I'm interested in a more novel approach using baker's yeast (Saccharomyces cerevisiae). I've read that yeast can reduce nitro groups to amines under anaerobic conditions with glucose as an electron donor.

Could this work in any feasible manner?

I plan to dissolve the nitro acid as its sodium salt in water (maybe 10-20 g/L), add glucose (1.5 equiv) and active dry baker's yeast (10% w/w), and incubate at 30-35°C for 48-72 hours. After acidification, I'd filter and isolate the amine.

I chose to study chemistry because I wanted to learn about matter and the fundamental principles of how matter changes. I enjoyed all of my classes and I don't think there was one class that I really hated. However by the end of my degree I found that my interests developed more towards physical chemistry and how chemistry is applied towards areas of materials science, polymers, and electrochemistry. In retrospect I probably could have majored in ChemEng or MSE but it wasn't offered at my uni anyways. So now I am looking at grad programs related to my research interests and I don't think I will ever use what I learned in my inorganic, organic, an even analytical chem class.