In this video, I show you how to make a simple DIY proton exchange membrane (PEM) at home that can be used in DIY fuel cells and electrolysis experiments. This PEM can be used as a substitute for an ion-conducting material similar to Nafion.

Is there any easy way to purify or concentrate calcium hypochlorite pool shock? The 52% - 56% stuff is readily available near me, but the 70%+ stuff is only available online, which gets a little expensive and annoying. I'd like to concentrate the stuff I can buy locally if I can.

Hello all.

I find myself with a bottle of ethyl acetate I didn’t end up using. Any suggestions on interesting experiments, products, or uses for it?

A writeup can be found here: https://illumina-chemie.org/viewtopic.php?t=6385

It‘s in German, but hopefully you can still follow.

(My hand isn’t actually that pale. That’s just the camera contrasting it against the yellow)

Was doing a nitration with azeotropic nitric acid and realised I was nearly out of gloves, so decided to keep them for cleanup (to minimise chance of touching sulfuric because that actually hurts). Spilt some on my hand so thought I may as well make a follow up to my H2O2 post. This time it’s my hand about 30 minutes after getting a ton of HNO3 on my right hand.

It looked a lot worse the following day with the yellow, but unfortunately I did not get a picture of it. Most of my hand ended up stained yellow and it took 6 days until it nearly all pealed off and looked normal again.

Was not painful.

I'm probably not the first to ask this, but what is the opinion on vevor or deschem glassware? Seems somewhat decent reviews, but I often see people recommending not putting them under a strong vacuum, but that maybe a water aspirator strength vacuum is fine.

Just wondering

New fun chemicals

Exceptional P-aminophenol crystals; from boiling water.

Simple distillation of acetone

P-aminophenol simple reflux.

Hi everyone,

my DIY hot plate and stirrer

I made a DIY hot plate and stirrer. The power of heater is 1850w. It uses 5 heater cartridges. Motor runs at 20KHz to prevent loud whine. Everything is controlled via esp32. Hot plate is controlled via PID algorithm. I have also included code for auto-tuning PID. This project will be very useful for my chemistry experiments. Although I wished I could create a combined hot plate and stirrer.

several years ago when I was 15 there was a problem. I needed to make many organic acids from their metal salts and perform a few oxidations at an affordable price. Sulfuric acid is a good choice yet concentrated sulfuric acid so I thought was nowhere to be found.

Luckily the automotive store had battery acid at ~35% concentration. To make concentrated sulfuric acid I heated this below or just above boling where the water fled until copious thick white fumes were generated. These thick white fume became more and more copious and took up so much space outside if there was no wind. When the thick fumes were produced for a period of 15 minutes the heat was stopped, and the thick oil was put in a mason jar within 30-60 minutes. for 500 ml of liquid this affords about 120 ml of "concentrated H2SO4

I'm only distilling water but it's probably contaminated from the aquarium tube I used, it probably released chemicals on the water.

I used some normal glass and used salt around it to heat it up without breaking the glass

I mostly just wanted to see if it would actually not crack 🫠

Either way, please rate this in safety This is pretry getto and probably not safe

The ice pack on top is cooling the water, which is siphoned inside the back mug so that it cools the mason jar to condense the water vapor

I realized the water would get pretty hot so I siphoned the water to another container too, keeping it cool witha constant flow of cool water

Hi, I’m a high school chemistry enthusiast, and would like to know if there are any chemicals I can easily synthesize with at home materials? I just really can’t wait till I’m an adult, with adult money to go buy pure chemicals to do home chemistry. I was going to synthesize dichloride with vinegar and bleach, (I don’t need any of you to tell me how irresponsible that is) but I don’t have bleach. Anything will help, thanks!😊

Slide 1: Benchtop process; Slide 2: Sample of purified 2-Hydroxy Benzoate (Faint lavender tint to solution due to some slight iron contamination; formation of Ferric Salicylate complex)

Simple acid-catalyzed ester-hydrolysis of ASA using dilute aqueous H2SO4 (pH~2).

If you live in Boston, MA then we meet at Kendall Square train station or Gilman Square Train station. Selling for $1 a tube.

If you live elsewhere then I ship through eBay. DM for link.

Reducing volume of piperinic acid/ isopropanol solution.

If anyone need anything pm me I'll make you the best deal possible everything is American or European vintage old school brands also

Canada and USA mainly but can do Europe too

Thanks for helping me out

https://youtu.be/fY9q3Px2d78?si=9I8JfmyHAmEM-jhT