/r/homechemistry

Photograph via snooOG

A subreddit for building your own lab at home and doing chemistry in it.

Please try and keep things professional!

I would like to see this site grow into helping one another explore chemistry, since nothing teaches us better than hands on experimentation, but given this is a new subreddit it has the potential to go very bad.

First and foremost, illicit drugs and illegal substances will not be synthesized here. Common reagents that may be controlled I don't mind as much.
Other than that, have fun and help us all out!

Chemicals that may put you on a DEA watch list, pay cash if you can, or synthesize your own.

List of commonly available chemicals thanks to /u/zyks

Search consumer products by chemicals they contain (thx to /u/gfrnk86)

http://www.sciencemadness.org/ Courtesy of /u/MrBurd

Subscripts and Superscripts are in use

Arrows can be copied and pasted from below:

Equilibrium arrow: ⇌

Right arrow: →

Related Subreddits

/r/chemistry

/r/chemicalreactiongifs

/r/homechemistry

9,677 Subscribers

0

I CHALLENGE SOMEONE TO MAKE SOMETHING GLOW PURPLE COLOR AND ILL RATE IT

3 Comments
2024/06/24
12:35 UTC

4

What glassware supplier would you all recommend?

Been using Karter for a while, but as I work on more complicated projects, a few breakers, a graduated cylinder, test tubes, and a watch glass just isn't cutting it.

4 Comments
2024/06/22
16:52 UTC

2

Purchasing Molecular sieves

Can someone provide a source of relatively inexpensive but high quality molecular sieves? I am talking about 1 or 2 kilo sized purchases.

Thanks.

1 Comment
2024/06/21
17:33 UTC

4

Glass tubes that won't break when melting

Hey all, I figure this is the right sub for this. I'm trying to get some test tubes for a craft, and I was wondering if any of you have experience sealing vials, and which brands to avoid for this work? I don't want to buy a bunch of glass that breaks as it cools. Also any tips on annealing or working with glass would be super nice!

2 Comments
2024/06/18
23:17 UTC

10

Making flash paper and flash cotton at home

0 Comments
2024/06/14
12:06 UTC

6

Making chloroform at home (using it to kidnap people might be illegal, check with your country's laws)

2 Comments
2024/06/13
00:56 UTC

5

Having 98% concentrated sulfuric acid on your hands is not a big deal

0 Comments
2024/06/12
01:19 UTC

10

Making 98% concentrated sulfuric acid from Epsom salt

0 Comments
2024/06/09
15:24 UTC

1

Buying glass ware in europe

Does anybody know a good online shop for buying rather cheap glassware? The only one I know of is Chemland, does anybody have experience ordering from it? Thanks in advance!

2 Comments
2024/06/09
15:09 UTC

1

Need some help with "Shopping"

Hey everyone, I originally wanted to make this post because at first I need to buy a new heating mantle and I wanted to ask which company between Joanlab, Stonylab, Labasics and Labfish is the best (for buying the heating mantle) 2) I'm making my own lab in my house, and even if I've already gotten important species (Analytical scale 0.1 mg/ Magnetic stirrer, Distillation, Glassware...) which pieces should be my next one? If you write me a comment with some tips, I'm extremely grateful. Have a nice day

10 Comments
2024/06/09
03:17 UTC

2

chance to buy large amount of glassware at discount price

Hey folks, i’m a college chem major with a rare chance to buy a large amount of glassware from a hobbyist that passed away near me. Currently my main interest is to be able to use aqua regia to refine precious metals and also synthesize the reagents needed for those reactions. I have a small list going, but what glassware and other equipment would you guys keep an eye out for in terms of setting up a home lab?

2 Comments
2024/05/31
22:51 UTC

3

How to make a lead-acid battery at home from household items. Tutorial with detailed explanation on how it actually works.

4 Comments
2024/05/31
22:23 UTC

3

Might be the wrong sub

My sister's are doing one of those at home Crystal growing thing and it has something called alum powder from what I find it's non toxic but I'd like a second opinion from people who know more than I

6 Comments
2024/05/30
01:46 UTC

7

How to make at virtually no cost a lead-dioxide electrode that can be used in many cases as a replacement for an expensive platinum electrode.

0 Comments
2024/05/29
16:42 UTC

2

Oxidation of lignosulfonate to Vanillin

I have been trying to follow the instructions from this german website to get Vanillin from ligninsulfonate.

Its supposed to be a test run for a later graded school project.

However, the reaction seems to have failed.

The procedure detailed on the website is as follows:

Dissolve 10 g of sodium hydroxide in 20 ml of distilled water in portions while stirring. In addition, dissolve 12.5 g of copper sulphate in 50 ml of water. The two solutions are added together while stirring. (The copper hydroxide that initially precipitates redissolves when heated.) Then add 5 g of lignosulphonic acid in portions. Boil the reaction mixture under reflux. After about an hour, remove 5 ml of the mixture. Allow to cool slightly and carefully adjust the pH to around 8 using hydrochloric acid. You will notice a distinct smell of vanillin. The samples adjusted to pH 8 can also be extracted with diethyl ether. To do this, add 20 ml of diethyl ether to 5 ml of the sample and shake well. Siphon off the organic phase with the vanillin using a pipette and transfer it to a watch glass. Allow the ether to evaporate in the fume cupboard. An intensely vanillin-scented film remains.

Website link: https://www.chemieunterricht.de/dc2/papier/dc2pv13a.htm

I had however modified the method slightly:

  • Instead of sodium hydroxide, I used a drain cleaner containing sodium hydroxide, sodium sulfate, liquid paraffin and alum. A pH of fourteen was ensured before the reaction.

-For the extraction, I used ethyl-acetate instead of diethyl-ether (I feared explosive peroxides). I believed ethyl acetate to be a good substitute due to this website: https://researchinschools.org/wp-content/uploads/2020/08/IRISinspired_Camborne2.pdf

Everything else remained unchanged.

I tried executing the procedure as detailed in the instruction (except for the above adjustments).

After one hour under reflux no smell could be observed. In response to this, the mixture was boiled for another two hours, with a sweetish very slight sweetish smell being noticeable afterwards.

However, the smell matched that of the untempered lignin sulfonate, so it most likely was not an indication of any reaction taking place, but just my delusion.

I then went on to attempt to extract a sample with ethyl-acetate. I did this outside, with appropriate PPE and fire extinguishing equipment. Upon evaporation, no film remained, and there was no scent of vanilla whatsoever.

Due to the absence of any vanilla-smell, I suspect my attempt has already failed at the most simple step, that being the decomposition catalyzed with Copper Sulfate. I do have enough reagents to attempt the demonstration about three more times, but I need a hint on what adjustments are most likely to produce the desired results.

-I of course will replace the drain cleaner with actual sodium hydroxide, though I have doubts as to how the other ingredients could have possibly interfered with the reaction?

-I could just have the whole thing reflux for even longer

-Is copper hydroxide an advisable catalyst for this? I have seldom found any references on the internet using Cu2+, though some seem to have used nitro-benzene.

-When it comes to the extraction, is ethyl acetate even a valid choice? Presuming that I have already failed before that step, I havent been able to actually test it yet.

0 Comments
2024/05/19
19:19 UTC

12

Making A Banned Herbicide (That Turns The Frogs Gay)

12 Comments
2024/05/17
06:10 UTC

4

Specific chemical situation

I have a built in cabinet/shelf/wall thing in my basement (constructed 1963). I have had issues with water backing up since I’ve owned the house, over the past 15 years (I keep thinking I have the problem sorted out). The water goes underneath this cabinet every time. Recently, after a water incident, it started smelling really moldy so I panicked, dumped a bunch of bleach on the floor, and squeegeed it under the cabinet. When the plumber came, he said I shouldn’t use bleach but should use a specific spray for mold and mildew. Thing is, I googled it and you can’t mix that with bleach. I have googled my brains out to find what I can use after bleach in this inaccessible space. It’s looking like maybe a solution made of water and washing soda would work and be safe, but there is conflicting opinion on the web. Do any of you have a definitive answer/solution for me? Should I just tear the cabinet out?

12 Comments
2024/05/13
20:56 UTC

2

Diluting 99% rubbing alcohol to 70% using 50% alcohol

Is my math correct in that I would plug in the 99% and 70% values into the cv=cv, solve for V, get delta V, then do 0.5V=deltaV (just doubles deltaV) and boom that’s my answer? This is such a simple question but I haven’t done any math in years and am completely doubting myself.

Edit: thanks for all the help nerds!

13 Comments
2024/05/11
20:43 UTC

2

Hello new to the sub, need tips with Mother’s Day home distillation kit

So Mother’s Day this year I had gotten my wife a glass distillation kit so she can practice essential oil making. My question is are there any references to the heating/Bunsen burner? What is recommended, electric or propane? Mother’s Day is only a couple more days away any advice is much appreciated 🙏

3 Comments
2024/05/09
00:20 UTC

6

DIY Fume Hood advice?

I'm considering building a small fume hood for home projects. From the videos I've watched online, it seems many people have built their own easily own enough for little cost.

I've used large fume hoods in labs, however, all of the safety instructions I've learned are for large scale hoods e.g. the ventilation system, max height of the sash etc.

I'm looking for advice on what I would need to include in my design. Essential safety features, necessary dimensions, materials etc.

The dimensions I'd like to be around: W60cm x D50cm x H<100cm (not really important, if it needs to be taller so be it).

I imagine the material of the box to be wood and pyrex to make a sliding sash on the front.

Any advice appreciated!

3 Comments
2024/05/08
08:23 UTC

51

My secondary workbench is mostly finished now

I‘ll still add a three-port argon / helium line in the back as soon as I get the piece, other than that it’s all ready to be used tho

15 Comments
2024/05/05
06:04 UTC

43

One of my 4yo's recent experiments did something unexpected. Can anyone tell me what's going on here?

https://preview.redd.it/aw8u0kmcpuxc1.jpg?width=2268&format=pjpg&auto=webp&s=1ea4fd2de09c087e656d0f5cf961343aab5b8642

She mixed corn starch, water, and purple food coloring together. After leaving it sit for a day, the excess water separated to the top. But instead of staying purple, the water was blue and the cornstarch portion pink.

7 Comments
2024/05/01
17:38 UTC

4

Hydrogen peroxide purification

Im in the UK and only have access to 12% H2O2 but would like to purify it a bit. I don't need something excessive or even past 30% but only something to make a permanganate rocket engine or nice elephant toothpaste. I mostly just enjoy scientific demonstrations so nothing really dangerous or high-end. Would a drying agent such as anhydrous MgSO4 work or something else. Thanks in advanve

13 Comments
2024/04/27
13:44 UTC

5

I just Googled 'deaths of amateur chemists'. There's some real gold there, for gatekeepers and freedom fighters alike

2 Comments
2024/04/23
15:59 UTC

0

[ Removed by Reddit ]

[ Removed by Reddit on account of violating the content policy. ]

5 Comments
2024/04/21
10:23 UTC

4

Any advice for a hobby chemist?

There has to be a reasonable method to convert the top compound into the lower example. Simple curiosity is all.

7 Comments
2024/04/18
04:29 UTC

4

Sourcing non denatured ethanol

Looking to make some basic ethanol extracts of bioactive plants (eg Melissa, Valeriana and Salvia offìcinalis; pelagronium, nepeta, nicotina) for human consumption and use as reagents.

Does anyone have a reliable vendor for food grade ethanol of >90% purity besides liquid essences and the local polish shop.

Preferably cheap as I'd be very happy to crystallise like a kilogram of valeric acid or linalool but to do so would require copious amounts of ethanol - I have plenty of everything else, solvent is sadly the rate limiting factor.

Cheers, and happy chemistry-ing everyone!

24 Comments
2024/04/15
21:30 UTC

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