Making a Beautiful Violet Dye 

Your channel is fantastic, great stuff!

Thanks! 🤗

Lol I bet it looks a bit familiar. And yeah I kind of figured that, I tend to use excessively high concentrations of reagents in most demos I do, which for something as potent as an azo dye is definitely not necessary

Warhammer mentioned 😎

lol I have to admit I thought the exact same thing when I was first learning it as well, the idea of why they called benzene rings "aromatic" didn't click/make sense to me yet. Although in 2000 they did discover that argon can technically form bonds, but only very weakly with fluorine to my knowledge (HArF)

@@integral_chemistry Ya, I have heard that compound can exist with Argon, but being commonly described in organic chemistry textbooks is just too suspicious so I figured it out in like 5 mins.

Technically Ar = Aryl in this context

@@richardark Technically true^

Some Nile green vibes too Also meant as a compliment

Thank you so much! Definitely taken as a compliment, I used to really like his videos. (Still do kinda, but his target audience is different now and I definitely understand the reasons for the change)

@@integral_chemistry I didn't know green was still uploading. Neato. I only know the old og ones

Why does that make it more accessible?

@@SetTheCurveIt can be easier to get or make, for some folks. I think it's great when creators give a few different routes to the same product

Thanks man! Glad you noticed such a subtle difference in the typical procedure lol. I'm still working on my potassium nitrite synth video. I had it completed but nurdrage suggested I try permanganate titration to confirm purity, then it just spiraled and I ended up with 4 hours of footage 😬 But yeah big accessibility difference is the purification, no way to separate sodium nitrite from nitrate.

Content and pace is first class, impressive. Thanks!

@@integral_chemistry Separating the sodium salts is a painstaking task, but separating the corresponding esters must be easier due to the sharp difference in boiling points (e.g. 45 C for i-PrONO and 102 C for i-PrONO2). A nitrite ester may then be decomposed with an alcohol solution of sodium hydroxide, yielding decently pure sodium nitrite after one water recryst. I've found a procedure that uses EtONO and EtOH, but I suppose it should also work with i-PrONO and i-PrOH since ethyl nitrite is a nightmare to handle, and the former is easily obtained with virtually any acid stronger than oxalic. I even doubt the formation of i-PrONO2 in a dilute water solution, so the distillation step may be entirely omitted. Might be worth checking

I'm glad to hear it! Hope you're doing well and all

They're incredibly satisfying! As long as you keep it cool very little can go wrong (at least at small scale)

Glad you like them!

Never too late to learn :) I honestly don't understand way more than I do understand, its a VAST discipline

Yes, the indicator reagent should only be made with very dilute sodium hydroxide solution. In conc. Mg2+ solutions it otherwise may indeed precipitate Mg(OH)2. But the blue color lack is real. Alkaline azo violet is violet not blue. The test is very specific (the blue color lack is exclusively formed with Mg2+, not with other cations) and extremely sensitive: it even indicates the tiny amount of Mg2+ in tap water (if only a few drops of the indicator solution are added).

I'm guessing it's a reaction with the chlorine dissolved in tap water

​​@@Spencergolde Here in Germany our tap water isn't chlorinated. And azo violet doesn't form a blue color lack with an aqueous solution of chlorine - it does this exclusively with Mg2+. You should finally accept that or test it out yourself if you still doubt it (like every serious scientist).

@experimental_chemistry I was referring to the yellow color change that happened a minute later with tap water, not the blue color change with manganese, which was said to be currently unexplainable. I would be happy to test it myself, but I currently don't have access to the reagents needed to make azo violet and I'm not really wanting to do a full synthesis just for this one curiosity. Just throwing an idea out there, also wasn't up to date on how different countries protect their drinking water, good to know

It may not be incorrect so much as irrelevant 😅 like you said, because either Substitution is identical because of the structure of the molecule the product forms the same regardless. I mainly wanted to emphasize that there was no way it could bond at that single carbon position between the two hydroxyl groups

@@integral_chemistry oooh, that ortho. I was thinking ortho in the other direction

@@SetTheCurve Right? It would be so silly for it to bind there that your brain doesn't even consider it lol

I am! I actually have several made right now, but the plan was to have my girlfriend take over the mulling/demos since she actually does art, and she's just been too busy for it. Absolutely plan to put out at least one or two within the next month

@@integral_chemistry Very good news! I like your videos, but I like the pigment videos even more and look forward to them very much!

If its a solution of water and peroxide like you buy at the grocery store it'll just explode. However if you put them in 100% pure hydrogen peroxide you'll get sodium/lithium peroxide (and still possibly an explosion)

@@integral_chemistry would you consider doing a short of a small amount of 100 percent peroxide and the various water reactions metals

@ImPrather I'd be down to try! The issue is getting 100% peroxide though. I've got no idea how that could be done, but I'd definitely be willing to give it a shot