Here's an update from Doug that he posted on the Science Madness forum: He moved into a new house and is currently busy with that. He is working on settling in, finding time to do chemistry, and setting up a new lab. He probably won't be back soon, but when he is, expect a new lab setup!

Aaaaaaaaaaaand he's gone. Bye, Doug! See you again next year!

I know the family and other commitments take precedence over playing in the lab and doing KZfaq videos. I wish you the best. You are/were the best educational producer in the field of KZfaq chemistry; you can run with the best of them.

Does he even realize how big his channel has become now?! This is a money maker just sitting here. Man

really miss this channel posting, one of the best.

Doug, I really hope you're all right.

If you're going to make trichlorophenol please be careful and thoroughly research the formation of side products like TCDD. I wanted to make TCP awhile back but i decided against it due to TCDD formation.

I hope you come back soon Doug. Your videos give me confidence to perform projects myself because of the education you give while talking about some of these chemicals. It'd be like Christmas to see you uploading again. Hope to see you soon.

Doug the videos just keep rolling out from you, and I'm loving it.

I just wanted to thank you for being an inspiration to me, I am three weeks away from graduating with a bachelor's in chemistry, and I will be starting grad school this August, I started watching you all the way back in middle school, it sad you have not continued to upload, but none the less thanks for your videos!

It's sad he disappeared like that though. He had a talent with this. Probably the best chem tuber out of them all and he wasn't even around long enough to reap any benefit from it. His videos have more potential than any chemistry videos I've ever seen on KZfaq

Haha.. you're a cool dude, AND a great orator of chemistry. Thank you, Doug. I'm really looking forward to what you've got planned.

Doug. Please come back!!!!! We miss seeing your content.

I’ve been waiting so patiently all day. So relieved that you actually uploaded. As always love the video!

Doug come backkkkkk we need our Chemistry king backkkkk

Is doug dead or taking another year long hiatus? Find out next year on Dragon Ball Z.

Now we will never know what this super secret and super cool reaction is! I feel miserable!

Let’s go Doug ! Chemistry doesn’t wait for nobody !

I think your videos are great and it's pretty awesome to be able to expect the release date of the new videos!

Hey Doug. Thanks for all these videos. They are excellent. I wish you would make more, but you do you. Cheers

Since you quit upoading videos I feel like a forgotten lab spatula in an acid solution.

Great video, as always, Doug.

Doug where are you?

Doug, please come back !

Where were all these great "teachers" when I was in school! Doug, come back!

Hi Doug In your last Lab Tour for 2500 subscribers you said you will make a more detailed Lab Tour in the future.Can we see that in one of your next videos? I love your channel and im so happy that you‘re back.

I miss you DOUG

Love that opening for your patreon supporters.

@Doug's lab, When work slows down and family life allows, hope to see some new videos from you. And I think your channel is every bit as good as Nile Red and Nerd Rage.

I remember watching your videos like about 10 years ago, and this video pops up on my home page. still same voice and lab lol

I did enjoy it and your videos are very educational so i became a patreon thanks

More videos Doug! We need more

Loving the new content, I think that if you put a piece of hose on the bottom of your aspirator it would be a lot quieter. Mine sure is

Hey Doug, Your videos are awesome. Any chance you will make more? Hope you are well.

Please don't stop uploading. Your Channel is bound to grow. Collab with codys lab maybe?

Super! Thank you very much!

Hi Doug. I'm a fan of your videos and watch them regularly. I have some suggestions to improve the sound quality of your audio. I'm not sure what you record with, if it's a video camera or cell phone. If it's a cell phone, the solution is easier, see if you can use a bluetooth headset with noise cancellation. First, it will get the microphone closer to your mouth so the sound of your voice is louder in comparison with the noise in the background. If you're using a video camera with a microphone input, get one of those over the ear microphones like you see rock stars using and plug it into the microphone input. Either solution should be able to be had for an economical price. Ebay and Amazon are overflowing with bluetooth microphones, and the over-ear performance microphones can be had at any music store. Whichever one it is, be sure to look for the terms noise-cancelling, directional, or if it's a performance microphone, look for the term cardioid pattern. Barring technological improvements, there are three main sources of noise in your videos: the aspirator, the vent fan, and OMG THAT SQUEAKY LAB JACK lol. Please, for the love of everything and anything to do with my eardrums, please put some grease on that lab jack lol. If you're concerned about volatile hydrocarbons that may interact with any of your experiments, I understand, but perhaps you could just use a dab of that heavily fluorinated grease that you use to grease your glass joints. Should be no reaction problems there, eh? The vent fan would require a little more engineering, and might be more difficult to replace. But with fans, slower and bigger is quieter. Perhaps one of those big white plastic house fans that people get for the summertime? Also with a larger fan, the frequency of the noise it generates would be lower, and less likely to pierce through to the microphone and the recording. And lastly, the remaining screaming roar in your videos is the aspirator. The solution to there is simple, just get a piece of hose about 12 to 18 in long and jam it on the outlet. Make it just long enough so that you can lay the end down in the sink, or put it right down in the drain. Or possibly just in a container sitting on the bottom of the sink to catch the water, after which it can gently overflow and then go down the drain. Peace out bro, keep up the good work.

Great video. Seems as though I arrived after the end. Hopefully, he returns.

we miss you Doug!

I miss you, and your videos.

I love your vídeos, i need them, NileRed does pretty good explanation and video editing, hope you get your patreons UP, you should do some promotion of your channel somewhere.

We miss you :(

GREAT VIDEO

Hope to see more videos some time doug

Hey, I love chemistry too!

Doug please come back!

Definitely too much H2SO4. I copied your prep this week also running it on the 1 m scale but reducing the sulfuric acid to 25ml. No issues drying it on the pump and it proceeded at essentially the same speed. Followed up with a re-xtal in hot MeOH to clean off lingering sulfuric.

I can't believe its been more than a year now

Doug, in another video not too long before this one you said you were going to produce videos more frequently but you haven't followed through. When can we expect to see more of your chemistry?

Hope all is good. Feel like, given the era, fate might have given us Doug's Lab > Cody's Lab had things continued.

Not again Doug. I have a heart, you know?

Thanks for posting. It's always fun to watch organic synthesis videos. I would like to ask, however, why you don't use TLC to monitor the progress of your reactions. It would make things so much easier IMHO. I spent my PhD constantly doing column chromatography and TLC and for some reason I haven't seen a single KZfaq chemistry person do either.

10:21, Doug, you're an artist. ( you'll probably catch the reference...)

Ay we have the same fritted vacuum filtration funnel! 150ml #3 medium porosity haha

Could you do a video on hardware? Cheap glass vs expensive glass, different brand mantles etc.

Pls, doug, i want to know how to prepare molybdenum oxalate and nickel oxalate. Thanks

Come back, Doug! This shit is mint

It has been two years... what happened to Doug? He was my favorite teacher...

Could this work as a replacement for Oxalyl Chloride in synthesis of bis(2,4,6-trichlorophenol) oxalate

Doug's mysterious disappearances cannot but remind me of Twin Peaks.

Really cool video! I thought the liquid would be way more viscous than it was

He's going, he's going, and he's gone ladies and gentlemen. It was a good little run while it lasted.

Are you going to prepare some glowsticks with TCPO?

I'll be watching this one later. I experimented quite a bit with oxalate compounds for a couple months and have been hoarding Oxalic acid since Bartell's was selling it buy one get one free.

Rip Doug again

where did he go?

where are the promissed videos doug ? we miss you :,(

Oh heck yeah

How come you used so little methanol? Isn't the standard procedure to use a large excess maybe x2 or x3 to strongly favor products?

where are you?

I'm sad, where'd Doug go again?

Please come back Doug :)

"as I'll be showing in some upcoming videos" gdi Doug

Make a video on Distillation of kerosene. I know it seems basic but very little info is available about this on the web

how do u know the rxn has almost completed after merely 10min on the hotplate?

Why do you leave the stir bar?

Love your videos. Please do a detailed video on all the glassware you have. Thanks for the awesome content.

I like the speed you're talking at! :D Sometimes I have to speed up a video because the dude is unbearable slow. Your speed is perfect. :) One question: Can you put a hose on the faucet or would that kill the vac? I never used an aspirator, but I think that could work. On the other hand, you probably would have thought of this before me. (Sentence seems clumsy... I'm german) :P

LETS SEE A VIDEO DEVOTED TO SOLVENTS!!!

Nice. If there's residual H2SO4, is it an issue wrt your intended experiments?

Would a Dean-Stark have helped to increase yield?

Can you make a video about wurtz-fittig reaction?

Please come back doug

Hello Can you please help me out by making a video on this. Have you ever seen any information on production of Tetraethyllead ? I can't find a good Grignard Reaction with all the info i need. With the dos and don't and whats needed.

We love chemistry, too, internet friend.

I miss you its been 3 years... 😢

I think I know what you have got planned for the dimethyl oxalate... I remember reading a bunch of old DuPont patents relating to it lol.

Taking this way further than Nurdrage did. I always wished he'd shown how to do this from scratch.

We miss you, Doug. I hope Chicago didn't get you.

Hope you're doing ok! I miss your videos.

Doug we all hope you're doing great! Does anyone know if alkylation of phenol can be accomplished using dimethyloxalate?

What watch are you wearing

What with all that upcoming videos, I watched all of tour videos already and I want more

Can u make Cyclohexylamine ??

Are you ok?

Hey Doug, mind if I ask what you do for a living? I'm unsure if you work in a chemistry-related field or if chemistry is simply one of your hobbies

Is it so dangerous chemical?

What is "transistorification"? Is that how transistors are made -- LOL. Thanks for another excellent video!

Hey Doug, are you alright? We are missing your awesome videos.

Someone should make a beaker that is slightly tapered outward so it's easier to remove products like the big cake at 7:35