I stinkin' love finding unicorn channels like this one.

Doug I love the way you do your videos, so informative and you give all the reasons why you should do things safely and how to do them. Thanks for making them.

Ah memories. DCM was probably the first thing I distilled. Such an easy distillation.

Appreciate the hell out of you going into the theory. Lots of videos explain WHAT to do, buy not WHY. Awesome video.

DCM is polar because of its tetrahedral shape. There are no opposite sides for the Cl to be on. The angle between each of the 4 substituents is 109.5 degrees

This episode needs an update considering the EPA made it so there is no DCM in retail paint strippers

I love how fast you talk. Thats pleasant

Just to eloborate on the point Nils Rotthowe made, the carbon is sp3 hybridized in CH2Cl2 and thus tetrahedral in shape. Due to the shape of DCM and the dipole moment of the C-Cl bond it s a kinda polar molecule that just doesn't mix with water. For example, the dipole moment (mew) for DCM is 1.55 and for isopropyl alchol mew is1.66. Keep up the good work, love the videos.

Dichloromethane is not hugely soluble in water, but it is somewhat polar (moreso than diethyl ether) and it will dissolve to the tune of a few tens of grams per liter of water (or vice versa for water in DCM), depending on the temperature. I understand that the intent of this video was to show an easy way to acquire a useful solvent (and it did a good job of that) but the simplification might have been excessive.

💜💜💜, please come back. We need you bro.

great video unfortunately DCM has been removed from paint strippers in the USA in 2019

Thank you so much sir! This video is a lot of help for my research methodology!

Good science Doug. Love the channel. I didn't have any potassium carbonate so I distilled. Also I took the initial distillation a little further, got "the goop" out. Then I evaporated the remaining solvent out of said goop. I'm 99% certain that what's left is nearly pure polysilicon. This stuff is a great additive to lubricants and is very chemical resistant. It's primarily made by Dow Corning in Michigan. Play around with it and see what you think, I'm definitely greasing up my saucer sled with the stuff this winter... I mean it's REAALLLY SLICK.

I love your videos and it's always great to see what kind of chemicals you can actually get OTC. But your representation of the CH2Cl2 structure is a bit off. The way you told it, the carbon would be square planar but since it's sp3 DCM has a tetrahedral structure so there isn't really something like "on opposite sides". Keep the expensive videos coming so my patreon account comes to good use ;)

these videos are priceless!

two vids in two days! :O quickly becoming my fav chem channel

I love the spoiler on the whiteboard at the end!

The whiteboard, that three,four methylenedioxy skeleton with a cho tacked on is the precursor to a very substantially valuable, truly mind opening substance that is worth taking. And synthesizing it then becomes why you begin learning organic. Come to find life is deep and science is what its about!

Love the shorter intro haha. Great vids as usual :)

I would love to live near "the hardware store" in your town.

I really miss Doug’s lab

your cool people bro, advice i learned: keep it simple, and dont make ridiculious choice unless fun is involved

You can see how much methanol was in the distillate. At 6:43 the water layer extends just to the bottom of the label "500 ml", whereas at 7:46 the water-methanol layer extends well below the label "500 ml".

Late to this video but that is a really cool pressure relief on the top of sep funnel, never seen that before

That so called polymer goop might be methyl cellulose, I don't know how you could test for it or what you could do with it though. What's with the 1,3 benzodioxole in the last scene? I can't help wondering how nice it would look with n-methyl-propan-2-amine attached in the 5 position...

I worked with it to clean wavesoldered PCBs and we sent the dirty stuff back for re-cleaning.

I love your work Doug, please keep it up 👍🏻👍🏻 Any advice on what to clean a BF with, if one waited too long to remove the residuals and they began to dry and cake the walls of the flask?

Like Cody, only Doug.

so cool

Hello Doug, I was wondering if Dichloromethane reacts with Nickle? i am bonding some plastic with Dichloromethane and plating after.

Making methylenedioxy benzene i see? I would LOVE to see a video on piperonal.

what is the condensing media used to cool the vapours and temperature of the medium

If you're in the US in 2020 looking for DCM in the hardware store, you're going to have a hard time finding it - the EPA just banned DCM in commercial products.

could you carefully add an alkali metal and make alkali methoxide? would this be a way to get the methanol out, and clean up the azetrope?

+Doug's Lab you should have used a larger sep funnel because it was too full giving the DCM smaller surface area making the washing steps less effective

Any advice on what to clean the BF with if one waited too long to remove the residue whilst hot and still somewhat fluidy? NaOH solution work okay? Ive done this before it works quite well, so thank you Doug (i love all of your work brother, please keep it up👍🏻👍🏻) , but last time i was smart enough to remove the residue rather quickly. But say one waited too long and the residue lost its fluidity and began to cake on the flask?

I'd like to see a synthesis of dibromomethane or diiodomethane by the Finkelstein reaction.

Hi Doug. We have purchased pure Dichloromethane for a solution of paint stripping, we will try to keep it enclosed to stop evaporation as it will do it simply on a hot day. Is there any other solution we should mix with the DCM to make it a better product for our shop, we will strip parts by immersion, not by spraying in the open air. Thanks

How did you clean up the polymer? Nice vid!

The flooring business uses DCM mix to clean carpet glue off tools and the edges of the carpet. I'm fairly sure the most common product I used had the polymeric goop and DCM w/o methanol. Just another source if any other floor-installers/amateur chemists have some laying around. I forget the number commonly assigned to the compound. - TVC

Okay this has been confusing me for awhile now. The central carbon is sp3 hybridized yes? Meaning it forms a tetrahedral shape with its bonds. This would mean that there is no "opposite side" for the chlorines to bond to seeing as all of the bond angles are identical. Now I am aware that steric interactions are going to cause the chlorines to repel each other, but is this really strong enough to consider the two adjacent bonds as being "opposite"? This maybe just a slip of the tongue on your part (if you're Doug currently reading this), but as a student I just want to clarify for my own understanding. -Thanks

Did you get that separatory funnel from Aliexpress?

Would you not want to dry/distill the methanol for use as a solvent or is that not a good idea since it has been in contact with dichloromethane?

A question. is it possible to rebuild the cap of the can and use the entire can as a disposable boiling vessel to get as much yield without a messy cleanup? or is there a good reason like possible contamination that can occur?

Paint stripper with DCM contents above 0,1% is illegal in my country😓

you can use solid sodium hipocloride to make the reaction?

Thanks for your very informative videos. I really enjoyed watching them! I am just curious, are you working without a mask and a fumehood? As it was a moment when you hold a flask with methanol+dichloromethane, flask was open. So you could simply breath vapors which are toxic, expecially from methanol?

after watching this, i went and researched how DCM is made and it went as far as learning how to concentrate CO2 from atmo using potassium hydroxide and calcium hydroxide, then turning the captured CO2 into methane using the Bosch reaction, and then chlorinating the methane into DCM at 400 C. fun stuff. side product is HCl which is useful

hang on, are you saying that the carbon in dcm is not tetrahedric?

Lol i had no idea about the recent ban of DCM in consumer (but not commerical) by the EPA until i needed some DCM and found no products containing it or advertising it as NMP or methylene chloride free. I went to a few hardware stores to check and even the brand that I used to use, changed it's formula... Even Klean Strip changed theirs...

If you add a layer of water to the DCM would it prevent it from evaporating?

any reason for dont use cacl2? nice lab n.n

Outside of heating, is there any way to turn dichloromethane into something less toxic or neutralize it to be less of a hazardous material? There is some MC/HF acid-based paint stripper leftover from a tenant and I was curious about either putting small amounts onto a tray on a hot day or reacting it with something "neutralize" it. Thanks for the video!

hi can you please make a video of the vacuum distillation of essential oils? thanks

You are missing things like once you didn't suply nitrogen during distillation and always use molecular sieves to store DCM longer.. P2O5 already absorbs water so no need to do separation further via funnel.

I've heard that paint strippers with dichloromethane are banned in the EU and could be banned in California

X: So what did you do last night? Doug: Ah, usual stuff, a nice round with a stripper…

well done son

how are you responsibly disposing of your chlorinated waste? or perhaps heavy metal waste?

that last reaction looks interesting... 👀

Nasty shit. I use it at work.

In the beginning when you said you wouldn't need the thermometer because it wouldn't tell you anything: wouldn't it be handy to know what temp. the vapors are at so you know what's distilling over? I know methanol has a much higher boiling point than DCM, so why wouldn't that be a good thing to know?

Cool experiment, but I just bought a gallon of lab grade. I use it to solvent weld 3-d print components.

can you use any carbonate salt? Thanks!

Why do the methanol separation in the sep funnel? Seems tedious. Why not do it in a large Erlenmyer w/ a stir bar and copious water, with the sep-funnel only for separating the layers?

Wouldnt the potassium carbonate not remove all the water if it was clumping together like that?

How did you manage to get all the goop out of your flask? I can get most of it out in mine, but there is still residue left.

Why not dry with some magnesium sulfate? Is there some unique property with potassium carbonate?

nice

How cold was the condenser

how pure would this be? how far from pure would it be for use in extracting cinnamaldehyde via distillation and then used as a fragrance (i.e. comes in contact with skin or inhalation)

Can DCM be used as a refrigerant?

Any idea what polymer is in the polymeric goop? Maybe a polystyrenic type, maybe some byproduct of styrene production. On a similar note: PVC glue is a good source of THF, it is thickened by PCV dissolved in the THF.

I hate to be a wet blanket but you can buy laboratory grade methylene chloride or dichloromethane from Carolina chemical supplier for about $11 for 500 ml. Last I checked that can of klean strip you used was about $25 at Lowe's You stated you wanted to have this on hand because it's a very convenient solvent to have on hand for many reactions so it seems a little bit of a waste to perform this reaction. I could see doing it if you had maybe a half a can leftover because it does not store well to just have the solvent on hand it's much cheaper to buy it from a company like sigma or Carolina

is it hazardous?if we mix in water then drink the water is it poisonous?thanks

Sadly, dcm is no longer used in the US paint stripper market. Dangit

It's getting a lot harder to find paint stripper with DCM, at least in Michigan. Is it possible to make DCM in the lab?

Wouldn't plaster of Paris (calcium sulfate anahydrous) remove the water better?

great teacher

finally a video on how to make DCM!!

amigo como esta soy de Venezuela yo quisiera elaborar en el laboratorio el producto Diclorometano qué productos se debe utilizar y en que proporción.

Doug, I have a rather beginner question that I hope you will answer. If one were to have a 2L sized heating mantle with magnetic stirring option, would I be able to also use smaller boiling flasks ( 1L, 500ml 250ml) in the 2L sized mantle??? I see so many different kinds of mantles in different sizes, I was hoping to not have to buy more than 1. or perhaps would having a big hot plate with stirrer be better, in conjunction with an oil bath? Please let me know when convenient, thank you for your excellent videos, I’ve learned so much! -alex

Are you going to to methylate, catechol? I noticed it at the end of the video.

Hey could someone please tell me how/if you can separate petroleum and methylene chloride, there’s a local paint striper here that contains methylene chloride but also petrol and I Seen they have similar boiling points

Would sodium hydroxide work instead of potassium carbonate

Hey, anyone please can put legends on this video? I m Brazillian and I still need CC :/

I thought for a sec that i had the vid settings set to speed up the video... But it turns out that you just talk really fast, lol

07:28 Where does this pressure come from?

"the chlorines are on opposite sides" ???? It's a tetrahedron my dudes

A method to make DCM rather than extract it would be nice as DCM now is banned in all things in the hardware store.

God i hope you're getting every red fucking cent now. Hey, get paid brother. I've got ten seconds for you,I mean ten lousy seconds to see 2 ads that will keep you going? Fuck yeah

i thought the price of paint stripper would be more than purchasing pure DCM? Or is it hard to buy pure DCM?

DCM is gone from all shelves as of 1/1/2020. Very unfortunate this video is now obsolete as I literally just planned on isolating some. Better stock up on most types of store bought solvents. MEK is another along with Xylene for that matter that are gone now too :(

Shame you can’t get DCM paint thinner anymore these days

A loose plug of cotton in the funnel will go a long way toward keeping the dessicant out of your product.

The left over polymer crap in the boiling flask is problematic in its removal. I read someplace or saw something that said that kerosene will remove it. When I used kerosene to try and remove it , it did not work. I used some tetrachloromethane (aka Brakekleen) in its can and that sorta worked but still didn't break it down very well. I finally used some very hot water and Dawn dish soap which helped but I still had specs of that shit stuck to the sides of the flask. I got it out finally by mixing up about two tablespoons of sodium hydroxide in cold water, and let it set for a couple of hours. Btw, HCL never phased it either. I also used Kleanstrip paint stripper. My can of it was almost straight DCM and no methanol. I washed it with water and couldn't extract any methanol from the wash water. Not to say it didn't contain any, just that the percentage in it was very low. This is a great video, I'm just relating my experience with this process. The problems with videos like these is that the makers of them leave out some minor details like how to clean up the mess this process makes of your glassware? I hope my procedure for clean up helps.

How about a synthesis route? You get none in germany, because of health limitations. Also, Acetone is a watched Chemical (Anti terror laws -_-), often hard to get, so Chloroform is neither cost effective or prepareable in useable Quantities.

At the end you wind up with a mystery brown bottle with mystery liquid in it. Surely you label it. Could we elementary learners hear and see How you make and use labels. And further, how is your pantry of materials organized. Alphabetically? By size? Could be a video.

Seems like it's hard to get a hold of this kind of paint remover today. They all advertise _"methylene chloride free"_ now... :-( *EDIT:* Well, turns out that last year (2019) the EPA banned the use of DCM as a paint remover... that fucking sucks. Apparently there were too many dummies that didn't read the safety label and used it for extended periods in enclosed areas with no ventilation or respirators... and passed away. That sucks that people died, but the report said they found 13 deaths since the year 2000 that were likely caused by DCM paint remover... This may sound cold, but honestly, thats not many deaths at all. I would think that the replacement paint removers that are now much more flammable will result in _more_ deaths. *SOURCES* 1) www.usatoday.com/story/news/nation/2019/03/16/methylene-chloride-epa-bans-chemical-used-popular-paint-strippers/3190041002/ 2) msutoday.msu.edu/news/2012/msu-investigation-links-deaths-to-paint-stripping-chemical/

here in poland you can buy 500ml of DCM for 4 euros