Making sunscreen from scratch
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- Опубликовано: 11 дек 2016
- This is a reupload because the previous video was stuck in 360p for some reason.
We are making some dibenzalacetone, which is a commonly used sunscreen ingredient. It is very good at absorbing UV light, so it's good at protecting us from the mean sun.
The next video will be the 4th in the aspirin/paracetamol series.
Other Videos:
• Benzaldehyde cleaning video: • Making Benzaldehyde fr...
• Cinnamaldehyde Clock video: • How to make the Cinnam...
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Nile talks about lab safety: • Chemistry is dangerous. 
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I’ve found your videos and they’re incredible interesting but also they’re amazing to fall asleep to. I swear that’s a compliment 😂
I'm glad I'm not the only one!!
I do the same thing! Calm voice and still entertaining enough to watch
Went to watch this to fall asleep to lol
Bro I was scared to say it but I literally put one of his vids on just to go to sleep
Exactly!!!!!!!! God I'm so happy to know I'm not the only one lol
Having lower yield than expected due to multiple recrystalizations is kind of a running theme in your videos, I love it
That's actually a pretty common problem with chemistry.
You always get a lower yield when you want very pure products.
@George I. Klapsides I'm no chemistry expert myself but I think it's something to do with removing contaminations
@@bowel_movement nile red has a whole video about recrystallizations. And your correct
If you consider the 85% expected yield, times two recrystallizations…
100x.85=.85 first pass
.85x.85=.72 second pass
So a theoretical 72% compared to the 70% actual is negligible.
That orange juice looks pretty good.
50th 'like' :)
Cursed comment
Yummy
I tasted one once let’s just say…
It was a little weebish
Mmmmm tangy😂
Hobby chemistry in a nutshell:
"This synthesis uses A, B, C, D and E. The first four can be easily bought, but E needs to be distilled from F and G. F can be bought but G can be made by reacting H with..."
Awesome to see you work through all these prerequisites throughout various videos though.
then there's J, which can be bought, but doing so will put your name on a list at the DEA and FBI.
@@kadergumus2598 Now you need a different A, B, and C. A and B are about 50 cigarettes each, but C can only be purchased with stamps, so you need to synthesize D to sell for stamps. To get D, you can either have a guard smuggle it in, synthesize it with B, E, and F, or recruit some fellow inmates to acquire it from some other inmates. YMMV though; my yields have not been great.
It all comes back to benzene
h
That's what makes it so fun! lol. I started amateur organic chemistry as a hobby, and I'm pretty surprised at how many of the "restricted" chemicals can easily be made from the non-restricted chemicals with the proper safety setup and procedure.
4:22 instantly turning apple juice into orange juice
He’s juice Jesus
Juiceus
gUlPy GuLpY
Yum 😋
I love how he's not affraid to say when something doesnt goes as planned, and also the fact that he will keep trying until he get the results he want while also showing previous fails. I dont even love chem that much but he makes it so interesting that i keep on watching more and more of his content
Dịch
NileRed stands for “No, I Love Endlessly Recrystallising Everything Dammit”
you're actually a genius
😂
I have no idea what's going on in any of these videos, but seeing the little tornados bounce around in the beakers always makes me happy.
i thought that was just me! it reminds me of those little dancing fruits
The little tornados were 2x trans running after a cis apparently...
@@Hippucytees life imitates life 😉
@@s4ify It does...
@@bbrixnnx The little dancing fruits were 2x trans chasing a cis..
Spf 3 is no small feat. You made sunscreen from scratch in a home lab, all by yourself, and it actually worked.
Even black people like me are recommended to use a much higher spf than that
@@NyanyiC yeah, but considering most homemade "sunscreens" have an spf of 0 or worse, can worsen burns due to being comprised primarily of oils, I'd say that's pretty good.
Could’ve just used raspberry oil with that spf lmao
i mean... to put it into context, the skin of the average caucasian male has an innate SPF of 3 to 5
@@blubberdust what would a ginger be? -100? My sister and bro are ging, they both burn in the shade and she got a sun burn through tinted windows on a coach bus.
6:00 science diagrams that look like shitposting
trans trans is a lot more stable
It really does 😌😌
Here i go questioning my gender identity again!
hehe trans juice
Wow, your videos are so much better now that I took an organic chemistry class. I actually understand what's going on! (mostly)
I wish I could take a class like that but since I'm not interested enough to take a class. I just learn from his videos..
Cookie Roxy same
Cookie Roxy well im interested but i dont feel i need it
@@supercool1312 i just cant be bothered to pay for one
@@emmettbattle5728 I just straight up cant... should have shown I could do better in high school
I'm in esthetics school and this demo for how sunscreen works with the beads is perfect to help students understand how chemical sunscreen works in absorbing the UV light. Thank you for your awesome videos.
You should make aluminium zirconium tetrachlohydrex, the main ingredient in anti-perspirant.
Nilered be like: chemistry hahahah potassium and water boom boom boom I want you in my room
What the hell, how do I keep discovering new NileRed videos I haven't seen before? It's like Christmas!
The 4k is so awesome that I can see all the filth on my monitor.
I just realized the same thing is happening for me, but on my phone XD
Did you clean it yet?
SPF 3 is a common absorption level for stuff like lip balm, so it’s not that bad
Dibenzylidineacetone (DBA) is actually used to stabilize Palladium(0) in the form of Pd2dba3.CHCl3 which is useful for a number Palladium-catalyzed coupling reactions.
Georg Wuitschik
Nerd
does anyone know why pd(oh)2/c might be a better catalyst than pd/c for carbonyl compounds such as esters and acids?
i'm assuming it might have something to do with h-bonding
And it forms a beautiful dark blue powder.
I remember while in the police academy, for 6 months I was staying up all night writing memos and I successfully watched every video you ever posted while I was writing. I love your videos brotha
To avoid canizaro reaction , you can mix the aldehyde and acetone then add the base slowly, so base attacks the acetone which attacks the aldehyde
In my research lab, we usually have a designated hood with aluminum foil completely covering the window, and protective eye wear when using UV light. Make sure you be careful, because it can mess up your eyes really bad even when used for a short amount of time.
I did this reaction in my organic chemistry lab class, and I used almost the same method you used in this video, although with some small variations.
Our benzaldehyde and ethanol was analytical grade, and we purified our acetone (technical grade) through distillation (to remove water contamination and other impurities). That could explain why you had that initial cloudiness in benzaldehyde, probably your benzaldehyde was not so pure. To recrystallize the product we used the first method you used, hot ethanol (in the right amount to dissolve all the product), then we added room temperature water (while ethanol was still hot) until complete cloudiness occurred and then we cooled down the solution in an ice bath.
Eventually we vacuum filtered the precipitate and dried it in the oven. My yield was 78,2% of raw product, 73,9% of target molecule (we analyzed it through GC-MS and UV-VIS). Not the best but I'm still and undergraduate so totally fine for me.
My guess is, as you already aknowledged in the video, that you used too much ethanol and much of the product was still in the liquid phase, though your yield was not bad at all.
I also did this reaction in orgo 2 lab :)
I don't remember what our yield was exactly, but I do recall our MP analysis showed that we had a higher percentage of trans,cis and cis,cis stereoisomers than the reaction might typically produce, though trans,trans was still the primary stereoisomer :)
@@XREXP0 nerds isnt an insult anymore, get on with the program
When he was talking about the trans and cis stuff I wasn’t paying attention and thought it was a video about gender and stuff
I love watching your videos when I’m stressed out it helps me put my focus on something else and they are so relaxing to watch idk why😅I’m so happy I found them!
Convert PET to terephthatalic acid and ethylene glycol! It's a simple de-esterification but it would be interesting seeing how you would get the PET to react with it being an insoluble solid at room temperature
When I did the synthesis, it actually went nearly like the clock reaction you mentioned. I dont know why does it happen, but it is pretty cool. I add the acetone and then stirr, and suddenly a ton of stuff falls out of solution after like 60 seconds and the content goes from light yellow to brown-orange and looses transparecy. Really interesting.
The mechanism is just too beautiful!!! Thanks for sharing!
Dang, that's really cool! The demo at the end was really neat too.
I listen to this when running
Another beautiful and informative video! You are great sir!
Thanks!
Dude, these videos are SOOOO well made! :D
your videos are so addicting I’ve been in a constant state of binge for hhhh idk how long
There's more plot in the beakers switching out "conspiracy" than in the entirety of the Twilight series
It cannot be a conspiracy if it's just one person.
Thanks for the enlightening discussion of using water to help precipitate the product from ethanol. Much appreciated.
I've made this myself in our labs and it is a very fun exercise. It's fun watching this change colour when you keep it in the sun.
Ilililllllilllllilllllllolllolllliil8llllollliilillllllolilllollllolllollillollolllloilllilloliliillllolloolllollllllllolllloolllolillolilillolololliolllioolllillloloolllllloollllolollolllllllolloollllollllolollllilllllollolllllllollllllllllllolllllllllllllllllllllllollllllllollllllllllllolllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllli
In this video he sounds so weary, like eternally tired.
The test with the uv light is so cool!
These are amazing to fall asleep to, thank you
Ahhh I love RUclips. I always know when it's been a month and a new nilered video is incoming, because I get recommended all of his older vids xD
I love how he makes jokes with a sorta sarcastic voice
Five years later and these videos are still solid
3:55 so that's how you make Mountain dew
woah Nigel sounds way more nonchalant in older videos. I kinda like it
Cool customized glassware!
I wish there was a creator making videos like this now of this quality.
Watching these videos studying in the 12th grade and being able to relate to most of the reactions is really fun
jej HD! I can seee now!
great vid as alsways nile :)
This is the exact type of video I was looking to watch tonight. I’m commenting right when the comments are at 420 so I think the universe meant for this to show up in my recommended.
Dibenzylacetone can also be used as an organic photosensitizer in certain photochemical transformations!
this is a great channel to watch when you need to fall asleep. i fall asleep instantly because one im not smart enough to understand anything he is saying and two like math? my minds like nah nah
You explain things better than my university teacher
i must say nile's voice is asmr
I love the 4k upload!! More 4k videos :D
Omg I'm a relatively new fan and this is the oldest video of yours that's been reccomended to me. Your voice over sounds so different :o
Definitely invest in a 1 or 2 larger fritted funnels with different porosities. I really hated when I had a huge amount of stuff to filter and didn't have a larger frit. I have some larger 1 liter ones now and it was definitely worth it.
You didn't seem too impressed with this video during the commentary 😕 maybe something was on your mind?
Thanks for yet an other great video... :-D
OMG sir, where have you been all my chemical life !!!
You and vsauce are what I watch before going to sleep I love it because I fall asleep and dream about chemistry or physics 😂
Really nice to see this after hearing all the diy sun screen horrors since I started getting into cosmetic chemistry lol
ALMOST AT 100K SUBS :D
Congratulations !!!!!!
Been here since 8k subs :3
Nile deserves a million subs. My favorite chemistry channel on RUclips.
mannys9130 Yup. I prefer him to nurdrage and others. Though cody's lab's chemistry series comes close. I prefer his metal extraction series and random weird reactions cody does.
i like nilered more for actual educational content, but codies chemistry stuff is very entertaining ... i dislike the shift in his "values"(?) towards grant thompson, so maybe you can collab with him to bring him on a more sciency path? :D
Maric I agree completely man. I use NileRed videos to revise for my chemistry practicals for school, since I take it at A-level. I think the equivalent to American education system is the AP tests.
I am german ^^
I watch NileReds videos as reference for pen and paper (dont ask xD) and out of curiosity mostly xD
Some of the benzaldehyde tried to precipitate out when it came into contact with the bit of water in the ethanol. The molecules quickly re-arranged themselves and dissolved in the ethanol afterwards.
You should make a channel for all the small experiments that you do to make the bigger ones, like prepping the chemicals
Nile blue
20 K views, zero dislikes. Pretty good stuff.
the thought of dissolving something without a stir bar manually by glass rod are the biggest nightmares of chemists
toooooo gooooood you are awesome man
Really enjoyed this!
One use I can think of is as a ligand for palladium catalyzed coupling reactions
NileRed signature laboratory glassware line!
I misread this as “subscribers”. Literally thought the madman was synthesizing more subs to the channel.
Muito bom o vídeo!! Arrasou!
I watched this whole vid just to see how you tested the final product.
Sometimes I perform what's known as the Arnold Palmer reaction and I react lemonadeythl with iced teaoxide, yeah I know I'm a chemist.
3:59 Reminds me of two things moutain dew and piss
go see a doctor
This channel should be used in chemistry classes.
I would love to see a video of yours on how those resins harden under UV light
Lol I love how many people watch his videos theyre literally just chemistry yet so entertaining, maybe Im a bit of a nerd and love cience related content but most science channels dont get this many views I feel like
I like your work
Continue
Awesum video keep it up!
that Moment when u get really exited cause u got a RUclips notification for a new nileRed vid but then u realize u already watched it on patreon XD
The reason why I watch these videos when I should make homework is because I use it as an excuse to not make it and I justify it to myself because it makes me smarter.
Jk. The REAL reason I watch these videos because the colors and pretty powders makes my brain give me dopamine
I like watching these because i havent a damn clue whats actually going on but its cool to see things changing into other things
Welp just when you THINK you have an original comment to post then see it's been posted over and over and over 😂 well at least we know he has some pretty freakin decent playtime or whatever it's called for RUclips...this is also my go to for background noise while doing work or having meetings..but.. Especially from falling asleep to these, watch it for hours! ❤️
If you put a vial of dibenzyl acetone on a zinc sulfide screen and exposed it to UV, do you think you could see a "shadow" in the phosphorescence? You could compare to a blank vial of solvent, a sample of commercial sunscreen...
And compare it to solution of titanium dioxide or something that's opaque but doesn't specifically block UV!
please do a video on your lab, and where and for how much you got yourr lab equiptment.
im wondering if the cloudiness was because of the 5% of addatives in your ethanol to denature it perhaps?
The bittering additives are usually in the ppm range. The rest of the 5% is generally water generated from the distillation process (ethanol forms an azeotrope with water at 95%). So, the 5% really isn't a huge concern. I'm sure if, after recrystallisation, the product was put on a high-vacuum line at RT for 24 h and a proton NMR taken the only residual protons that would be seen are from the ethanol and from water. The additives won't even be detectable.
good channel, good vid quality.
Ive made this last year in my undergrad organic chem lab
Nice video😊
That stir bar is fucking vibing
I am doing a research on the synthesis of dibenzalacetone, do you still have your sources? if so could you please share? Thank you for the video anyways
I searched for sunmade home screen and found home made sunscreen 😄🤣
I would love to ask something... I went through few laboratories at our university and we never put the watchglass on a beaker during recrystallization... The true is, that it was almost forbidden to use beakers for reactions, heating and so on... We could use it just for our solutions of acids, bases and salts. We were using just flasks for almost everything. I just want to ask, why there should be watchglass during recrystallization... Thank you for answer :)
Him Alpha hydrogen
Mean intellectual:Chad hydrogen
На сколько я в курсе, в солнцезащитных кремах для отражения УФ излучения используется мелкодисперсный диоксид титана.
As someone who bursts into flames on the beach like a fucking vampire, I found this extremely useful. not that I could recreate it, but one can dream.
Great as usual. However, I did notice one error: the reaction you give for the synthesis should produce two water molecules, not one.
Also, since you said that crystallization needs to be slow in order to be effective, and your failed first attempt apparently took a while, what do you think about your second one producing much better results after just three minutes?
It is chemist goals to have so many chemicals in your office that if you ever accidentally banged a shelf, all the chemicals will precipitate into carcinogenic, toxic, corrosive fumes.
How do the UV absorbing capabilities compare between the trans-trans, cis-trans, and cis-cis stereoisomers? Does one make a better sunblock than another?
13:51 the forbidden orange juice
Any good RUclips channels on intro to chemistry? I've found your videos very fun to watch, but I want to know more about the processes involved
I’ve learned more science from him than I have in my whole school years in total Lmfaoooo