How to Purify by Recrystallization

We show how to purify aluminum nitrate and strontium nitrate by recrystallization. This is important because those two substances must be extremely pure for our upcoming video on making glow in the dark powder.
First make aluminum nitrate from our previous video: • How to Make Aluminum N...
Dissolve the dry aluminum nitrate in water and filter off any insoluble materials. We could not filter it off before it dried in the previous video because the particles at that stage are much too small. It needs crystallize once to aggregate into particles large that can be filtered.
After filtering, dry off the aluminum nitrate. The desiccator bag might be useful here: • How to make a Desiccat...
After drying, carefully weigh out the crystals. Then take that mass and add in 20% mass of water. So if you have 50g like me, you add 10g of water (or 10mL since density is 1g/mL).
It won't all dissolve, so carefully heat the mixture until it dissolves. Then cover it and let it cool down. Eventually it'll crystallize out purer crystals.
After the mixture cools to room temperature, and left for a few hours. The liquid is poured off and discarded, it has the impurities and is not needed.
The crystals are again weighed and once again they are recrystallized with 20% water.
Once this is done. Dry the final product. I started with 50g and ended up with 17g. But now it's very pure. Better than 99%
Strontium nitrate also needs to be purified. But it's solubility doesn't change that much with temperature so we'll have to purify by slow evaporation recrystallization rather than thermal cycle recrystallization.
First, make strontium nitrate like our previous video: • Make Strontium Nitrate
Once again, dissolve it in water and filter it. Then let it crystallize. But before it dries completely, let the liquid reduce to about 20% of it's saturated volume. So I started with a saturated solution of 10mL of strontium nitrate, i then waited until it evaporated down to 2mL of fluid. The crystals are not included in this assessment. Then discard the liquid. Repeat the recrystallization process.
Once again, use the desiccator bag to obtain extremely dry chemicals.
We are now ready to produce glow-in-the-dark powder.

[@NurdRage]

Why in Einstein's name does this have millions of views? It sucks. Seriously, i'm the guy who made it... and even i'll tell you; it SUCKS. If you want something actually COOL, watch me make glow sticks: kzbin.info/www/bejne/qnrXgIKmrq-Da80 or sodium metal: kzbin.info/www/bejne/eKSxoJx8n5iqotk or even a nuclear battery: kzbin.info/www/bejne/gXzHq5uGnrSkp8k Anything! But not this video.

[@EveryMistakeYouCanMake]

Hey boss, do you know how to recrystallize menthol crystals? I have a video I'm making that about meth, and the crystals I got in the mail today were liquefied. I froze them, it was a cloudy gummy mess. I melted them back and let them sit in a bowl to get to room temp naturally, but it all looks terrible (no crystals, just... I don't know, gross). Really need some help. Please respond as soon as you can. Thank you so much.

[@jonross377]

@@EveryMistakeYouCanMake What does menthol have to do with meth? Just curious. You probably would have gotten a reply if you had left out the meth part...

[@EveryMistakeYouCanMake]

@@jonross377 You are probably correct, lol. Looking back, my whole question looks suspicious. Alright, so meth, specifically the version known as "ice" looks very similar to menthol crystals. My channel on KZbin is dedicated to helping parents and children know everything about drugs. No scare tactics, just truth. In the first video I'm making, I need a substitute for meth because I don't want to actually go purchase meth. It's incredibly easy to get, but I don't want to put myself at risk anymore. Even just possession of the drug is a major felony. The script for that first video, for the actual show, is so powerful; the imagery needs to perfectly align with it. Thus, I need something that looks like meth and the menthol crystals that Amazon dropped me off yesterday, melted :(

[@jonross377]

@@EveryMistakeYouCanMake I just looked up meth crystals and menthol crystals and dang, they look EXACTLY the same.

[@EveryMistakeYouCanMake]

@@jonross377 Yep. The menthol shards are slightly skinnier and longer, but for the most part, that's what looks like. I hope the owner of this channel gets back to me. I need to get this done asap. I have no idea what I'm doing.

[@NurdRage]

@myrdale I tried that but the purity just wasn't good enough to make phosphorescent powder.

[@98JMA]

What we have are solubility tables, which tell us the solubility of our compound at different temperatures in different solvents. We look for a solvent where the compound has low solubility at room temperature (or colder) and high solubility at hotter temperatures. This is ideal, as the crystals will come out when the solvent cools from being heated, purifying them. This is the general idea of recrystallization.

[@baguazhang2]

Thanks for the help. I'm purifying azides in different solvents and it's working well so far. I just added a bit too much solvent and need to evaporate some off.

[@NurdRage]

@personperson666 While it does improve the crystal growth somewhat, eventually you reach a limit where the size is dictated by other variables like size of the container, temperature, humidity, etc.etc.etc.

[@hyperbob101]

hehe i am following along with everything you do. right now i have lioke 5 glow sticks i made using your steps that i haven't even broken

[@milotickz]

Of all the scientists on youtube, you NurdRage, are the BEST!!!

[@CannaPlant]

This is the first explanation of the process of recrystallization that makes 100% sense and answers all my questions. Thank you!

[@NurdRage]

@mafl25 yeah, but it's now chock full of impurities. After all, to make one portion purer the impurities have to go somewhere. Just save the discarded liquids and dry them. If you can find a use for them that isn't sensitive to impurities then go for it.

[@NurdRage]

@tzermaan I'm actually trying to put together such a DVD myself. Once i have a few more videos, as well fix some mistakes and edit a few issues, i'll release such a DVD directly.

[@ThomasAndersonbsf]

have you done a video on hydro-thermal synthesis? would be interesting but for video it would probably have to have a thick fused quartz chamber walled system to be able to see what is going on, which I am not sure could handle the chemical reaction of water at excessive temps trying to dissolve it like say it does for aluminum oxide for growing sapphire crystals :)

[@Pipewing]

You make some great videos. I do wonder why you didn't heat the strontium nitrate just to speed evaporation. Where do you find solubility vs. temperature information? or is it something you just remember from doing so much?

[@drahyden]

Recristalization, great technique. Thanks for positing this vids, you are really making a excellent service of inciting the love for chemistry on people.

[@bahaaamarat6603]

Wht is

[@NurdRage]

actually you needed more water. the 1/5 thing only works for aluminum nitrate nonahydrate. for potassium nitrate you need 1/3 its weight in water.

[@sulkarnaink7160]

may I ask for a complete video with the ingredients needed and how to make it

[@gregorteply9034]

I love him saying "product" all the time.

[@NurdRage]

@fedaikn the crystals are pure enough for the synthesis of phosphorescent powder. And you do get rid of most of the liquid, and thus of the impurities, when you decant off the liquid.

[@metalhead0jtk]

I have some Strontium Nitrate from an old road flare (I suspect it contains some sulfur too) and it doesn't seem to dissolve in water at all, blame the sulfur. How can I purify by crystallization with something that is hydrophobic and heat sensitive? Thank you

[@NurdRage]

MnO2 isn't soluble in water so it requires a chemical purification process. if i make ask, what do people use MnO2 for other than an h2o2 catalyst? if the use is interesting i might do a video on it.

[@NurdRage]

i was already planning a few more combustion videos (including kno3) but i've seen channels taken down because they showed that sort of thing. i guess we'll just have to see.

[@siamhossain6357]

How can I purify ketamine Crystal?

[@NurdRage]

@renatadevin The sun?

[@apostle333]

I love you’re methods, and I rarely (if ever) disagree) however I’m at a loss as to why deionized water is less efficient? I have a few ideas, but they just seem negligible to me. I’m curious as to what you might have to say.

[@spark893]

How do you know what solvents will be suitable for different starting products and weather they will require heat

[@jestermelender8082]

Can you do this with silver fulminate i am scared of mixing because it might cause an explosion or murcury fulminate?

[@trainwreck3697]

How do you know that what crystallizes is actually your product? Is it possible for some impurities to crystallize before your product does?

Is there any place I can find a more specific crystalization procces for lysergic acids?

[@dannynguyen123]

this video is perfect also i never seen any youtube video with a box video inside

[@themainstreamstereo]

when i did this the crystals turned back into the same white cloudy color. Does the Clarity of the crystals relate to their purity?

[@nomitech7197]

Hi Nice video Can you explain Me How many chemicals need for made this And how can is possible to get these chemicals. .please explain me

[@lotmom]

Is it possible to recrystallize red phosphorous?

[@lilshorty7945]

Lotmom BG li si 😀

[@lyndafromcazw2303]

What is it used for or what did you make I'm curious I only caught this one video.

[@jamesslater529]

Soap making is my hobby and I want to use ash extracted lye to make soap but I don't want to go through the trouble of cleaning the impurities. Is this method the most cost effective way to get purified potassium hydroxide, from hard wood ashes or am I just better off buying my lye at a store. I'm a cheap skate, that's why I want to know.

[@Joe-fb4eg]

James Slater uLtrasonic cleaner and diluted or deionized water

[@Joe-fb4eg]

James Slater no soap at all added when cleaning said impurities

[@Joe-fb4eg]

James Slater no heat either

[@chechebro1]

can i do this with mdma?

[@steadfast1984]

you can also use R/O water as long as the membranes and filters are high end.

[@jonnakutichaitanya4519]

Thanks for help

[@MARTELRA1983]

Chemistry is awesome, just like the narrator's voice of this video.

[@NurdRage]

@AkatsukiDesign Thanks

[@JamesAJ]

Am I the only one who's fascinated by this science here? Everyone else is disliking "cause Breaking Bad"...

[@mvrdamonxy7942]

ItsmeJamesAJ yea its really something.

[@deekay6902]

All I'm saying is 2 gases in Liquid form mixed with liquid pseudo and you are home

[@deekay6902]

It's up to you to find out what gases

[@StevenSchoolAlchemy]

This is perfect for me I've been working with copper nitrate and I plan to work with iron nitrate as well.

[@sammylopez7729]

I like the science behind that

[@Chemateur]

How do you prevent supersaturation? When I try purifying solutions by recrystallization, they seem to end up supersaturating and won't come out of solution until I introduce a seed, and it's not as pure when the crystals grow in a matter of seconds. Maybe these are different, I haven't actually made aluminum or strontium nitrate yet, but in general when recrystallizing, how do you keep them from supersaturating?

[@TzerMaan]

Thank you, I shall buy it once it is released.

[@ADH6]

Are you still using the same account is unbelievable it has been 13 years since your comment

[@rock2b28]

I have a question that really want it to be solved as i cant find its solution. Can the slow evaporation recrystallization process be done normally under heating to make it evaporate faster?

[@ThomasAndersonbsf]

+ROCKET&SCIENCE EXPERIMENT he said he cant because the extra energy of the heat causes an effect that effects the solubility stablizing teh amount that will dissolve in differing temps, and my guess is that there is a temp where it will change but that will either be over boiling temp requiring a pressurized vessel or will cause the salt to thermally decompose, or take on atoms from the water. destroying your salt too.

[@timheavyable]

Richard priors favourite video apparently.

[@love.88bdhjte]

can it be smoked like crystal?

[@Psycotic.]

question if the contaminants can crystalise out before the chemical you want does cant you pour the solution out then crystalise that?

[@NurdRage]

@ryan50ryan simply let it dry. But it will be chock full of impurities, and useless for making glow powder. If you have other uses that can tolerate the impurities then go for it, otherwise its best just to discard it.

[@AnyerPablo]

i want to ask if i want to make 100kg kclo3 what steps should i do?

[@user-jf2wr5lv3g]

👆👆look up that handle, he ships swiftly, and he got shrooms, Dmt, lsd, mmda, psilocybin, adderall, morphine, edibles, fentanyl, cubensis, meth, gummies, SSRI, chocolate bars, he's got a lot.. 🍄 💊🍄🍫💯🔌

[@marox3G]

Very good video! Could you explain the purification and recrystallization procedure if it is not a problem? I have kclo3 obtained from sodium hypochlorite! Thank you in advance!

[@eb6090]

السلام عليكم

[@NurdRage]

interesting, i am putting together a video on how to refine manganese dioxide. It requires nitric acid or sulfuric acid though.

[@billytalentrocks345]

Will this method work for sodiumacetate trihydrate? Well, I maybe have to get rid of the trihydrate thing, making in nonhydrate (correct spelled?), but how do I do that?

[@methgirl2067]

Love this channel !

[@johnapplesmith5558]

Can you synthesize crystaline methamphetamine please? Nice vid

[@goldentiger1266]

Instantly Subed after the first few sec of this vid!

[@josipivackovic8372]

Instantly subed after seeing your comment before ad was finished

[@moonlight-yp1kx]

How is methcathinone made? please help

[@samdavies677]

Would this prossess work with cladestine made ketamine hcl

[@fedaikn]

there is still liquid coating the crystals, even after the second purifying step. i think that one will not get rid of impurities unless one gets rid of the liquid phase. could you get rid of that by washing the crystals in a filter with some ethanol or isopropanol?

[@ambition9132]

Spoken like a true 2weaker. Lol JK jk

[@NurdRage]

@Pipewing Generally, the slower the recrystallization is done, the purer it is. Sometimes you can come across the solubility tables in the literature, other times you just have to try it yourself. :)

[@Bombermanos]

Will this method work with technical grade KNO3? Thank You.

[@flashplayerplugin11]

What is being used to filter it? That white cone shaped thing

[@jarheadwithm16]

Can you purify sodium acetate by recrystallization?

[@TheBomb2012]

Easy to apply to my application, wonderful, see yall on mars

[@SLIXICK]

Im curious could this method be use to extract Thc from plant matter and then crystallize it.

[@maggiep9007]

Most potheads just spray lighter fluid through plant matter, then smoke the crap that gets dissolved and shoved through. They call it "butane honey oil" if I recall.

[@Barskor1]

You can reclaim lost product it just takes work. you gather all the solution you poured off in the initial purification till you have enough to again filter and recrystallize. This is only cost or time effective when you do continuous or repeated operations of the same kind.

[@reinerdursten8027]

You have to take in the recrystallization basically 20% of the water volume of the substance? Or is that depending on the solubility of the substance?

[@jerinsema6097]

Someone answer this shit !

[@Ori-lp2fm]

Try find something in the littature

[@MarcusTheReverent]

how do you purify or extract ammonium nitrate from fertilizer?

[@chrisdavies3686]

Okay bin Ladin

[@justwired]

I followed these direction perfectly

[@ChuicyProductions]

Would this work if you are trying to purify capsaicin?

[@coolliger]

Which method should be used to purify sodium nitrate?

[@cobrasniper555]

That would be something I'd like to do after the Army. I'm 18, and plan on going through college afterwards. I'm good with math and chemistry (organic as well). Any suggestions for classes or majors to take special interest in? Thanks

[@Spida-Jug]

Sheesh

[@johnthompson2646]

surely there is a solvent that will only specifically dissolve the NH4NO3 and won't dissolve those specific impurities, ya? Wouldn't that be better than losing all that product?

[@Khodazmoon]

Where are you man? I've missed your videos

[@halonothing1]

Would you be able to evaporate the strontium nitrate solution in a vacuum to speed it up? Or would this no affect the amount of time significantly?

[@dalerockzsmith1510]

Can you rewash using just water?

[@t88boost]

Just found a presentation for my sons 5th grade science class. Thanks for the video

[@TheBrunswicksfinest]

t88boost they use this with methamphetamines

[@maggiep9007]

We did this in 2nd grade. This is how you make rock candy. Just put a stick in it and you can grow a giant jagged lollipop.

[@simonhryhoruk1233]

@@TheBrunswicksfinestIs that where the crystal in crystal meth comes from?

[@darkpigion]

Can the purification be made any more efficient than this? It seems like allot of product is wasted.

[@feuerwerk1997hansl]

could you please tell me how much water i need for 100 gramms of bariumnitrat....and how can i find out how many water i need.....thanks

[@raphackerable]

interesting and informative video

[@artea1oo1]

is it possible to use the recrystallization method on pottasium nitrate and sulfur?

[@alekzanderkastrov1914]

Whoa there buddy :o

[@irxkep3349]

You can actually save the impure liquid that has been poured off and let it dry. This way you will have some pure and some impure product that can still be used in reactions that can tollerate impuritys

[@bonniejohnson5728]

They got spooked tbh

[@nikola96uf]

Can i vacum filtrate and dy of vacum instead of dessicator bag?

[@NaturalTreeHugger]

Awesome video.thanx

[@ssensasi660]

what's the material for the boss for methamphetamine

[@nikola96uf]

@NurdRage What means 90 % purity? For some tecnical chemicals like sulfuric acid are 90 % purity. I have technical grade H2SO4 and i did titration and it was 95 %. how then it is 90 % purity if it contains 95% H2SO4? Other is water. Does that inpurity is 10 % of that 5 % that contains water in this case?

[@brandy1011]

In that case my *scnr* applies. If it still has (ionic) contaminants, it is not completely deionized. Note that the copper could also get into the water from the used reaction vessels, spatula, piping, etc., not necessarily be in the water in the first place.

[@user-zt2dm9bj4c]

سلام ایا شما طرز تهیه کوکایین در منزل را بلد هستید؟؟

[@J14e11s87u]

Hi thanks a lot; your videos are helping me to finish my thesis actually I´m recovering metallic manganese from spent batteries but I have some questions How long does it take to recistalize MnSO4 ? and How much do I have to boil the solucion up (in percentage)? I´ll be waiting your answer.

[@jonross377]

Are you still waiting?

[@planeiron241]

@@jonross377 I'm curious I think I will wait too, gotta run to the store hope I don't miss sumthin

[@DEATH_TO_TYRANTS]

😂​@@planeiron241

[@Nerflover10097]

Does it put the lotion on its skin?

[@marhabarefinishservicepaki8207]

You are good man.

[@blink182chase13]

So being tottaly serious, cai i use this to puify lye? cause i got the drano crap and i heard its not bery concerntrated. Please answer..any one.

[@Sheynan55]

thx! very good video!! keep it up!

[@PPRstudio]

Is it work with RO water?

[@TheChemicalGenius]

I have a question. If you synthesize Mercury (II) Fulminate and you get a powdery sort of yield, can you crystallize it by dissolving it in ethanol,and using the same methods as you demonstrate in the video? I understand that Fulminated Mercury's autoignition point is at 180 degrees Celsius. What should I do? I would really appreciate any sort of reply

[@BennettStevens22]

Do you snort it? What am I watching. This played after another video I was watching

[@owowwazwaz1617]

@@BennettStevens22 good question

[@dadme1493]

how can i make crystal ice ?

[@johnnyakutagawa72]

wow amazing

[@ThomasAndersonbsf]

ok I think I missed part of what I was looking for here, in that I expected FRACTIONAL recrystallization. but this is not very clear as to showing this process, where maybe a mixture of several salts (like sodium chloride and potassium chloride,) were used to show the two different salts in their stages due to their varying solubility rates, causing one to precipitate out before the other, and each stage a method of identifying each salt as well as the batch where the last of one was precipitated and first of the next salt began precipitating out. (like using a UV lamp to effect the compounds maybe so it might take different salts for good clean clear easy to tell differential color fluorescing to show the different salts)

[@user-jf2wr5lv3g]

👆👆look up that handle, he ships swiftly, and he got shrooms, Dmt, lsd, mmda, psilocybin, adderall, morphine, edibles, fentanyl, cubensis, meth, gummies, SSRI, chocolate bars, he's got a lot.. 🍄 💊🍄🍫💯🔌

[@user-jf2wr5lv3g]

👆👆look up that handle, he ships swiftly, and he got shrooms, Dmt, lsd, mmda, psilocybin, adderall, morphine, edibles, fentanyl, cubensis, meth, gummies, SSRI, chocolate bars, he's got a lot.. 🍄 💊🍄🍫💯🔌

[@ThomasAndersonbsf]

@vanessa jones sells what? sorry but you lost me. I was talking about the methods for identifying things and how to get them sorted by solubility reluctance like the temp for condensing various chemicals from vapor,

[@matteointveld2685]

ok im not going to make crystal meth no drug cook just informational purpose only is can you do this for sugar salt baking sod or even meth

[@AZMALING]

@NurdRage what are you making next?

[@afifakhatoon9306]

Please describe a process of preparing potassium peroxymonopersulfate

[@starshock01]

After heating, placing the heated solution in the beaker into a styrofoam or insulating container will yield larger crystals but will take longer to cool.

[@Hasn-Aml890]

التعليق،قبل عشر،سنوات،،،الله يعلم ميت عدل😲😳

[@sozana_7]

@@Hasn-Aml890 أي هسه لكيت كلشي

[@Hasn-Aml890]

@@sozana_7 زين إذا نجحتي،بالتجربه،ذكريني،بحصه،منه،هههههه

[@FrancisRoyCA]

I've recently learned how to extract lye from hard-wood ash. I'd like to purify it as much as is reasonably possible to make a good quality soap ('cause why not?) Even though I filtered my liquidified lye using a microfiber towel (works reasonably well, when one doesn't have proper chemical filters,) I'm still left with a brownish/yellowish mess. How can a lay man like me clean this up?

[@MRBCGAMER]

Francis Roy There's honestly not all that much you could do in your current state. A coffee filter (or two-three stacked on top of each other) will give you much better results than your microfiber towel, but I suggest visiting hometrainingtools.com and picking up a simple chemistry set and some filtration apparatus. The combo will set you back a maximum of $30, depending on what you get. I would recommend getting one each 600ml and 250ml beakers, a medium size glass funnel, some quantitative filter paper, and a lab stand if your budget allows. Reply back or PM me if you have any questions, and good luck :)

[@FrancisRoyCA]

pKai3 A very practical answer. Thank you.

[@MRBCGAMER]

Francis Roy Sodium Hydroxide (lye) doesn't really recrystallize (its more of a goopy corrosive mess) all that nicely as shown in this video, so filtration is by far your best shot.

[@FrancisRoyCA]

Oh sure, but I wanted to make soap from absolute scratch. I'm trying to learn how to do thing without relying on parts of the world that I have no understanding of. Did you know that one can make one's own mayonnaise and not depend on the grocery store for it? :)

[@jamesslater529]

+pKai3 I was under the impression that lye from ashes was higher in potassium hydroxide. I have also read that potassium hydroxide can also be produced by mixing calcium hydroxide with the solution, which will precipitate calcium carbonate. Would you say this is true?

[@amjadali-ml2os]

purification of cobalt nitrate? ....please help sir

[@Helge129]

@MarcusTheReverent He has another video about doing that.