NurdRage - 2009-12-06
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: http://www.youtube.com/watch?v=u4Ha1SJrazY 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: http://www.youtube.com/watch?v=XJFfS_YbbYI 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: http://www.youtube.com/watch?v=_rd8b6wNnKA 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.
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!
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.
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.
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?
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.
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?
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
Do you snort it? What am I watching. This played after another video I was watching
Recristalization, great technique. Thanks for positing this vids, you are really making a excellent service of inciting the love for chemistry on people.
Wht is
Would further dissolving and recrystalization bring more purity or is there a plateau effect?
This is the first explanation of the process of recrystallization that makes 100% sense and answers all my questions. Thank you!
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?
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.
Are you still waiting?
really cool method , and video, is there other ways to purify substances?
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 :)
Thomas Anderson 噢噢噢
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
They got spooked tbh
What is your equation for 20% of 50 grams = 10 ml?
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.
may I ask for a complete video with the ingredients needed and how to make it
Is there any place I can find a more specific crystalization procces for lysergic acids?
Malzeme listesini yazabilir misiniz ve nasıl yapılıyor
~3:00 it's funny that the first process was added 10ml(20%) and after 6.6ml
You can see clearly the mass loss
Distilled water and deionized water are actually equally good for this process (unless the American deionized water is not completely deioninzed *scnr*).
may I ask for a complete video with the ingredients needed and how to make it
is it possible to use the recrystallization method on pottasium nitrate and sulfur?
is the nano nitrate also can be use in crystalizing met
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?
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? :)
+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?
@Nathaniel James Lye is just another name for Sodium Hydroxide, do you mean that there is more Potassium Hydroxide than Sodium Hydroxide in wood ash? I haven't experimented with ash whatsoever so I can't comment on that.
Mixing Calcium Hydroxide with most Potassium substances (chloride, etc) will result in Potassium Hydroxide, but Calcium Hydroxide is rather insoluble in water making the process very unfeasible...
+pKai3 Actually if you are using Wood ash directly you have a combo of K2CO3 and NaCO3 as well as NaCl and KCL. You can use differential solubility to mostly separate the potassium carbonate and sodium carbonate. Heat it up until any precipate you have dissolves,
Then cool it in fridge until it starts precipitating out. Potassium's solubility is higher so the precipitate is going to be mostly NaCo3 and Nacl.
Repeat till liquid stays stable. Then allow to evaporate by standing or heating till 1/2 vol of liquid. The precipitate is your K2Co3. Take the precipitate and dry it. Next Heat To 891C where it melts, continue heating, this will create K2O. Allow to cool. Slake with water ( watch out exothermic!) Allow to dry, you now have KOH.
Similar process for NaCO3
Francis Roy You can tutorial how to make meth
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
When it comes to cooking methamphetamine, there are way to many impurities in the finished product to EVER get it to 99.9 percent purity. As he said in the video, repeating the process will increase the purity but lower the product. In the crystalization process of methamphetamine a bad cooks will complete the crystalization process atleast twice to guarantee a purity of atleast 40 percent for a bad batch. How ever, and good cook can do it repeat it once for a purity of 60-70%, give or take.
Hi
I don't know bro.... Some anonymous drug dealer from the darkweb who I've never met, says his meth is 99% pure. What reason would a complete stranger-- using an anonymous browser, with no chemistry experience, and from a field of employment not exactly known for their high standards regarding morality--have to lie?
interesting and informative video
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
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?
Someone answer this shit !
Is it possible to recrystallize red phosphorous?
Lotmom BG li si 😀
thx! very good video!! keep it up!
Can you synthesize crystaline methamphetamine please? Nice vid
You know, with all this amazing info alone the Nurd already has a strong following (almost cult-like). With the DVD, (I'll totally buy it regardless the price) that status will totally go past cult.
@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.
I've done a similar process with acetone,
Started with 1.5G and ended up with 430MG of pure product.
What were you recrystallizing?
Loolol
do you know if aluminum acetate is dangerous at all?
Thank you, I shall buy it once it is released.
@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.
Just found a presentation for my sons 5th grade science class. Thanks for the video
t88boost they use this with methamphetamines
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.
@BIG BLANCOIs that where the crystal in crystal meth comes from?
Chemistry is awesome, just like the narrator's voice of this video.
Love this channel !
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.
you can also use R/O water as long as the membranes and filters are high end.
Can you purify sodium acetate by recrystallization?
Great video. In another one, you made MnSO4, then it could be purified by this way?
It's Sully I havr besi
R dogs
Aren't they much less soluble in cold water than in warm water? Isn't the purity worth more than the little bit of the chemical that you lose?
ParadoxChem126 depends on unknown facts. impurities and prior exposure to anything else. but can go both ways
@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.
NurdRage - 2020-07-08
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: https://youtu.be/tItOOpyJP5k or sodium metal: https://youtu.be/BsNoiFj3wlw or even a nuclear battery: https://youtu.be/KKdzhPiOqqg
Anything! But not this video.
Christopher Lung - 2021-07-15
I agree
Blu BitS - 2021-07-30
Teach me how to make meth..
Joe Brad - 2021-08-13
Llpp
JC Simmons - 2021-10-20
@Every Mistake You Can Make not my area of expertise but I believe acetone is what you are looking for
Tim Markham - 2022-01-04
@Every Mistake You Can Make non mmm yû