Making Phosphoric Acid
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- Опубликовано: 19 фев 2019
- In this video I demonstrate how to prepare phosphoric acid at home. This will eventually be used in the synthesis of sodium hexametaphosphate and then phosphorus. If you enjoyed this video, check out some of my others and drop a like and subscribe for more!
Some activities demonstrated in this video may be dangerous to replicate and should NOT be attempted by individuals at home. While chemistry is very enjoyable, safety must always be number one concern and doing research is very important before trying the reactions themselves. This video is solely intended for educational purposes and should not be replicated in any way shape or form at home.
E-mail - thecanadianchemist@gmail.com
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Phosphoric acid decomposes at 156C and begins to polymerize, which is what you are left with. It takes a while to hydrolyze back into phosphoric acid again
That mysterious precipitate was probably produced from more-soluble monocalcium phosphate converting to less-soluble dicalcium phosphate.
What a pleasant comeback!
how to make h2so3
I’m curious as to how you disposed the calcium sulphate that precipitated
Wow! Quite interesting!
GREAT VIDEO........I always wanted to make 85% phosphoric acid. I did not even know pure phosphoric acid was a solid
Sir please send me
Recipe of phosphoric acid
Thanks
God bless you
@@raomobeen6514 .............I really do not know any more than the "canadian chemist" says in the video above. Is there something he is saying that you do not understand????????
Does the reaction depend on the solubility of Calcium Phosphate and water due to the presence of calcium ions that is partially soluble in water
Oh cool!, nice to see you back ^^
Hey it’s me your cousin Jacob I liked and subscribed
You should try recreating modern soda with it
I have a question if anyone knows I did this reaction but with "synthetic bone ash" from a local pottery place. Everything else has been pretty good quality there so Id assume the same here. I had a solution of bone ash some fine particles made it through the filter but whatever and I added the sulfuric acid and there was no precipitate in fact the small particles of bone ash actually dissolved leaving a clear solution. This was done on about a 2g scale.
so basically im doing the same thing. My bone ash turned black upon reaction with sulphuric acid. I got the same kind of percipitate after filteration. How can i be sure that the solution I got is actually phosphoric acid?
The precipitated at 3:20 may be indeed CaSO4, as it has retrograde solubility , and precipitate more as the Temperature increases.
keep posting videos, pls don't leave
Can you use that phosphoric acid in candies or sodas even though you got it from drain cleaner?
I wouldn’t use it for that just because the chemicals I used aren’t food grade, but in theory, you could.
quel verre utilises-tu?
j'ai cru comprendre que l'h3po4 attaque le borosilicate...
y à t'il un matériau resistant à cet acide et à la temperature utilisable pour faire du charbon actif?
I had the same issue with my nitric acid I made with calcium nitrate. After all the calcium sulfate appeared to have stopped precipitating I filtered and put it away the next day I checked it after waking up and it was clear but came back from work and more precipitate had come out again. It was at least another 3 to 4 grams so I was really confused but I just assumed it was more calcium sulfate.
You should form sodium nitrate of the calcium nitrate first, then distill with sulfuric. Just mix the calcium N with baking soda, then recrystallize in water, and a few hours in the oven. Now you have sodium nitrate. You`ll get excellent yields this way and only left with ferly dry soium sulfate in the reaction vessel (which is easy to get out compared to calcium sulfate which becomes like concrete and expands in your precious glassware.
@@kallah4999 the sodium nitrate method is my Ole reliable. Its actually the first video on my channel. Well correction potassium nitrate since I have like 10lbs. I thought id go through it faster 😂
You got such low yields because you were also forming pyrophosphoric and polyphosphoric acids which has way way higher boiling points. I don`t know if your heating mantle can take 530 C+ because it takes effort distilling polyphosphorics so you probably just got phosphoric at 158 C and the rest left in the original distill.
you are so good at this can you make us Potassium hexacyanoferrate
it is a boring chemical really
Ayee you're back!
I assume that first making sodium phosphate from calcium phosphate would be good ..
thanks
how many percent?
Hey, Mr. Canada, whats up? What happened to you? I am a fellow Canadian and enjoy all Canadian content.
Ok here’s I thought. Just an educated guess here but I’m going to say that the slight excess of calcium phosphate is slightly soluble in the strong acid solution. Likewise for calcium sulfate. May I propose two filtrations, then concentrate the phosphoric acid WITHOUT boiling then, after it cools, add ethyl alcohol as phosphoric acid is the only component that will dissolve in alcohol?
Actually phosphoric acid does not distill at low temperature - it just starts undergoing polymerization reactions to make polyphosphoric acids and water distills off. You have to get to 700C+ before any phosphoric acid starts to come over.
How do I make polyphosphoric acid just boil? Does polyphosphoric acid boil?
@@punishedgloyperstormtroope8098 It doesn't boil but when the temperature gets to 700C and over it breaks down into orthophosphoric acid, water and phosphorous pentoxide. If I recall from a paper read it forms an azeotrope around 800-900C that contains just over 90% phosphorous pentoxide. I have a pdf of the article if there is a way to send it to you.
@@mspalien phosphorus pentoxide? I highly doubt it would break down into that.
I need polyphosphoric acid for organic chem synthesis so I Guess I’ll boil it down over 160° until it’s a syrup
Have you heard of H3PO4 decomposing on keeping in cold environment ? I'm not sure is it possible but I have kept mine outside during winter and it probably decomposed, although I haven't checked it.
Don’t you think by replacing calcium Phosphate to Na3PO3 would be better I mean CaSO3 is a solid and could be pain on ass to clean the glassware
Aussie Chemist although sodium phosphate is easier to get, it would react to form sodium sulfate which is water soluble, and thus you couldn't remove it by filtration. I did try this, however the solution was much more challenging to distill later because the sodium sulfate crystallized out. Calcium phosphate works much better just because the calcium sulfate can be more easily removed
The Canadian Chemist there is a technique to remove excess sodium Sulfate by freezing the reacted mixture allowing Na2SO3 crystal to form then vacuum filter and distill it if the sulfate becomes a problem again just do the procedure once more this way you get high quality acid
Aussie Chemist huh, interesting, it certainly will be cheaper to use sodium sulfate as TSP can be bought anywhere for very cheap! Thanks very much! I'll look into it
What brand is that sulfuric acid based drain cleaner? I have a hard tine finding acid based cleaner at local stores (Home Depot, Lowes, etc), but I can find them online usually.
I may be able to find some H2SO4 as automotive lead acid battery electrolyte, but I hear it's very expensive (relatively speaking) and not the best quality.
Mine is super Albert brand from RONA. That’s the only place I’ve been able to find it before.
@@TheCanadianChemist Ah ok. I live in the states, and I can't find it _anywhere!_ I ended up having to buy this one online: www.amazon.com/gp/product/B07PG3NRRB
Haven't used it for anything that demands high purity H2SO4 yet, but it seems good.
Yeah, it can be hard to find. I’ll try to do a video on sulfuric acid production at home eventually.
@@TheCanadianChemist There are a few out there, some are easier than others, but they're all still more expensive than finding it and buying it online, even if its twice as much as it is if you were able to find it in a store.
How much was the product you linked from amazon in your previous comment? It won’t show me the price. I can get a litre of the sulfuric acid drain cleaner at Rona for around 13$ CAD.
Im having trouble making this. Used sodium phosphate and HCl and boiling and cooling. Just keep getting salt crystals. Threw some methanol into it to allow lower boiling and better salt insolubility.
Problem is phosphoric acid doesn't boil at low temperature yet my last run boiled down to NaCl. No thick white solution at all. I tried to boil off Ammonium Phosphate at high temperature, just get a nonsoluble white paste. 😢😢
Can corn starch be added to make a gel? Or possible Talcum powder? I know fumed silica is the to go route but it is a bit costly.
I think it'll just turn into a big polymer mess with corn starch.
How is this used to make cola?
I believe it is just an additive in many sodas.
End result reminds me of GHB
You cleared my big doubt!
Hey where are you man ? I am waiting for you.
Same here waiting for comeback
He's at University. (I'm his Brother)
@@matthewmunro8676 Ok. I waiting for his comeback..
But why is it so white? What caused that? Phosphoric acid is usually clear, not as clear as water but not white.
Is this the same stuff found in diet soda?? 🤔
Hi I am an element collector. I have currently 91 elements.
There's a good few of those in the stuff you breathe.
Came from ur sulfur video
Is this Phospheric acid? Bro
Second,why did u didn't made a video for ages
"I have no idea what I'm doing or what's happening but let me show you how"
Man... I wish we had sulfuric drain cleaners here... But we only have NaOH... Oh well, great to see you using more professional tools (unlike me... It's in my name). Are you using the knowledge of chemistry for a job? If so cool, if not, then.... Cool?
You could try using the contact process to make Sulfuric Acid?
@@bismuth4241 wut do u mean?
@@thecrudelab3204 Burning Sulfur in a container and then bubbling the Sulfur Dioxide into Hydrogen Peroxide
@@bismuth4241 nah, we don't have those here, I may as well but it from eBay or something, thanks for help anyways.
@@thecrudelab3204 Where do you live?
sir please help me make a formula for laundry laundry neutralizing ingredients using phosphoric acid during the last rinsing on laundry .. plsss please 🙏🙏🙏
Nice phosgene gas generator.
Okay, phosgene is COCl2.
He used H2SO4 and Ca3(PO4)2.
Tell me where the chlorine and carbon would come from lmao
Edit: You might have meant phosphine (PH3)
i love this acid! it looks so beautiful! like some horrible creature that shouldnt exist because its so vile
😂 I love it too
But my mind is empty so I don’t understand anything your saying
You know you could make H2SO4 from gypsum right??… and gypsum can be made from mixing Ca(OH)2 and the Na2SO2 in seawater.... The only issue is you need about 1100 degree C to thermally decompose it but if you have an arc furnace, then that will be a piece of cake....
Aetheon Pro I’m currently working in a phosphoric acid plant and there’s definitely gypsum piping as well as pond water piping.
There'a also phosphoric acid into Pepsi and Coke ^^ I'm sure it's less expensive
to retreive from that.
Looking forward to your extraction video, Monsieur Kebeck.
kid is awake at 3:00 aþ
That is wrong
came back from the grave?
You + men = gay