Making nitric acid for gold and silver refining.

In this video I demonstrate how to make nitric acid for gold and silver refining.

[@otilium7503]

The golden color is so gorgeous!

[@spencergraves989]

Thankful for you and your videos. I appreciate your precision and how this video describes the whole process with the upmost detail.

[@philipbender956]

Thanks, I am happy you enjoyed the video 🤗😀

[@prinz10ga]

Fascinating and very informative. Would love to observe first hand.

[@larrylaird91]

Thanks for the chemistry class and it's exactly what I am looking for fuming red nitric acid, I need it to make mucury fulminate which is very dangerous but if stored in water it is safe as long as you don't drop it.

[@ethicalhacker8887]

Thank you from Pakistan

[@gamingshortschannel1109]

Absolutely awesome information. I am happy I stumbled across a bright mind like you. Keep up the good videos. Can't stop watching them.

[@philipbender956]

Thank you, I am happy you enjoyed the video 🤗😀

[@S730SD]

In the same instance, I'd have added boiling water to the crude nitrate after putting it in the beaker; just enough to dissolve them. Might speed up recrystallizing & with less H20 to get rid of. :)

[@josephpecoul6532]

Im a Casual Observer and im on board thanks for the video.

[@philipbender956]

Thanks, I am happy you enjoyed the video 🤗😀

[@paulscottpadgett1996]

Much Respect 💪

[@ourodolixo-e]

Very good 👏👏👏👏 Nice👍

[@n.pisamoovung1822]

I'll have to give this a try. Thank you so much for the explain

[@philipbender956]

Thanks, I am happy you enjoyed the video 🤗😀

[@sreetips]

Nice work, I'll have to give this a try. Thank you.

[@tchouwie]

sreetips I came here because I usually follow you. I just wanted to reply so both of you know. You can make Nitric acid for free. If you take wood ashes as a source of potassium and your morning pee for the source of Nitric. You mix the two and boil that, the vapor that will come out as it boil will be Nitric acid. Just letting you know in case both of you didn't know.

[@sreetips]

That would make a very interesting video.

[@johnblair8146]

Sreetips, the beginning of this video reminds me of your videos about precipitating gold from chloroauric acid solutions only backwards. :-)

[@AbuBakr.Abdullah]

@@tchouwie wow did u try that yet?

[@craigmohammed8680]

88888980ijhyu9

[@NOFX0890]

Another great video Philip. Thanks for the info and thanks to the people in the comments for the extra tips. Id add something, not very technical, but a thrift store stainless potato masher might help with breaking up the Potassium Nitrate crystals. Love your Audio track man. Dont ever change your style.

[@philipbender956]

Thanks, I am happy you enjoyed the video 🤗 😀

[@anahoae]

You can make it from thin air and electricity as well Nice vid thank you

[@okay8632]

not so easy though

[@ismetbiljali9700]

Very nice Man thanks

[@jacksonvillereclaimedwood6709]

Great video dude!

[@philipbender956]

Thanks, I am happy you enjoyed the video. 🤗😀

[@camsmagnetadventures4030]

Thanks keep up the video man now I can refine some silver

[@philipbender956]

Thank you. I am happy you enjoyed the video 🤗😀

[@JK-zl7vv]

Very helpful brother 😎👍

[@mr.planter494]

You're a great teacher.

[@philipbender956]

Thanks, be sure to treat other chemistry channels as a class. You will learn more from many 🤓

[@mr.planter494]

Dude I love your videos

[@philipbender956]

😌😅🤗😎

[@najeebullahamjad8224]

Nice posting

[@johnnyx53]

Good video! Practical- esp when seeing the price of nitric online and the ultra-high expense of hazard shipping! You’re like paying double for it

[@thehatedones5153]

Distill battery acid, it’s cheaper and you can find it locally

[@chemistryofquestionablequa6252]

@@thehatedones5153that’s sulfuric acid, not nitric

[@shintokatana17]

Very nice, thank you for sharing

[@philipbender956]

Thanks, I am happy you enjoyed the video 🤗 😀

[@gwsmith76]

You should filter the potassium nitrate solution boil it until salt begins to form on a metal spoon or knife when it’s removed from the super concentrated liquid. The place in fridge for 4 hours, repeat process. Your yield will double if not triple, take less time and ultimately produce more nitric acid.

[@amrendramishra545]

Congratulations 😊

[@Berghiker]

When potassium nitrate dissolves in water, it is an endothermic reaction as the temperature drops.

[@gantz4u]

Provided you have all of the glass laying around. Cost break down for ingredients looks to be US dollar $17 to $23 here. Vs. $50 to $62 for roughly the same amount of purchased nitric(if they will even sell it to you) at these quantities, no clue how the cost break down works for 55 gallon orders but I'm somewhat doubtful the savings with this scale there. Mileage may vary on those ingredient prices.

[@tomspeed2000]

Is nice video, at the end I recommend to be use dark glass container instead transparent glass because HNO3, specifically at high concentrations forms will decomposing by the lights..

[@philipbender956]

Thanks, I am happy you enjoyed the video 🤗 😀

[@nurcahyani980]

Yes tangkyou mastter impormasi nya yes

[@philipbender956]

Thanks, I am happy you enjoyed the video 🤗 😀

[@legaia_2804]

Would any basic distillation kit work for this, or should I buy a certain kind? Sorry for my ignorance

[@jhyland87]

Damn... Those crystals are too pretty to break! You should see how big of a single crystal you can grow.

[@Billionaire2.0492]

can we use sodium nitrate instead of pottasium

[@jadenephrite]

Regarding 2:03, adding potassium nitrate into water produces an endothermic reaction which is the cooling effect. On the other hand, if it had been an exothermic reaction, this would have produced a heating effect.

[@philipbender956]

Yes I misspoke during the narration.

[@rene.martinez5714]

Thanks bro fr

[@moci42]

I have no desire to make nitric acid, but the chemistry of it is most interesting.

[@mdsajidnoman9716]

Nice

[@StevenSchoolAlchemy]

Great job!

[@peterlamont647]

Hey, and when you're done making nitric acid, you can make some corned beef with all that salt peter...couple tea spoons to a brisket, brine for a couple weeks in the fridge.

[@peterlamont647]

Although the stuff I have is pink...potassium nitrate is white. So I wonder if it is just a mixture of salts I have...

[@philipbender956]

@@peterlamont647 the pink stuff maybe an anti-caking agent.

[@peterlamont647]

@@philipbender956 I'm thinking they put pink dye in it so that you don't mistake it for regular salt. In many recipes & cook books it is referred to even as pink salt. It also tells you when the meat is corned(its the only way I can tell) when it turns pink. This is also what gives salami, pepperoni, corned beef, bacon, ham, pastrami etc. their respective pinkish color. I had always assumed that salt peter was pink as a chemical as a result...I definitely learned a lot from this video!

[@hmax1591]

O.K. thank you for the chemistry class. very interesting. I doubt it I would be refining gold or silver from computer parts, I have seen your other video and seems quite a lot of work for such a small amount of gold. . But it is interesting. I mix potassium nitrate and sugar to make great smoke bombs.

[@chancebutler6472]

tyvm

[@philipbender956]

Enjoy 😁😊

[@thebobsquadmob]

I have the honor of being #1000. I am not a chemist by any stretch but I would say this is a great instructional video. I was actually looking for instructions on turning the non-metallic lead in a lead-acid battery back to metal. Robert Murray Smith did one a few years ago but I think he removed it because too many people were on him about the safety of handling lead. I see quite a few guys doing battery revival videos and the not metallic lead seems to go to an undisclosed location.

[@fivel976]

i have found that if you filter of your water from the first batch and use it in a second batch you get a much better yeald first batch i got 2 pounds from the 3 pounds i stared with the second batch using the water from the first batch i got 3 lbs 2 oz of crystls

[@johnrpickett1794]

Hello - The video worked great. Was able to follow, adjust for my size equipment and the results were spot on ... The 1st time. I do have a follow on question for my 2nd and 3rd batch I did months later. Upon completion I did not have any Potassium Sulfate left over in the boiling flask. Why and what was the catalyst for this occurring? Hope you see this new question on an older comment. I enjoy the videos!

[@philipbender956]

It sounds like you used an excess of sulfuric acid.

[@johnrpickett1794]

Thanks. Will pay more attention.

[@johnrpickett1794]

Saw my error. Potassium nitrate measured in grams. Sulfuric acid measured in ml. Next batch went perfect. Thanks again!

[@zmarekk]

Great job :) like is ok.

[@philipbender956]

Thanks, I am happy you enjoyed the video🤗😀

[@user-je2yg3om8n]

Thank you for this description. Please how can I use sulphuric acid deluted 32% ?

[@philipbender956]

I am not sure if you can. 🤔 I am happy you enjoyed the video.

[@imsidetracted]

i used to use stump remover for my candy rocket engines then i discovered amazon when I wanted to add powdered aluminum darned if they dont sell it, and potassium nitrate! cheaper also!

[@philipbender956]

Yes, I purchase all my potassium nitrate from amazon.

[@billywalker8631]

Can you link to a place to get all the glassware you use in your distillation setup? Or a list of pieces? Thanks

[@GainsGoblin]

Probably better that you learn about it on your own. Playing with acids without any knowledge about basic chemistry isn't very safe especially if you plan to play around with nitrogen compounds. I can ship you a distillation lab I did recently. The principle is the same as what is described here and the apparatus used to distill is similar.

[@longimanusisurus132]

Simply beautifull. Could you tell me how much quantity you get of nítrico acid using that 800 of PN, and 600 of Sulfúric ac?

[@philipbender956]

About 500 mil

[@rkb6783]

WOW... THAT WAS EXPENSIVE !

[@michschep7601]

Filter the hot solution before cooling to remove anti-caking agents...... and its endothermic reaction when mixing nitrate and water.....

[@abdullraufkhn4052]

Good very nice vedio.

[@philipbender956]

Thanks, I am happy you enjoyed the video 🤗 😀

[@abdullraufkhn4052]

@@philipbender956 Thank u very much Sir.

[@gauravsrivastava9477]

phillip I love your work , its amazing to watch you doing all this , I also want to do this , can you name sources where I can buy these chemicals , equipments and the scraps for the experiment . Love from India. ❤️❤️

[@philipbender956]

Thanks, I am happy you enjoyed the video 🤗 😀 Try searching "gold fingers" on eBay. You can also find all the equipment and chemicals there.

[@philipbender956]

Amazon is also good they have the best price on potassium nitrate. Pyrotechnic grade.😀

[@somsackvongsa7077]

@@philipbender956 edward scizor hand.

[@homealchemy]

What is the name brand for the sulfuric acid drain opener? It’s looks so clear!

[@philipbender956]

Rooto Professional drain cleaner. I get it from my local hardware store. It's not always clear sometimes they just forget to put the dye and inhibitor in it. The reaction will still work fine if you have coloured sulfuric acid drain cleaner. Once you start the reaction the heat and acid will destroy any impurities in the mix. The solution will go clear very quickly. I hope that was helpful. I am happy you enjoyed the video

[@valtercisco]

Is it possible to use the bottom of a stainless steel distiller to heat the mixture and the rest of the process in glass tubes?

[@philipbender956]

Yes just make sure it's high-quality non-magnetic stainless steel.

[@keithmorrison6176]

to make the crystals do you put in the freezer or just in the regular part of the fridge.

[@philipbender956]

To make crystals you need to chill the solution but not freeze it. I would advise you place in the refrigerator not the freezer.

[@KD0CAC]

A few couple questions , I heard that high purity nitric acid will decompose - how to stop that ? Use of brown glass for storage ? Thanks

[@philipbender956]

Yes, use Brown glass for long-term storage. Then keep in a cool dark place away from UV light.

[@ivsongold322]

👍👍

[@philipbender956]

😆🤗

[@robertkorfanta9087]

Hi. Thanks for all the videos. Can you use a nitric acid substitute instead of the stump out

[@ahmedmahdi1849]

You can get potssium nitrate from a fertilizer bag containing the salt

[@jhyland87]

Question - On one of the videos on NileBlue (NileRed's second channel about random lab stuff and cleanups), he states that RFNA should be stored in a bottle only at like 50% of the volume, since the nitric acid fumes can build up the pressure and cause it to fail. Additionally, he said that he vents his bottle often, sometimes daily, to ensure pressure isn't built up. Do you do the same thing for RFNA storage?

[@philipbender956]

I don't know about any of that stuff 😯 But just for good measure I did just check a glass bottle of concentrated nitric acid. That I made myself two years ago......... There was no pressure in the bottle. Everything looks good 🤔 Maybe Nile blue was speaking of some sort of peroxide compound. I know that can get explosive as it degrades with age.

[@jhyland87]

@@philipbender956 nope, it was RFNA. go to 1:30 in this video: kzbin.info/www/bejne/iYPNaHqmgZiFm9E

[@front2760]

Hi nice vid.Brings me back to when i was taking chemistry in school.I wondered though if it might not easier to pick up potassium nitrate from a butcher supply that sells spices and such.Might be a little easier i think.

[@philipbender956]

I agree it would be easier. I have searched around. Extracting potassium nitrate from Spectracide stump remover is cheaper then just buying potassium nitrate. From 6 pounds of Spectracide stump remover you will get 5 pounds of potassium nitrate at a cost of $44.00. Every other source I have found is more expensive and has a shipping cost. With this method it cost about $55.00 per liter of %95+ nitric acid.

[@front2760]

Ya i forgot about shipping.I have around 1200 gm of sterling that i melted down so i now i need some nitric acid for the next step.Hence me watching these videos.

[@philipbender956]

@@front2760 it takes about 800 mil of the nitric acid that I make to dissolve 1000 grams of sterling silver. I will be publishing a video demonstrating such in about a week.

[@mahdiarghafarian4031]

Did you work with RDX and PETN or plastic explosives ?

[@philipbender956]

I have not worked with any explosives. I am more of a hobby chemist.

[@kl.et.earth.com..1896]

I would have liked to create some nitric acid to purify my collected bit of gold that I have so far electrolytically refined with sulfuric acid, This video & other methods I have examined seem unpleasant & hazardous by the very nature of the subject of such strong chemistry, Though I don't really like the idea of evaporating a small amount of lead I think cupellation is by far a more acceptable approach to my fussiness really. Very interesting video thanks.

[@MrKenny9151]

This is a photo of a .9999 silver coin with something called a MilkSpot. Milk spots are believed to be caused by the cleaning process the Mint. The cleaning process involves some kind of detergent (not sure the type) but when some of this detergent is unintentionally left on and then baked in during the annealing process you get Milk spots. So that's why looking for the strongest acid or base that silver isn't affected by so as not to damage the coin itself and remove the milk spots.

[@philipbender956]

Try using electrolysis to clean your silver coin. All tarnish will be removed instantly with electricity.

[@BullProspecting]

Or if you could make a video on how to make a rudimentary Distillery that would be awesome. I don't know if that can be done but if so that would be super helpful. I'm trying to do gold recovery from computers and I want to get set up professionally so everything is safe. Thank you so much for making this video because it is awesome! You are the man! And I did not know that about the latex gloves thank you for sharing!

[@philipbender956]

If you have very limited lab experience. You may just want to purchase your nitric acid. Making nitric acid is very dangerous especially if you have limited experience with distilling. I wouldn't make your own still if you're going to use it for acids. You can get a decent glass distilling kit for $35 on eBay. A fun and easy way to learn how to distill is to make your own ethanol. (Drinking alcohol) lt's a good way to learn and it's not nearly as dangerous as hot acids.

[@bigacorns69]

​@@philipbender956 in this case it may be important to distinguish the difference in ethanol, bought at a gas station and the ethanol in an alcoholic beverage.

[@philipbender956]

@@bigacorns69 yes, the ethanol at the gas station. Is mixed with gasoline. I would call that denatured. The ethanol in beverages is safe to drink.

[@vibeLia]

Can we used calcium nitrate directly substitution of potassium nitrate?

[@philipbender956]

Yes, any nitrate salt will work.

[@b.wakegijig2625]

@PhilipBender say I just made Potassium Nitrate from Instant Cold Packs which was my Calcium Ammonium Nitrate then separated to only have Ammonium Nitrate which I then added Potassium from a No sodium Salt substitute. Will this work for this Nitric acid synthesis? If not what would you recommend to purify homemade ingredients? Such as the ones that later yield such a fine chemical like Nitric Acid.

[@philipbender956]

Yes, go on Amazon and purchase pure potassium nitrate crystals. You can get them laboratory and pyrotechnic grade. Much cheaper than making yourself.

[@chanheosican6636]

I plan to do this with calcium nitrate and 31% hydrochloric acid in reflux at 60 deg C.

[@goldenscrab]

can i use NPK fertilizer instead of the potassium nitrates? its a fertilizer that contains nitrogen phosphorus and potassium, but about 60% if that is potassium

[@philipbender956]

You would need to extract the potassium nitrate 1st

[@goldenscrab]

@@philipbender956 using the same method you did at the begining of your video or there is another method for that?

[@jayhanson2224]

I appreciate the video, but I some questions. What is typically the time it takes you to do the distillation process? How do you figure out the purity of your nitric acid? Could you maintain a 290 - 300 degree temp and extend your distillation time and produce more nrtic?

[@GoldenAura32]

You could measure the density. Also once the boiling point passes whatever temperature you target you will no longer distill anything.

[@imranammo]

Hi Excellent video Is this caustic soda

[@kgchrome]

two quick questions... 1. are you removing the fore run and lower boiling temp distillate that comes over before you hit 135C, or are you keeping everything that comes over above a certain temperature? if not, wouldn't that result in a lower percentage final product? 2. putting the thermocouple in the glass thermometer well only gives you the temperature of the air in the well, not the vapour temperature. an alternative would be a thermometer adapter with a PTFE seal, and a PTFE coated thermocouple probe, or a regular glass thermometer. thanks for the video.

[@philipbender956]

I collected the entire run into one bottle. I started with fairly dry high-purity ingredients. The resulting nitric acid is over 95%. It will instantly ignite lab gloves. You will only make water down acid if you add water at the beginning of the reaction 😉

[@philipbender956]

I wish I had a nicer thermal couple 🤓 I'm just grateful that I'm not stuck using the alcohol thermometer that came with the set 😳

[@williamrussellmorley]

it was claimed saltpeter was added to our food in navy bootcamp 45 years ago ...

[@antigen4]

William Russell yes it was supposed to curb masturbation

[@michaelsinaloense6449]

Nothing short of amputation will stop an 18 yr old from doing the deed. Lol.

[@LakshmiLakshmi-qy9uo]

Super

[@philipbender956]

Thanks, I am happy you enjoyed the video. 🤗😀

[@loneparvaiz3635]

Nice, Sir please tell me which chemical is used for smelting silver ore it will be your most kindness

[@JimNichols]

you *smelt* silver ore with heat not chemistry.

[@vibeLia]

How to make ammonium phosphate into ammonium nitrate?

[@BobSmith-es5wc]

thanks morgan freeman

[@thepatriotrocker8001]

Is there a way to refine the stump out to get pure sodium metabisulfite to use as a precipitant? Or would it just be easier and cheaper to buy the sodium metabisulfite

[@philipbender956]

It is cheaper and easier just to purchase sodium nitrate from Amazon. I was demonstrating that it was easily extracted from the spectrum brand of stump remover. Only the spectrum brand contains sodium nitrate. Do not use stump remover containing sodium metabisulfite.

[@thepatriotrocker8001]

@@philipbender956 okay, thanks.

[@mfrost1743]

Hello man. Great video! I stumbled across this & learned alot! I'm wanting to try to make my own nitric acid as I currently have a bunch( fills up an entire 12x15 room) of computer & e scrap that I'm wanting to reclaim and refine PM's. I have some questions: 1) I'm wanting to use this single distribution simple distillation using 304 SS as the distillation tube( or as we call "the worm" instead of glass.( because I have an abundance of 304) glass filter flask as my pot, & a brown glass( lab grade that I haven't ordered yet) jar for the collection pot. Do you know of any problems this will cause? 2) After I reach 315 & stop distilling, can the sulfuric & nitrate in the still be reused or reclaimed to make future nitric acid? 3) couldn't I use the nitric to reclaim the pm from the scrap instead of AP? Seems like it would be much faster & probably produce more yield as efficiency would increase? This is a start, but can I please email you for more info?

[@philipbender956]

Thank you I am happy you enjoyed the video.🤗 Yes you can use a stainless steel still. Just be sure to ensure the purity of the steel by using a magnet as 304 SS should be non magnetic. Once you have reached 315ﾟ keep driving it till It stops producing. The remaining product will be mostly Sodium bi sulphite. Not worth your time or energy trying to scavenge any remaining acid. As far as using nitric acid instead of AP. It takes about one Litre of concentrated Nitric acid. Per pound of scrap. To separate gold foils.

[@RandyManu-jk1yn]

M>Frost hallo what is the abbrevation MP and AP ?

[@cadillac8597]

@@RandyManu-jk1yn PM=Precious Metals AP= Acid/Peroxide (a process to refine precious metals)

[@RandyManu-jk1yn]

@@cadillac8597 okei!!! Thanks 💡

[@chemistryscuriosities]

It's an endothermic not exothermic reaction

[@claytonmccormick622]

once there was a harty scolor who is no more for what he thought was h2o was h2s04:=) i have noticed titanium camp cups and pots how hard would it be to convert one as a distillation rig as it would last a lot longer then borosilicate glassware as it would not crack from uneven heating or brake when dropped just wondering?

[@philipbender956]

Sounds like a good idea.

[@MmeHyraelle]

What else can you use? Havent found any stump remover in canada.

[@philipbender956]

Sodium metabi sulfide

[@JoSeeFuss]

Using such a higher concentration of nitric to dissolve silver, would you recommend making two containers of 95% nitric? In a proper bottle, how long can it be stored and in what temperatures? I live in the southern nevada desert

[@philipbender956]

I have bottles of nitric that are 3 years old. It may be a good idea to keep it out of direct sunlight.

[@joeestes8114]

This is the expensive way! I can buy potassium nitrate for 3 dollars a pound on line and that stuff is over 8. Still awesome video!

[@Ta2dwitetrash]

Far supply store near me has 55 lb bags for 55 dollars. I was suprised i found it so cheap.

[@YTcontentconnoisseur]

Thanks for the great info! If you do completely dry and vac seal your KNO3, should you add some distilled water to the reaction flask?

[@philipbender956]

No. The less amount of water the better.

[@grahampike488]

Can you put the nitrate mixture in a plastic container in the fridge with a lid on it?

[@philipbender956]

Yes, happy you enjoyed the video 🤗 😀

[@johnh8615]

Is the orange colour a contaminant?

[@philipbender956]

Yes technically the orange color is a contaminant. The orange color is mostly nitrogen dioxide with a small amount of nitrogen trioxide. Both are caused by the decomposition of nitric acid. You can remove the orange color by bubbling dry air through the nitric acid. The orange color does not interfere with any metal refining reactions.

[@GodJoker]

Did you add chlorine?

[@philipbender956]

No the only two ingredients use were potassium nitrate and sulfuric acid. The only thing that reminds me of chlorine is the smell of nitric acid. It has a slight chlorine odor.

[@Butterflytaxidfw]

Do you have to a glass beaker to do this? Can you use a metal pan?

[@philipbender956]

You can purify your potassium nitrate in any container. I used glass so you could see what was going on for the video. I normally use a stainless steel bowl to purify my potassium nitrate. As far as making and distilling nitric acid. I would definitely recommend using glass. Hot concentrated nitric and sulfuric acid are extremely corrosive.

[@Butterflytaxidfw]

@@philipbender956 I do not have a distiller I certainly do not have that expensive glassware. I looked to see if I could buy nitric acid but my friend told me that it is watched because of people making bombs. I want to use it for gold recovery

[@philipbender956]

@@Butterflytaxidfw you can get a glass distillation apparatus off of eBay for $30. Just look up distilling kit. Also you can purchase 70% nitric acid off of eBay. the only reason the government would think you are making bombs with nitric acid is if you also purchase other bomb-making supplies and you start watching a bunch of videos on how to build a bomb.

[@Butterflytaxidfw]

@@philipbender956 Cool I will check it out, I just do not want the feds knocking on my door. Thanks

[@philipbender956]

@@Butterflytaxidfw I completely understand I definitely wouldn't want to break the law either. I don't think the feds would look into you unless you were purchasing gallons of nitric acid. Then they may be more curious as to how you're disposing of it versus whether or not you're making bombs.

[@hugostiglitz4452]

7:20 in a sense. its used to not let it degrade the joint grease causing a leak. thats why sulfuric acid is used bc it wont degrade it.

[@philipbender956]

Yes. You can also just let the system seal itself. Take your pic concentrated sulfuric acid or concentrated nitric acid. They're both pretty nasty when you touch them as you take apart the rig to clean it.

[@hugostiglitz4452]

@@philipbender956 really???? ive never heard of doing that. ive always been told to grease with sulfuric with highly corrosive/basic distillations.

[@rookthecook8675]

how much potassium nitrate was it?can i use fertillizer?

[@philipbender956]

I used 800 grams of potassium nitrate in this batch. A good rule to follow is to use equal amounts of potassium nitrate and sulfuric acid. If anything you should use a excess of sulfuric acid. You can use fertilizer that contains potassium nitrate but I would recommend extracting the potassium nitrate. If you just add sulfuric acid to fertilizer that contains potassium nitrate. The sulfuric acid and the nitric acid that you produce will react with the other chemicals present in the fertilizer. That will diminish your yield.

[@emilaticha722]

Hello, How many grams of KNO3 and Na2S2O5 should be added to water ?

[@philipbender956]

Add enough water so that you completely dissolve the kno3. But you want the solution to be saturated so use boiling water. As far as the na2s2o5 is concerned. That is useless for making nitric acid. Save it for precipitating your gold out of aqua regia.

[@Rob337_aka_CancelProof]

0:50 but this is the one you want to use for dropping that gold once you get it into solution

[@tipxking9944]

Would it have been easier to dry the potassium nitrate chrystals in a oven with a slight heat for quicker drying process?

[@philipbender956]

Yes but it is a waste of energy.

[@tipxking9944]

@@philipbender956 that makes sense. Why is the nitric acid dense yellow at a higher concentration instead of clear? Do it contain sulphur contaminates?

[@DFPercush]

@@tipxking9944 that's the brown NO2 gas, the reason it's called red fuming nitric acid. Very toxic. Above about 70% concentration it starts doing that, because some of the nitric acid decomposes into NO2. You can also dissolve NO2 back into water to produce weaker nitric acid.

[@imsidetracted]

When you make the potassium nitrate crystals do the excess additives pour off down the drain?

[@philipbender956]

Yes. What is left over is mostly the cutting agent. Potassium nitrate is extremely hydroscopic. It will pull moisture out of the air. I think they add something to prevent this from happening. And a small amount of dirt. Most likely from the facility where they store the potassium nitrate and mix the cutting agent. It should be safe to pour down the drain as this product is designed to be used outside in the environment. It is stump remover.

[@imsidetracted]

@@philipbender956 thanks for quick answer. I just crystalized some potassium nitrate from China and it was heavier going in than it was coming out. I think the stump remove is more pure. More expensive tho so crystallizing it is great for me.

[@philipbender956]

@@imsidetracted you can purchase pyrotechnic grade potassium nitrate off of Amazon. And it's cheaper than stump remover 😎

[@imsidetracted]

@@philipbender956 I did 10lbs. Weighed it then crystalized it and it lost weight.

[@TT-nh7rx]

What would be the best tubing to use to connect to a vacuum pump for making nitric acid?

[@philipbender956]

Vinyl seems to give the best resistance to nitric acid. I purchased mine from a store that had aquarium supplies.

[@TT-nh7rx]

@@philipbender956 cool, thanks for that. Finally... what kind of air vacuum pump do you use for this?

[@philipbender956]

@@TT-nh7rx I don't know, you would have to find one that was chemical resistant. You don't need to run this distillation under a vacuum. I just attached a vinyl hose to my vacuum take off adapter and put it directly into my fume hood.

[@TT-nh7rx]

@@philipbender956 Thanks for your help dude 👍🏻

[@JimNichols]

It doesn't "create a Peltier effect" as this effect is created by thermoelectric devices it creates an endothermic process as it reacts with copper in air. BUT the rest of the video was very good science!

[@MadScientist267]

That's ok "adding KNO3 to water will cause an exothermic reaction and the solution will start to cool down"...

[@giansieger8687]

Mad Scientific my thought exactly. Also he said hydroscopic… And why imperial temperature? I was thinking the whole time why he‘d heat to the BP of sulfuric acid. He coulda mentioned that at some point.

[@mahdiarghafarian4031]

Did you titrate it which you said its 95% ? or by density ? if from density you should first remove no2 or freeze that to clear the acid

[@philipbender956]

I deduced the purity from density it weighed out correctly. Also if you don't add any water and you dry your ingredients. You will always produce a very high percentage. Another trick is to add a little extra sulfuric acid to gobble up any water present.

[@mahdiarghafarian4031]

Yes Your acid is RFNA due the dissolved excess NO2 which forms as N2O4 in that but it has less than 2 percent water

[@Salty4eva]

is this process significantly cheaper than buying Nitric Acid? Or are there other reasons for using this process?

[@philipbender956]

Yes it is cheaper to make the acid. Also the acid I produce is much stronger than the store-bought. The best you can purchase online is 70% the acid I make is greater than 95%.

[@firasabbis8056]

You can make HNO3. From. NaNo3+Hcl ----------> HNO3+NaCl

[@metamorphicmuttmetall.l.c.6848]

I believe the reaction at 2:10 is endothermic not exothermic.

[@philipbender956]

Yes you are correct I was thinking endothermic but I said exothermic.