I use to use this compound when I was a kid in my pyro compositions. My father use to bring home chemicals for me from work, and this was the last one he brought home. As you know it has a low melting point, and I accidently dropped it all over the carpet. He was pissed and that was the end of my fire work days lol. I still cant believe he brought these chemicals home for a 12 year old as they are so poisonous. I loved the bright white the compositions would burn with this mixed in. Great video, thanks for the synthesis for this, I always wondered how to do it.

I made chromium trioxide by straight away adding concentrated Sulphuric acid to solid Potassium Dichromate and even that method worked as well, also less Sulphuric acid will be used in that method (without water)

its the only video in entire youtube about cr03 thank you.

"Of course goggles are a must here"... Well said!

Beautiful! Loved it!

Come home man, we need you

"Tang... it's not just for breakfast anymore"

I miss you, Doug!! I pray you are just locked up and not dead

Great video! i will be donating also thanks!

I use this compound every morning with milk juice and toaste!

Thank you very much wait more

I found you through Thoisoi!

the only way i found out about this is because there is an abandoned factory with vats of these types of compounds in them :/

What program are you taking for video editing??

can u please upload a video of cumene process(hock process) for phenol synthesis?

Dear Doug, I'm trying to figure out if low voltage electro-etching of chromium-bearing steels produces Cr(VI) in any form (such as CrO3) but I have no idea how to figure this out. There seems to be a lot of conflicting info out there. My method of electrolysis will be using aqueous iron (II) sulfate as the electrolyte, a hunk of low carbon steel as the cathode and stainless steel (to be etched) as the anode. Your insight here is SUPER appreciated... I'd love to know as much about this as I can above any beyond the Cr(VI) concerns. Best, George

would hydrogen peroxide work in place of sulfuric acid as an oxidiser? and would this increase the yield because sodium hydroxide creates a basic solution this would then favor the CrO3 equilibrium to convert all CrO3 and preciptate it out of solution. I want to make this without H2SO4 please reply if you think this could work

Hey Doug can I use ammonium dichromate instead of sodium dichromate

What's the chart called that he used? I'm curios about what a sulfide one would look like

nitric does not corrode stainless steel. actusply it is sold in stainless carboys and kegs. it is also used to passify stainless. funny enough, one method of passifying stainless is nitric 10% with potassium dichromate and water. this is done particularly after welding stainless make more videos!

By the way, in a "all reagents are available" kind of scenario, could you fully dry the CrO3 using thionyl chloride?

9:47 In order to get rid of the H2SO4, could the HNO3 in the washing step be replaced by Glacial Acetic Acid?

dude did that oxidation at 16:41 actually crack that vessel?! ok I see it didnt. whew good vid

nice man! react Cr2O3 to display its reactivity for me? I have a bunch and I'm having problems getting it to trivalent chloride salt

Hi,how to make potasium cyanide to ammonia and potassium hydroxide?

With the nitric acid washing step, is there not a concern that mixing the conc. H2SO4 and HNO3 together would make an in-situ nitrating mixture and nitrate the filter material to create chromium-heavy nitrocellulose waste?

Can you do a video on making Shvo Catalyst?

Why use the microwave instead of the hot plate it's already on?

Can you try and make unstable Chromium pentoxide with diethyl ether and potassium dichromate

you know, you could have saved HEAPS of sulfuric acid by adding only enough water to made a paste, or, even at only 93 percent , you could have just added the acid with no water at all, and then you would have only used 100 mLs or so...

You started with 100 g of Na2Cr2O7-2H2O which was 0.335 moles. A 100% yield of CrO3 would be 67 grams,so your product must have been still WET or MIS-weighed-whatever! Otherwise, I liked your technique and this video!

I assume chromium trioxide added to neutral water makes straight chromic acid free of alkali metals available to react with other bases to make other chromates correct?

Can i use potassium dichromate if that's all i have?

Where to buy chemical reagents?

Percentage yield?

good

why cant you just dissolve the sodium dichromate in a less concentrated sulfuric acid that is also chilled instead of dissolving it in water first

Orange cancer juice and h2so4: red cancer juice. Add more h2so4: red cancer explosive.

Would it not be cheaper to replace the expensive sulphoric acid with something cheeper like hydrochloric acid?

And that kiddies is how real men start fires

The water addition is not needed just add sulfuric acid.

anyone else see dougs face and the camera in the reflection of the round bottom flask at 12:53?

Where to buy Chromium trioxide?

I found red fuming nitric or piranha solution best for cleaning glassware. I was never that impressed with chromic acid cleaning solution.

Can you make thermite with it?

So much nasty stuff at once. Great video.scary

Hey dude, could we just use 68% HNO3 instead of the H2SO4

Still going Doug?

Why is the vacuum pump so loud?

its soo orange.....i want to drink it.....can i drink it?

Couldnt you just burn the metal itself in air?

Hi , you are good in chemistry. Can you make a video where you show how to produce HF ?

hello, i have 2 parts of pure chrome metal 99,8% (Cr2O3+2Al -> 2Cr+Al2O3) can i extract cro3 from this metal?

I guess this method makes sodium trichromate Na2Cr3O10

SPEEK SLOWLY

that stuff is very toxic, ain't it?

2:50 chromate is actually 2-, not just -

how can i purify red h2so4 from drain cleaner?

hi please there is no voice

Nice video, try speaking a bit slower, please.

I'd leave it stirring whilst cooling. don't understand why people do what you do, it's silly.

parlez doucement, je n'arrive pas à suivre