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tahallium
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sad.gif posted on 28-6-2020 at 13:36
Calcium oxide purity?


Hello again sorry for asking but I bought 10kg calcium oxide with some black stuff and 150g ammonium nitrate!! Finally
I want to get ammonium hydroxide using calcium oxide and calcium nitrate and add concentrated sulfuric acid to make nitric acid without distillation and calcium sulfate
But I'll use calcium oxide to destroy METHYL IODIDE and I'm freaking out cuz I'm not sure if there's anything like Mercury, arsenic, lead, thallium or any heavy metals and I really don't want to make any dimethyl Mercury....
I bought calcium oxide from the hardware store please help

[Edited on 28-6-2020 by tahallium]
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Bedlasky
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[*] posted on 28-6-2020 at 14:27


Why do you always suppose that in everything is mercury, arsenic, lead and thallium? These elements in calcium oxide? Nonsense. For Christ sake, use common sense and stop freaking out! Btw. dimethylmercury doesn't form only from mercury or mercury salts and methyl iodide.

How do you get ammonia from calcium oxide and calcium nitrate? This doesn't work.

Don't mix calcium oxide with concentrated sulfuric acid, this is really exothermic reaction and it's extremely dangerous!

When you mix calcium nitrate and concentrated sulfuric acid, you obtain white fuming nitric acid, which isn't chemicals for begginers, beleave me. It's extremely corrosive, worse than concentrated sulfuric acid for your skin. It burns like a hell.




If you are interested in aqueous inorganic chemistry look at https://colourchem.wordpress.com/main-page/

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Ubya
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[*] posted on 28-6-2020 at 14:48


i think that he wants to add sulphuric acid to ammonium nitrate to make nitric acid and ammonium sulphate, and then add calcium oxide or hydroxide to ammonium sulphate to make ammonia




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tahallium
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[*] posted on 29-6-2020 at 02:45


Oh I'm sorry I meant adding calcium oxide TO ammonium nitrate and bubbling ammonia through water to make ammonium hydroxide I don't have flask or a condenser so I need calcium nitrate + sulfuric acid method
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tahallium
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[*] posted on 2-7-2020 at 10:25


So can I be sure calcium oxide has no heavy metals to add it to methyl iodide/ethyl iodide without making tetraethyl lead, dimethyl Mercury, triethyl arsine!? Cuz these compounds are verrryyyyyyyyyyyy toxic, Lethal of inhaled LETHAL IF TOUCHED
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[*] posted on 2-7-2020 at 14:10


@Bedlasky already answered your question on methyl mercury.
Presuming you are not trying make something you intent to consume you will be perfectly safe following normal lab practices. Wear gloves, full length clothes, eye protection AND don't use your kitchen utensils:D.
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