Synthesis with H2S04 and CaCO3/CaO?

[ponellibro]

OK so now i have this last problem. my H2SO4 has only 15%...
So what can I do?
Can I boil the water away if i can't freeze it away?
Can I do smth else to get a higher concentration?
Or can i substitute the sulfuric acid with other acids? Citric acid f.e. is avaliable in high concentrations fluid or anhydrous...
Ordering higher concentrated H2SO4 is the last option!
Please help, I'm stuck

 

[broken_sharded]

Go to the hardware store and by drain cleaner like rooto liquid drain cleaner, it is 93% sulfuric acid.

 

[HerrHaber]

just boil the water off under no circustance use the dilute 15% or loose everything into an aqueous solution that may beoe too acidic and hydrolyze your product, just listen to what we all say it's plain stupid to use dilute

 

[Mohammed_Lee]

I have some pharmagrade concentrated HCl (37%) left and I'm interessted in turning some base into Amph-HCL. Is it made like Sulfate (adding HCl dripwise) or by using gaseous HCl?

thx in advane

 

[UWe9o12jkied91d]

it can be made both ways but it is hard to isolate and store, as opposed to methamphetamine it is more hygroscopic I heard