Author Topic: Denatured Alcohol  (Read 3952 times)

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UTFSE

  • Guest
mouthwash as a starting point
« Reply #40 on: July 11, 2002, 12:43:00 PM »
there's a relatively simple source for ethanol be it diluted slightly. Mouth wash (aka Lister-something or other) contains about 24% for about $1 a litre discount super cheapo.

The alcohol distills out but still smells like the mouthwash which can (probably) be dealt with with activated charcoal/filtration.

Then on to drying like was mentioned afore  (CaO).

this is closest OTC but doesn't beat Everclear, etc.

OTEECEE & meeeee!!!!

UTFSE

  • Guest
getting gobs of CaO
« Reply #41 on: July 11, 2002, 12:46:00 PM »
rumor has it heating lawn lime (CaOH) drives off CO2 leaving CaO. anything troof to it?

OTEECEE & meeeee!!!!

former_chemist

  • Guest
Yes hydrated lime + heat = CaO
« Reply #42 on: July 11, 2002, 09:44:00 PM »
Now the catch.  You have to heat it beyond red heat (825-1000C).  This is easy to do if you have access to a pottery kiln.

madprosr

  • Guest
Re: CaO
« Reply #43 on: September 05, 2002, 04:05:00 PM »
what about drying your 95% EtOH with MgSO4?
is there some reason this will no work?

lugh

  • Guest
Solubility
« Reply #44 on: September 05, 2002, 05:41:00 PM »

what about drying your 95% EtOH with MgSO4?
is there some reason this will no work?


    

Magnesium sulfate is soluble in ethanol, thus it's not a good choice for drying it. Calcium oxide is the traditional method  :)  Molecular sieve 3A would work  :)  Azeotropic distillation using benzene is the recommended route for drying, if drinking it isn't the goal, a little known method of drying ethanol is to boil out the azeotrope of dichloromethane and water; it's boiling point is 38.1° C, and is composed of 1.8% water. See Jour Soc Chem Ind 61 and Chem Ind 20 120 (1942) for more details  ;D  Using magnesium as described in Vogel's is another good method  :)  
 
 


VideoEditor

  • Guest
Sodium Carbonate
« Reply #45 on: September 05, 2002, 09:50:00 PM »
In SWIVE's dreams, he uses dried sodium carbonate where he used to use dried epsoms. Does anyone know if it is soluble in ethanol? SWIVE told me he's had good results drying ISO, methanol, acetone and VM&P naptha with it.

Real Men Don't Preview Their Edits

bee186

  • Guest
Lugh hi, would CaO remove the H2O only or would ...
« Reply #46 on: September 05, 2002, 10:03:00 PM »
Lugh hi, would CaO remove the H2O only or would it also remove the methyl alcohol denaturant?

thanks advanced

chemdork

  • Guest
hmm
« Reply #47 on: September 08, 2002, 09:08:00 PM »
is there a decent way to turn the MeOh into a solid
compound by the addition of something else?  Then simple
distill your goodies... any ideas?

WW4000

  • Guest
about water in the NaBH3
« Reply #48 on: September 10, 2002, 02:06:00 PM »

WW4000

  • Guest
oh yes - too rough on the di-oxy ring, i remember
« Reply #49 on: September 10, 2002, 02:09:00 PM »