Does burning methanol create carbon monoxide?

ZmOz

Captain
Joined
Aug 13, 2003
Messages
3,949
This time of year it gets kind of cold in my garage...I have a small electric heater out there, but it takes forever to heat up. Lately I've been burning about 6 ounces of methanol in an old paint can with holes drilled in it. That little amount brings the temp up about 6-8 degrees.<br /><br />I know methanol burns very cleanly, with no smoke, but can anyone tell me if it creates carbon monoxide? I know with propane, for example, it may or may not produce carbon monoxide depending on what you burn it in...
 

KRS

Banned
Joined
May 15, 2004
Messages
2,383
Re: Does burning methanol create carbon monoxide?

Methanol has the formula CH3OH. When it burns, it produces large amounts of H2O (water) and CO2 (carbon dioxide).<br /><br />I don't know if it uses Oxygen (just as dangerous as a delpleting oxygen atmosphere kills quickly).
 

KRS

Banned
Joined
May 15, 2004
Messages
2,383
Re: Does burning methanol create carbon monoxide?

More info from the EPA...<br /><br />"Description:<br /><br />Methanol (C.A.S. 67-56-1), also known as methyl alcohol, is a clear, colorless liquid with a pungent odor at ambient temperatures. First discovered in the late 1600s, methanol has been called wood alcohol because it was obtained commercially from the destructive distillation of wood for more than a century. True wood alcohol contained more contaminants, including acetone and acetic acid, than the chemical-grade methanol available today.<br /><br />For many years the largest use for methanol (about 50 percent of all produced) was as a feedstock in the production of formaldehyde. It is now also used in the production of acetic acid; methyl tert-butyl ether (MTBE) and oxinol, which are used to improve gasoline octane; and other chemical intermediates. Methanol is also used as a solvent and in the production of single-cell protein, which is used as animal feed additives replacing such supplements as powdered milk, soybean meal, and fish meal.<br /><br />Chemical properties:<br /><br />Methanol is a fire hazard, exploding or flaming when exposed to heat, flame, or oxidizers. It produces poisonous gases, including formaldehyde, in fire. It is incompatible with beryllium dihydride, chloroform, cyanuric chloride, metals, oxidants, and potassium tert-butoxide. It has a slight alcoholic odor when pure; crude material may have a repulsive pungent odor. Methanol is highly soluble in water.<br /><br />Synonyms for methanol are methyl alcohol, carbinol, wood alcohol, wood spirits, columbian spirits, colonial spirit, methyl hydroxide, monohydroxymethane, pyroxylic spirit, and wood naphtha."
 

LubeDude

Admiral
Joined
Oct 8, 2003
Messages
6,945
Re: Does burning methanol create carbon monoxide?

Wow, I hope we hear back from him. :eek: :eek: :eek:
 

Elmer Fudge

Lieutenant Commander
Joined
Aug 25, 2003
Messages
1,881
Re: Does burning methanol create carbon monoxide?

:eek: :eek: ZmOz, are you still out there?...in there?....somewhere? :( :confused:
 

Paul Moir

Admiral
Joined
Nov 5, 2002
Messages
6,847
Re: Does burning methanol create carbon monoxide?

Burning 6 oz of methanol produces less CO2 than burning 2 charcoal briqettes. I think ZmOZ is still with us. Unless he has a tiny clown garage for a tiny clown car.<br />The big concern is the water produced - it'll start condensing on thing which is another good reason why you don't want open flame heating in a shop.
 

what66

Petty Officer 1st Class
Joined
Mar 29, 2004
Messages
244
Re: Does burning methanol create carbon monoxide?

I would think the risk is to high to use in that way.<br />I've never delt with methanol before but to me it seams a bad idead to have any open flame in a garage.<br />wht happins if you spill some gas :eek:
 

KRS

Banned
Joined
May 15, 2004
Messages
2,383
Re: Does burning methanol create carbon monoxide?

The vapor is highly flammable... so if you light it and it goes out OR you forget to light it, it evaporates into a cloud with the destructive force of a bomb.<br />.<br />Paul... any reference for the quantification of CO2 production: briquettes v.s. methanol? Let me know, thanks, would like to read about it.
 

Paul Moir

Admiral
Joined
Nov 5, 2002
Messages
6,847
Re: Does burning methanol create carbon monoxide?

Good point about flaming fluids in the garage. There's all sorts of good reasons not to do it. I was thinking about the same sort of heating with open flame propane or kerosene (like a kerosene heater) a while ago, and was thinking more of that.<br /><br />azfyrfyter63, that was just from some high school chemistry: <br />6 oz = 177ml (say, 200)<br />200ml of CH3OH = about 160grams <br />Molecular weight of CH30H = about 32 (C = 12, O = 16, 4 Hs at 1 apeice)<br />So, 160g / 32 g/mol = about 5 mols of CH3C0H<br />Carbons molecular weight is 12, so:<br />12 x 5 = 60g of carbon in that 6 oz.<br /><br />Oddly, I had a charcoal briquette (pretty much pure carbon) and a scale close at hand, and the briquette weighed 44 grams. <br /><br />Lol, maybe I think about this stuff too much.. :D
 

ZmOz

Captain
Joined
Aug 13, 2003
Messages
3,949
Re: Does burning methanol create carbon monoxide?

Come on, lubedude, you don't think a few formaldehyde fumes are going to stop me do you? :D I know it produces CO2 and uses oxygen, but so does any fuel powered heater, and there are many designed to be used indoors without a vent. There are also plenty of alcohol heaters designed to burn indoors as well.<br /><br />The open flame really isn't an issue...it barely goes above the can and I have a fire extinguisher near by.
 

KRS

Banned
Joined
May 15, 2004
Messages
2,383
Re: Does burning methanol create carbon monoxide?

True Paul, thanks for the math. I don't think that 6 minutes of methanol burning equates to an hour of charcoal burning though. Probably a bit of apples to oranges there.
 

kenimpzoom

Rear Admiral
Joined
Jul 13, 2002
Messages
4,807
Re: Does burning methanol create carbon monoxide?

The charcoal burns slower cause the air cant get to it.<br /><br />Energy is energy, regardless of how fast it burns.<br /><br />I dont think charcoal is pure carbon, it is partially burned wood.<br /><br />Ken
 

Paul Moir

Admiral
Joined
Nov 5, 2002
Messages
6,847
Re: Does burning methanol create carbon monoxide?

Dammit, my post was supposed to be rhetorical, not a model of irrefutable science! :D <br /><br />Thanks for the support though AMD Rules! :)
 

AMD Rules

Lieutenant Commander
Joined
Sep 23, 2004
Messages
1,707
Re: Does burning methanol create carbon monoxide?

Paul, you obviously payed a LOT more attention in chemistry than I did. I much preferred physics or mechanics. Keep them rhetorics coming!
 

ndemge

Commander
Joined
Jul 15, 2002
Messages
2,644
Re: Does burning methanol create carbon monoxide?

me thinks OZ needs a colman "buddy heater"
 

beniam

Petty Officer 2nd Class
Joined
Feb 2, 2005
Messages
113
Re: Does burning methanol create carbon monoxide?

Dude<br />All burning uses oxygen.And most all open flame burning is incomplete, therefore produces carbon monoxide. This will poisen your oxygen carrying capacity in your blood. Do not burn anything in an enclosed space,without a good chimney. It is really bad for you. You cannot smell CO, it will put you to sleep, and kill you dead. Try a bigger electric heater, cheap at Wallmart. Batavier
 

lakelivin

Lieutenant Junior Grade
Joined
Aug 19, 2004
Messages
1,172
Re: Does burning methanol create carbon monoxide?

Whats the cheapest you can get a radiant heater for? Sounds like one of those near your work space might make more sense than trying to heat the entire garage....
 
Top