Sign in to follow this  
ironizer

What's flame temp. of isopropyl alcohol!

Recommended Posts

ironizer    11

I've searched all over the place, and i can't find it. So does anyone know what the flame temperature of isopropyl (rubbing) alcohol is?

 

P.S. Doesn't matter if it's 70%, 99%, or 100%

Share this post


Link to post
Share on other sites
RyanJ    34

Here is the quation for the reactioN:

 

[ce]2C3H7OH + 13O2 -> 6CO2 + 8H2O[/ce]

 

Work out the [math]\Delta H[/math] and you have your answer :)

 

Cheers,

 

Ryan Jones

Share this post


Link to post
Share on other sites
Darkblade48    11

Wouldn't the flame temperature be dependent on the portion of the flame you are measuring (i.e. base of flame vs. tip of flame) and the amount of air/fuel ratio you have as well (i.e. lots of oxygen for a little bit of alcohol vs. minimal oxygen for a large volume of alcohol)?

Share this post


Link to post
Share on other sites
ironizer    11

just spraying some and burning it in regular air. I just wanna have a general idea, don't need anything exact. I just want to know if it's chemically possible to melt something with it, so a variation of +/- 50-100 degrees C won't do any harm.

Share this post


Link to post
Share on other sites
Immunologist    10

At 99%, it is 53 celsius deg

http://www.sigmaaldrich.com/cgi-bin/hsrun/Suite7/Suite/HAHTpage/Suite.HsSigmaAdvancedSearch.formAction'>http://www.sigmaaldrich.com/cgi-bin/hsrun/Suite7/Suite/HAHTpage/Suite.HsSigmaAdvancedSearch.formAction

 

When looking for such info, look at the MSDS of the product, it is the Material Safety Data Sheet, delivered by producers of the product. Sigma-Aldrich produces almost anything (http://www.sigmaaldrich.com)

 

Good Luck!

Share this post


Link to post
Share on other sites
woelen    18

You cannot simply tell the flame temperature of any burning chemical. If you simply light some liquid, or when it is sprayed out into the air from a burner, there can be quite different temperatures. A nice example is the gas stove. The blue flames have a totally different temperature than the orange flames. So, it depends on how it is burnt.

 

However, in any case, the temperature will be at least a few hundreds of degrees Centigrade.

Share this post


Link to post
Share on other sites
YT2095    591

the only really accurate thing you could determine with this alc would be with a bomb calorimeter to find the energy value of combustion.

Share this post


Link to post
Share on other sites
ironizer    11

well, i saw those stats. that say for example gasoline can burn at 2400 degrees max, and natural gas like 3000 or something, because every flamable thing has a limit on high the temperature can get, i mean you can't make a 5000 degree fire with wood for example. I'm aware that the temp. depends on a lot of things like oxygen etc. but if isopropyl burns at around 50 C, dang, that's not even enough to make you say ouch

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Sign in to follow this