Butane canister

My FM has the same display. I can't figure out who is buying them. My local Asian Mega-store has similar butane which makes more sense. But yeah for summer trips for dinner or lunch it looks good but not icy Cascade breakfasts?

8oz is way too much fuel most of the time. When i bring my 4oz canister i feel like its barley worth the weight.

If it's in a Asian market, it's likely for a tabletop burner which takes a butane yes, 100% butane, canister. Be careful because some are keyed to give vapor feed in the only orientation the tabletop stove allows. Operating it in a different position could cause flare ups due to liquid feed.

Keep your face away from the area above the stove until you determine that. And even then.

Edited to say: it was sloppy of me to say "100% butane" when I meant "essentially just butane" or "not a butane-propane mix with a higher vapor pressure for cold weather use".

Thanks for the catch, Stuart (below).

I've seen those at Fred Meyer for several years now. I always looked but never bought one. The store nearest me (Wood Village) also carries the small Jetboil cannisters which are great for a 2-3 night trip–they're smaller than the small MSR canisters.

I really miss GI Joe's–the Gresham, OR store always carried both small and large MSR canisters. The DICK's Sporting Goods (capitalized to get around the BPL profanity filter) that moved into the same building carries only propane. I have to drive to Clackamas to REI to get MSR now.

Jerry, please let us know how the "Burton's" canisters work for you! It might be a cheaper option for warm weather.

Edited to correct header, which picked up a cut/paste from my previous post!

“Butane” canisters, contrary to what you might think, do not actually contain pure butane. This should not be a surprise: why would a manufacturer go to the expense of refining pure butane which is only going to be burned in a camping stove? “Butane” canisters contain mostly butane, but contain other hydrocarbons as well.

The Coleman/Campingaz MSDS tabulates the contents of all their canisters under three headings: Butane, Super Butane and Butane-Propane Mix.

Butane: composition in compliance with French decree of 3/9/79

The decree refered to is issued by the Comite Francais du Butane et du Propane which proscribes the properties of commercial Butane which it defines (in French) as “a mix of hydrocarbons made up mainly of butanes and butenes and containing less than 19% by volume of propane and propene”. It also requires the vapour pressure of the mixture to be less than 6.9 bar at 50C.

The MSDS also specifies the atmospheric boiling point of “Butane” to be -5C.
In contrast, pure butane boils at -0.5C

So, “Butane” canisters are perfectly suitable for summer use, and usually cost a whole lot less than butane/propane mixtures.