How long....

[ellajoan]

.....should the burn time be of an 8 oz soy candle?  We use 464, and we tell people that our burn time is around 30-40 hours (if they trim their wick).  I found a popular soy candle online that claims their 8 oz all soy candles last 70 hours.  Do different waxes last longer?    I specifically asked them if they added paraffin, and they said they did not.  

 

I suspect from the look of it that it's C4 (small bubbles around the edge), but there is no characteristic "cottage cheese" look after it burns at all.

[ellajoan]

I meant to say C3, not C4. 

 

[Jcandleattic]

Yes, different waxes, shape of jar, wick type, % of scent used, all can affect the burn times of any candle. That candle that burned longer might be using a different wax, different additives, different jar, etc. to get the longer burn. 

[ellajoan]

Interesting.  Doesn't 70 hours just seem super long for an 8 oz soy candle, though?  

[Jcandleattic]

Not really. Of course I'm not familiar with how soy burns, so my calculations might be off for a soy candle, but I can get my paraffin 5 ounce candles to burn on the low end approximately 30-40 hours or longer (usually actually much longer) depending on environment conditions. 

That's about 6-8 hours per ounce, so add 18-24 hours to that for an 8 ounce and you get close to a 70 hour burning candle. 

 

I guess what I'm trying to say, is if I saw that burn rate on an 8 ounce candle, I personally wouldn't question it. But that would be because I would be basing it off of my experience with my own candles. 

[ellajoan]

Can any soy wax users weigh in?  I'm just perplexed--if there's a way to get a pure soy candle to burn longer, I need to learn it!

[birdcharm]

I haven't kept exact track of an 8-ounce, but I did write down each burn session on just under 9 ounces and it came out to 41 hours for GW464.

 

 

[shicks]

I when I did the square mason jars that  have 7 oz  with c3 and eco 10 wick I got around 40 to 42