Here are some soapmaking oils and their shelf life.
Apricot Kernel 6 months to 1 year, keep in cool place
Avocado approx 1 year, keep in cool place
Calendula 6 months to 1 year. According to what oil is used for the infusion
Canola 6 months to 1 year, keep in cool place
Castor approx 1 year, keep in cool place
Cocoa Butter 1 year +, keep in cool place
Coconut 1 year +, keep in cool place
Corn 6 months to 1 year, keep in cool place
Emu 1 year room temp, 3+ frozen
Evening Primrose 6 months to 1 year, keep in cool place
Flaxseed Oil 3 to 6 months refrigerated
Grape seed 3 months to 1 year, keep in cool place
Hempseed 3 months refrigerated, 9months frozen
Jojoba Indefinite. Jojoba is not an oil, but a liquid wax.
Mango Butter 1 year, longer if refrigerated
Neem approx 1 year, keep in cool place
Olive 2 years, keep in cool place
Palm approx 1 year, keep in cool place
Peanut 6 months to 1 year, keep in cool place
Safflower approx 1 year, keep in cool place
Sesame 6 months to 1 year, keep in cool place
Shea Butter 1 year, longer if refrigerated
Soybean 3 months to 1 year, keep in cool place
Sunflower 3 months to 1 year, keep in cool place
Sweet Almond 6 months to 1 year, keep in cool place
Walnut approx 3 months, keep in cool place
Wheatgerm Oil approx 6 months, keep in cool place
Most oils need a very very high temperature before they break down.
Beeswax melting point is 147 °F, which doesn't degrade it. However, the flash point would 400 °F.
Most other oils actually degrade at even higher temperatures than beeswax.
In cooking they call that point the "Smoking point" which is when the properties of the oils are changing. Which makes sense, cause if it's giving off fumes, then obviously something is leaving the oil.
I found this list of oils sorted by what temperature they start to degrade at.
So we can see canola oil degrades at a very low temperature compared to most or all oils. lol
I remember soapbuddy mentioning that she always got DOS with canola, but I think soapbuddy also uses beeswax in her recipes because if helps keep the ash down. (Am I right?)
So, that said, I can definitely see how that was a possibility, since the degrading point of canola, and the melting point of beeswax are so close together. 147 °F and 225°F. It's still a big gap, but heck, it's not hard to get it up there.
List sorted by temperatures at which the oils begin to degrade or smoke.
200's
225 F: Canola Oil, Unrefined
: Flaxseed Oil, Unrefined
: Safflower Oil, Unrefined
: Sunflower Oil, Unrefined
300's
320 F: Corn Oil, Unrefined
: High-Oleic Sunflower Oil,
Unrefined
: Olive Oil, Unrefined
: Peanut Oil, Unrefined
: Safflower Oil, Semi-Refined
: Soy Oil, Unrefined
: Walnut Oil, Unrefined
325 F: Shortening, Emulsified
Vegetable†
330 F: Hemp Seed Oil¥¥
350 F: Butter (Good Eats)
: Canola Oil, Semi-Refined
: Coconut Oil†
: Sesame Oil, Unrefined
: Soy Oil, Semi-Refined
356-370 F: Vegetable Shortening
361-401 F: Lard
375 F: Olive Oil (Good Eats)
389 F: Macadamia Nut Oil††
400's
400 F: Canola Oil, Refined
: Walnut Oil, Semi-Refined
406 F: Olive Oil, Extra Virgin*
410 F: Corn Oil (Good Eats)
: Sesame Oil**
420 F: Cottonseed Oil†
: Grapeseed Oil¥
: Olive Oil, Virgin**
430 F: Almond Oil***
: Hazelnut Oil***
435 F: Canola Oil (Good Eats)
438 F: Olive Oil*
: Rapeseed Oil***
440 F: Peanut Oil†
: Sunflower Oil†
450 F: Corn Oil, Refined
: High-Oleic Sunflower Oil,
Refined
: Peanut Oil, Refined
(Good Eats)
: Safflower Oil, Ref.
(Good Eats)
: Sesame Oil, Semi-Refined
: Soy Oil, Refined
: Sunflower Oil, Semi-Refined
460 F: Olive Pomace Oil**
468 F: Olive Oil, Extra Light*
485 F: Grapeseed Oil**
495 F: Soy Bean Oil†
500's
510 F: Safflower Oil†
520 F: Avocado Oil, Refined
Here's the list in Alpha
Almond Oil*** 430 F
Avocado Oil: Refined 520 F
Butter (Good Eats) 350 F
Canola Oil: Unrefined 225 F
Semi-Refined 350 F
Refined 400 F
(Good Eats) 435 F
Coconut Oil† 350 F
Corn Oil: Unrefined 320 F
(Good Eats) 410 F
Refined 450 F
Cottonseed Oil† 420 F
Flaxseed Oil, Unrefined 225 F
Hazelnut Oil*** 430 F
Hemp Seed Oil¥¥ 330 F
Grapeseed Oil¥ 420 F
Grapeseed Oil** 485 F
Lard 361-401 F
Macadamia Nut Oil†† 389 F
Olive Oil: Unrefined 320 F
(Good Eats) 375 F
Extra Virgin* 406 F
Virgin** 420 F
Olive Oil* 438 F
Pomace Oil** 460 F
Extra Light* 468 F
Peanut Oil: Unrefined 320 F
Peanut Oil† 440 F
Peanut Oil, Refined
(Good Eats) 450 F
Rapeseed Oil*** 438 F
Safflower Oil: Unrefined 225 F
Semi-Refined 320 F
Refined (Good Eats) 450 F
Safflower Oil† 510 F
Sesame Oil : Unrefined 350 F
Sesame Oil**: 410 F
Semi-Refined 450 F
Shortening, Emulsified
Vegetable† 325 F
Shortening, Vegetable 356-370 F
Soy Oil: Unrefined 320 F
Semi-Refined 350 F
Refined 450 F
Soy Oil† 495 F
Sunflower Oil†: 440 F
Unrefined 225 F
Semi-Refined 450 F
Walnut Oil, Unrefined 320 F
Semi-Refined 400 F
High-Oleic Sunflower Oil,
Unrefined 320 F
Refined 450 F
This list is from>
http://www.goodeatsfanpage.com/collecte ... points.htm