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Used Vegetable Oil

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McGraysoldtowngifts

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Hello all


I have a huge amount of Used Vegetable oil hanging around the house in 5 gallon jugs. I have the ability to filter the oil but could this be used in cold process soap?

Todd
 

Steve85569

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What kind of oil?
What was it used for. Fish? Potatoes
How are you going to filter it and remove odours? ie baking soda etc?

I know you're looking for answers but your question raised those right off.
 

KristaY

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Yes, it can be used. There have been many threads on cleaning used oil but I can't find any at the moment, lol. People often get used oil from restaurants just to repurpose it into soap. Hopefully someone will come by that can give you the procedure or the link. One thing you'll need to know is exactly what's in it (the types of oils and their percentages) so you can calculate the lye correctly.
 

DeeAnna

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Lots of resources on SMF and elsewhere, but here are a few leads to get you started:

http://www.soapmakingforum.com/showpost.php?p=381830&postcount=15
http://handmadesoapcoach.com/dont-throw-out-that-rancid-oil-make-soap/
Production of high quality castile soap from high rancid olive oil by Girgis, Grasas y Aceites. Vol. 54. Fasc. 3 (2003), 226-233

You may also want to do a "boiled and salted out" process for saponification rather than a CP or HP process to ensure the fat is fully saponified and to remove more of any contaminants not removed when the fat was cleaned. See:

http://www.soapmakingforum.com/showthread.php?t=32717
http://www.soapmakingforum.com/showthread.php?t=52103
 

McGraysoldtowngifts

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Thanks guys for the quick reply most of the oil was used to cook chicken and potatoes I also have a nice collection of bacon grease which I already found the cleaning procedure for . I just could not find one for the vegetable oil . I am not sure what the makeup of oil is just your cheap vegetable oil that Wal-Mart sells .
 

Obsidian

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If its just labeled vegetable oil then its most likely soybean oil. Soy is prone to DOS at higher amounts and in all honestly, I don't really care for soy in soaps and won't use it any more.
 

green soap

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Vegetable oil = soy oil

I no longer buy it (switched to peanut oil) but I have used it for liquid soap for a few years. It makes a great liquid soap with used 70-80% veg oil and 30-20% (new) coconut oil. I use it for dish soap and it performs quite well. I have also used it for CP soap, works OK but it is more perishable than soaps made with 'new' oil. Just use it before it 'expires'. Not my favorite in CP soap, but in liquid soap it works as well as olive oil, if not better.
 
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