Olive oil in CP

Discussion in 'Lye-Based Soap Forum' started by Mooicle, Aug 14, 2019.

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  1. Aug 24, 2019 #41

    Zany_in_CO

    Zany_in_CO

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  2. Aug 24, 2019 #42

    linne1gi

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    That’s amazing! And although I have read this article before, it was good to reread it. I use olive oil the most of any oil in my inventory. The only time I got DOS in the past 6 years was when I used Rice Bran Oil, which I had purchased from Lowe’s. I had a lot of it, so made a lot of soap and eventually they all developed DOS. For that reason I will not use Rice Bean Oil again. For me Grapeseed oil is also suspect because of the high linoleic and linolenic acid numbers. As far as I know my Olive oil soaps have been okay and since I tend to cure them longer, they are still around my house 6 months or longer without any problems. Anyone else care to chime in?
     
  3. Aug 24, 2019 #43

    Mobjack Bay

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    Almost every soap I have made has included at least 20% OO. I’m also using the yellow OO from the grocery store. I started at 5% SF, but dropped it to 2-3% a couple of months ago, with the Castiles being nominally 0-1% (could be higher for reasons I won’t explain here). I also try to keep my Linoleic and Linolenic combined below 15%. Up until this week, the one spot of DOS I’ve seen was in an early-ish batch that was high in soft oils other than OO and likely had a SF > 5%. That’s out of hundreds of bars of soap. This week I also found a spot of DOS on an end slice of a soap I made in early July that has 12% hemp oil. The DOS is right where I tried to stamp it with a piece of silver jewelry. Luckily, it didn’t work and I didn’t do that to the rest of the soap, which is fine. Which metals are the culprits? If high grade stainless whisks and pitchers and sea salt, which contains some metals, caused DOS under general use conditions, it seems like there would be a lot more reports of DOS.
     
  4. Aug 24, 2019 #44

    Dawni

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    Thanks to those who replied to my questions :)
    I also watch my numbers for linoleic and linolenic.. I try to keep them under 15 and they're usually lower, except for the outliers I experimented with like Castile, high RBO.. I've not noticed DOS in any of my soaps with RBO by the way, and I've used up to 30% in some. I also use filtered tap water... Could be that combined with 100% pomace, and a lot of sea salt, that caused the DOS here, and not any other soap, even older ones?
     
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  5. Aug 24, 2019 #45

    linne1gi

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    You make a good point, we all or anyway, lots of us, use wire whisks, and stainless bowls when we are making soap, but we’re told not to allow our soap to come into contact with metals. Doesn’t make a lot of sense. And if it were that bad, we would hear of a lot more problems.
     
  6. Aug 24, 2019 #46

    linne1gi

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    The only other change I made after finding DOS a couple of years ago, is to only use distilled water. Or other liquids such as milks, Aloe, etc.
     
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  7. Aug 24, 2019 #47

    Mobjack Bay

    Mobjack Bay

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    I forgot to mention that I use distilled water when I use water, but I also use aloe and goat milk on occasion. As for metal, stick blenders also have stainless steel parts.
     
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  8. Aug 25, 2019 #48

    earlene

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    Looking online, I found several MSDS' for olive oil from different US companies, but not the one for Kirkland Signature Pure Olive Oil.

    I am willing to bet that Kirkland is required to have all SDS' for their oils on file in their manufacturing plant because oils are flammable and under OSHA would be considered potentially hazardous. In fact there are many food items that are potentially hazardous. Lye is used in the food industry and in several food recipes in restaurants and in the industry. So yes, they should have them.

    The fact that there is some difficulty getting it when asked is a problem that can be resolved with some persistence, I suspect.

    Perhaps calling or going to speak with the store manager and explaining the reason you are required to have the SDS on file would help. If not, I would go up the line of command. Or perhaps I'd just start at the top and contact the CEO. I've done that in the past (not with Costco) and always got results. Even if it was a copy of an email the CEO forwarded to the person who should deal with the request, at least it gets their attention.
     
    Last edited: Aug 25, 2019
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  9. Aug 25, 2019 #49

    Saltwater Scented

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    I just used Walmart EVOO for a few batches. Guess I'll have to keep a close eye on them to see what happens. Costco is right down the street so that might be the go to source from now on.

    Color me highly cynical but when a supplier puts out a test showing only their product works compared to anonymously sourced competitors, I kind of chuckle and say "cool story bro."
     
  10. Aug 25, 2019 #50

    linne1gi

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    Actually oils are not particularly flammable. In fact, Olive Oil has a very high flash point. I believe it’s 460 Fahrenheit.
     
  11. Aug 25, 2019 #51

    Saltwater Scented

    Saltwater Scented

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    Oils by themselves are pretty safe. It is their vapor that causes the fires as in when they spatter from cooking and hit an open flame. This is the cause of a lot of Thankgivng and Christmas house fires from people deep frying turkeys.

    Olive oil has one of the lowest flash points, about 410. It is a great little oil to use in a restaurant "show kitchen" because it flames very easily on a gas stove.
     

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