Officials Warn of Spontaneous Combustion Risk of Linseed Oil and Other Common Household Products

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    Jul 25, 2016 1:38 PM GMT
    I know some guys here like to be handymen around their homes, and do other work with their hands. I used to make wooden kids' toys as a hobby, also wooden musical instruments (Blue Grass banjoes, 3-string mountain dulcimers), miniatures (aka "dollhouses"), even small items of wooden furniture, shadow boxes, etc.

    And I used linseed oil for certain woods and finishes. But even I didn't know that linseed oil could be so spontaneously combustible. Inflammable, yes, but not ignite on its own. The more volatile materials needed special handling, naturally, but somehow linseed didn't seem that active.
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    Jul 25, 2016 2:12 PM GMT
    Why I dont know but Linseed Oil is expensive these days. People here favor it for spraying decks and exposed wood. Done often enough has a nice honey color.
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    Jul 25, 2016 5:28 PM GMT
    Funny you should mention this. Yesterday I was digging around in my attic for some wood dye for a clock I'm restoring, when I found a bottle of boiled linseed oil and noticed the spontaneous combustion warning on the label. Not sure it's a good finish for an oak clock case, so it'll probably go away for another 10 years.
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    Jul 25, 2016 6:00 PM GMT
    It won't spontaneously combust in a bottle or can. It's when it's soaked into rags that are then piled up in a waste can. High surface area + exothermic oxidation + insulation ---> temperatures can build up to the flash point. Sort of what happened when someone got the bright idea to use chopped-up tires for road fill a few years ago.

    As someone who keeps shelves full of old laboratory chemicals, I'm more concerned about the ethers, which can evaporate and leave explosive crystals in the cap threads. It's possible that an old bottle can detonate when you open it. Buy ether only in small quantities and send the remainder out to the hazardous waste pickup before it gets old.


    (Or use it all to get "dates" on a slow night.). icon_twisted.gif


    I did NOT say that. icon_surprised.gif
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    Jul 25, 2016 6:05 PM GMT
    pellaz saidWhy I dont know but Linseed Oil is expensive these days. People here favor it for spraying decks and exposed wood. Done often enough has a nice honey color.

    Maybe it's because we're eating it now. Linseed oil and flax seed oil are the same thing. (Although flax seed oil is food grade and linseed oil is very likely not.) Flax seed oil is high in omega 3.
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    Jul 26, 2016 3:29 PM GMT
    https://www.youtube.com/watch?v=MT-JIJTSpF0
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    Jul 27, 2016 12:36 AM GMT
    eagermuscle saidhttps://www.youtube.com/watch?v=MT-JIJTSpF0


    Thanks. Amazing what is on youtube. Never saw that episode.