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View Diary: What Exactly is in Dilbit? It is a Secret. (242 comments)

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  •  "That noxious odor" is likely from sulfur, in part (2+ / 0-)
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    Agathena, elwior

    The analysis in the link says the bitumen is a little over 4% sulfur by weight, if I'm reading it right.  That seems a lot.  
    An old (1971) government report classifies crude over 0.50% sulfur as high sulfur.  It lists typical sulfur content from various fields.  Of several hundred listed, only a handful were over 4%; perhaps two to five made it to 6%.
    The main chemicals in skunk spray responsible for the smell are sulfur containing compounds.
    A type of crude oil earned the name "skunk oil.

    In 1885 he [Herman Frasch] started the Imperial Oil Company, Petrolia, Ontario. The oil from Petrolia contained up to 0.7% sulfur, which gave the petroleum made from it a strong odor and the name skunk oil, which was practically not marketable. After several tries he was able to desulfurize the petroleum by reacting the oil vapor with a mixture of iron, lead, and copper oxide. The formed sulfides were roasted in air to remove the sulfur, to reform the oxides which could be then reused. His product became a serious competitor to Pennsylvania oil.

    We're all pretty strange one way or another; some of us just hide it better. "Normal" is a dryer setting.

    by david78209 on Mon Apr 08, 2013 at 03:03:33 PM PDT

    •  The sulfur content of the crude oil is (1+ / 0-)
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      a measurement of the total amount of sulfur contained in all sulfur containing compounds in the crude.   That total is not the same measurement as the amount of hydrogen sulfide and methyl mercaptan contained in the crude.   Those are the primary two compounds that will impart the strong sulfur odors from the crude presently being experienced in Mayflower, AR.    Phenyl and ethyl mercaptan might also be present.  

      All of the volatile sulfur compounds present will be just a small portion of the total sulfur content of the crude, which will mostly consist of non-volatile compounds other than the ones mentioned about.

    •  The link is a general list and not a chemical (2+ / 0-)
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      elwior, Don midwest

      composition. All Exxon revealed was that it was Wabasca Heavy Crude. It's hazardous material that is allowed to flow under people's homes, beside lakes and forests, across farmlands. It kills everything living thing it touches in the landscape like black death.

      Most of the videos of the site that I've seen were by activists and witnesses and most were prefaced by car ads. Ironic eh?

      •  You said: (0+ / 0-)

        "It kills everything living thing it touches in the landscape like black death."

        Sorry, but nothing at all contained in any of these tar sands crude stocks has any action of acute toxicity upon dermal exposure that would cause any such result as you claim.

        •  I'm talking about flora and fauna (1+ / 0-)
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          Don midwest

          everything it touches will die, even the ducks that are scrubbed clean don't survive

          You know what I am talking about. It seems to me that you are just doing a reflexive counter comment for almost every comment I make. Many of your comments don't even make sense.

          dermal exposure? I'm talking about fur and feathers. "living things" doesn't refer to people.

          •  There is nothing of the nature of an (0+ / 0-)

            organo phosphate compound that can kill quickly with very limited dermal exposure contained in tar sands crude.

             Exposure of animals to the low molecular weight solvents contained in all crude oil (both conventional heavy sour crude and tar sands synthetic crude) suffer solvent toxicity with similar characteristics to ethanol toxicity....and it can kill and cause nervous system damage if there is substantial body surface exposure.      But such toxicity requires both substantial time of exposure and high proportion of total body area exposed.

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