pentane lists at mild gasoline odor, pleasant. vaseline is supposed to be odorless, so it doesnt seem like the main ingredient in this residue is either of those. or at least something really strong and bad smelling is present as well..
someone else hypothesized sulfur? could be, its in all msds at <1 ppm, but concentrated into about 0.05g sample gained from 500 grams of butane used might smell pretty strong then.
someone else hypothesized sulfur? could be, its in all msds at <1 ppm, but concentrated into about 0.05g sample gained from 500 grams of butane used might smell pretty strong then.
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