Waving does not make the residue to go away. If anything it helps to distribute it more evenly over the surface of film and makes its presence less obvious.
It contains anti-static (an extremely fine grained white powder?) which is part of Kami drum mounting fluid and with some probability may contain a dissolved glue from the tape that was used to tape the film to the glass or drum.
Film cleaners also contain anti-static. With film cleaner the residue will never be gone completely but carefully wiping the film off after scanning is a good idea
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