I like Dave Provine's suggestion of using acetone!
REMA also makes their own fast evaporating "Pre-Buff" cleaner for removing surface contamination from a punctured tire. Seems to work well and a single 1 quart (.9 liter) tin lasts for years so the high initial cost is ultimately fairly reasonable. I've had this same can for several years.
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BOB HANSON, ALBUQUERQUE, NEW MEXICO, USA