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As you can see in the photo below, there is a small label which says: "Do not clean windows with hydrogen peroxide or acetone". Why is that and what can be used instead of those chemicals to clean the windows? Water, maybe? Do astronauts have something on board to clean these windows if they get dirty?

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    $\begingroup$ Acetone is a very good solvent and often damages a variety of plastics. $\endgroup$
    – AJN
    Oct 8, 2021 at 12:27
  • $\begingroup$ I made the mistake of cleaning a CD with acetone once @AJN. Oops. $\endgroup$
    – GdD
    Oct 8, 2021 at 15:17
  • $\begingroup$ possibly an oleophobic coating? Those do not agree with peroxide, and the underlying polymer plastic of the window is not friends with Acetone. $\endgroup$
    – CuteKItty_pleaseStopBArking
    Oct 9, 2021 at 7:21
  • $\begingroup$ You definitely don't want to clean it with both at the same time... en.wikipedia.org/wiki/Acetone_peroxide $\endgroup$
    – Dave Gremlin
    Oct 9, 2021 at 22:01
  • $\begingroup$ Those are both potentially fairly harsh chemicals. Isopropyl alcohol or detergent-based cleaners might be more appropriate. $\endgroup$
    – ikrase
    Jan 14 at 5:02

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