acetone
colorless, highly flammable chemical compound (CH3)2CO used as an organic solvent, an ingredient in many lacquer thinner compounds and adhering liquids; ...
-Acetone - solvent chemical used in certain processing solutions that contain materials not normally soluble in water.
-Achromatic - lens system that has been corrected for chromatic aberration.
One solvent to avoid or to use with great care is Acetone. It's very, very good at removing grease. However it's also very, very good at dissolving plastics and paint. It's also difficult to find commercially in a pure form.
I am not sure what type of AR coatings are put on camera lenses, but many are quite durable and resistant to many solvents (we use isopropanol, methanol, acetone, toluene, sometimes even dish washing detergent).
Collodion is a solution of nitrocellulose in ether or acetone, sometimes with the addition of alcohols. Its generic name is pyroxylin solution. It is highly flammable. As the solvent evaporates, it dries to a celluloid-like film.
 See also: Image, Film, Type, Solvent, Coating
  
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