hkshooter
All bottles I have indicate "ammonia D", whatever that is, not ammonia. However, the msds doesn't indicate any ammonia either. I think it's a marketing gimick.
From the Windex web site:
Ammonia-D® is the trademark name for the ammonia in Windex®. The 'D' is part of the trademark name.
While your email did not indicate which Windex® product you were asking about, you should be aware that most of our Windex® products are glass and surface cleaners only, and not all formulas contain ammonia.
All but two Windex® Glass and Multi-Surface Cleaners contain detergents, solvents, fragrance, Ammonia-D®, and alcohol. They should not be used if ammonia is not recommended for use on surface.
(Windex® Multi-Surface Vinegar and Windex® Outdoor Multi-Surface do not contain ammonia. They are safe to use in these cases.)
They seemed to say that Windex does contain ammonia and should not be used if ammonia is NOT recommended..
Matt Swan is the only warning against Windex (or ammonia) cleaning when Tamiya Flat Base is used. Has anyone heard first hand account of gumming up in this situation?
Personally, I am concerned about effect of ammonia on brass and other metallic platings and avoid using Windex for cleaning. But I heard of many experienced modelers using Windex without any adverse effect and consider it an effective cleaner for airbrush.