Assertion: percent formic acid | /r/HasProperty | 33 percent water
Facets:
Source sentences:
text: The topping column is fed, on the 20th tray from the bottom, with a mixture which, including the recycled azeotrope column residue, contains by weight about 59 percent formic acid, 33 percent water, 6 percent acetic acid, and 2 percent light ends including methyl ethyl ketone, ethyl acetate, and methyl acetate.