Organic solutions that corrode metals Most of the common organic solvents are regarded as noncorrosive, but  stainless steel can be attacked by formic, acetic, and propanoic acids.
Corrosion of stainless steel by organic solvent mixtures, Alice Y. Ku , David H. Freeman, Anal. Chem., 1977, 49 (11), pp 1637–1638
DOI: 10.1021/ac50019a044
Are there some aromatic hydrocarbon that attack stainless steel? Which organic solvents can corrode copper and aluminium?
Picric acid (2,4,6-trinitrophenol) is an aromatic compound has been used as an etchant in the past. Picral is an ethanol solution of picric acid and could etch steel. Look up www.metallographic.com/etchants/etchants.htm