2018 Volume 67 Issue 4 Pages 179-184
An example of Al corrosion in organic solvent is shown here. Severe Al corrosion occurred in a short time in Polypropylene Glycol Monobutyl Ether （PGME） including about 2％ of N-Phenyl-1-Naphtylamine at a temperature of 110℃. An investigation showed that the corrosive medium of Al was PGME itself, the principal component of the solvent. Al is replaced with H of OH group, a component of PGME, to form an organic Al compound, dissolving in PGME, while H separated from PGME changed into hydrogen gas. Here we show the corrosion status, the procedure and results of the investigation, and the results of the corrosion reproduction test.
