The reaction products in the photooxidation of o-xylene were analyzed by a new gas chromatograph/photoionization mass spectrometer. There were two types of reaction products, ie, high-and low-boiling point products. Tolualdehyde, dimethylphenols, and dimethylnitrobenzene were the main high-boiling point products and formaldehyde, acetaldehyde, glyoxal, methylglyoxal, and biacetyl were identified as low-boiling point ...
