p-Anisidine, a grey-brown solid, is the most toxic of the three isomers of anisidine. It can be used for the detection of fats and oils, since p-Anisidine reacts with aldehydes and ketones in fats and oils to form products that absorb at 350 nm wavelength of light.
参考文献
Weast, R.C., CRC. Handbook Chem. Phys. (1981); Steele, R., Understanding and Measuring the Shelf-Life of Food (2004);