3-mercaptopropionic acid transportation and storage methods is a kind of bipyridine, can be used as an analytical reagent for the detection of ferrous, silver, cadmium, molybdenum; As a REDOX indicator. White or light red crystalline powder, soluble in alcohol, ether, benzene, trichloromethane and petroleum ether; Dissolved in water, the solution appears red in the presence of ferrous salts....