Malachite green metabolized into LMG. Only the cation MG is deeply colored, whereas the leuco and alcohol derivatives are not. This difference arises because only the cationic form has extended pi-delocalization, which allows the molecule to absorb visible light. The leuco form of malachite green was first prepared by Hermann Fischer in 1877 by condensing benzaldehyde and dimethylaniline in the molecular ratio 1:2 in the presence of sulfuric acid. Malachite green is traditionally used as a dye. Kilotonnes of MG and related triarylmethane dyes are produced annually for this purpose. MG is active against the oomycete "Saprolegnia", which infects fish eggs in
The Malachite Box "The Malachite Box" was released by Goslitizdat in 1944; the fourth by Sverdlovsk Publishing House in 1944; the fifth edition by Sovetsky Pisatel in 1947; the sixth by Goslitizdat in 1948; the seventh by Sverdlovsk Publishing House in 1949. The eighth was the last edition of "The Malachite Box" to be published during Bazhov's lifetime in 1950. In 1950 his decaying eyesight made the writing difficult. The last story "Zhabrei's Path" was published after his death. According to the All-Union Book Chamber's data as of 1 January 1981, the books in the Soviet Union were republished 253 times with a