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 anniversary since the birth of Pavel Bazhov. The series included the following films: "Sinyushka's Well" (1973), "The Mistress of the Copper Mountain" (1975), "The Malachite Casket" (1976), "The Stone Flower" (1977), "Podaryonka" (based on "Silver Hoof", 1978), "Golden Hair" (1979), and "The Grass Hideaway" (1982). Three hand-drawn animated films were released by Soyuzmultfilm in the 1970s: "Silver Hoof" in 1977 directed by Gennady Sokolsky and written by Genrikh Sapgir, "The Master Craftsman" in 1978 directed by Inessa Kovalevskaya, was based on "The Stone Flower" and "The Master Craftsman"; "The Fire-Fairy" in 1979 directed by Natalia Golovanova. The Malachite Box The