Malachite green (LMG) is used as a detection method for latent blood in forensic science. Hemoglobin catalyzes the reaction between LMG and hydrogen peroxide, converting the colorless LMG into malachite green. Therefore, the appearance of a green color indicates the presence of blood. In 1992, Canadian authorities determined that eating fish contaminated with malachite green posed a significant health risk. Malachite green was classified a Class II Health Hazard. Due to its low manufacturing cost, malachite green is still used in certain countries with less restrictive laws for non aquaculture purposes. In 2005, analysts in Hong Kong found traces of malachite green
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