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 and trauma, which Bazhov endured between January 1937 and 1938, and noted that "The Malachite Box" "is filled with unprecedented for Soviet (and especially children's) literature horror". At that time Bazhov was fired from Sverdlovsk Publishing House, where he had worked since 1931, and expelled from the Communist Party for "glorification of people's enemies" in his recent book. His past as a member of the Socialist Revolutionary Party and a seminary teacher was also questionable. He was once summoned for interrogation by NKVD, but luckily his investigator was arrested the day before the meeting. The author was reinstated in the