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 was presented to the author for his 60th birthday on 28 January 1939. Several test copies were published in January. A special deluxe edition, decorated with malachite, was sent to the 1939 New York World's Fair. The mass market edition published in autumn of the same year. The book was an instant success. It has been republished many times. Overall, twenty three editions of the stories were released from 1941 to 1945. The second edition of the collection was released by the Moscow publishing house Sovetsky Pisatel in 1942. The book was awarded the Stalin prize. The third edition of