This property is so striking for a green mineral that malachite is easy to identify. Malachite is one of a small number of green minerals that produces effervescence in contact with cold, dilute hydrochloric acid. The date of the last update corresponds to the publication date of the InfoCard and not necessarily to the date in which the update occurred in the source data. Malachite is a copper carbonate hydroxide mineral, with the formula Cu2CO3(OH)2. Malachite green is an organic compound that is used as a dyestuff and controversially as an antimicrobial in aquaculture.Malachite green is traditionally used as a dye for materials such as silk, leather, and paper.Despite its name the dye is not prepared from the mineral malachite, and the name just comes from the similarity of color.. Molecular Formula: C52H54N4O12 ... phenylmethylene)-2,5-cyclohexadien-1-ylidene)-N-methyl-, ethanedioate, ethanedioate (2:2:1);Malachite Green Oxalate;Ammonium, (4-(p-(dimethylamino)-alpha-phenylbenzylidene)-2,5-cyclohexadien-1-ylidene)-dimethyl-, oxalate (2:1), oxalate (1:1);Malachitegreen;Basic Green 4, malachite green; CAS Registry number: 2437-29-8 EINECS:219-441-7 Molecular Formula… Malachite is also used for decorative purposes, such as in the Malachite Room in the Hermitage Museum, which features a huge malachite vase, and the Malachite Room in Castillo de Chapultepec in Mexico City. Malachite was used as a mineral pigment in green paints from antiquity until c. It does not represent a new labelling, classification or hazard statement, neither reflect other factors that affect the susceptibility of the effects described, such as duration of exposure or substance concentration (e.g. The CLP Regulation makes sure that the hazards presented by chemicals are clearly communicated to workers and consumers in the European Union. Regulatory process names 1 IUPAC names 1 Other identifiers 1 . During the experiment, rats were fed up to 543 ppm of leucomalachite green, an extreme amount compared to the average 5 ppb discovered in fish. REACH registered substance data was upgraded on 9th November. The type of uses and classifications may vary between different submissions to ECHA and for a full understanding it is recommended to consult the source data. Taureans are known for … Malachite green is not a well-defined chemical, and the term may refer to the dye as either the chloride or oxalate salt (chromatic form), the neutral carbinol, or the reduced leuco form (Fig, 1). CAS Number: 2437-29-8 Formula: C52H54N4O2 Density: 1 g/mL Solubility: Water and Alcohol Synonyms: Basic Green 4, C.I. Note that for readability purposes, only the pictograms, signal words and hazard statements referred in more than 5% of the notifications under CLP are displayed. If generated, an InChI string will also be generated and made available for searching. Structural formula for common antifungal agents in aquaculture. Malachite is a copper carbonate hydroxide mineral, with the formula Cu2CO3(OH)2. Please upgrade your Internet Explorer to a newer version. Why is malachite green controversial? Other relevant information includes the following: To see the full list of notified classifications and to get more information on impurities and additives relevant to classification please consult the C&L Inventory. If a substance is classified under multiple CLH entries, a link to the C&L Inventory is provided to allow users to view CLH information associated with the substance and no text is automatically generated for the InfoCard. 1400-1600)-language text, Creative Commons Attribution-ShareAlike License, Bright green, dark green, blackish green, with crystals deeper shades of green, even very dark to nearly black commonly banded in masses; green to yellowish green in transmitted light, Massive, botryoidal, stalactitic, crystals are acicular to tabular prismatic. General Malachite Information : Chemical Formula: Cu2(CO3)(OH)2 : Composition: Molecular Weight = 221.12 gm Copper 57.48 % Cu 71.95 % CuO: Hydrogen 0.91 % H 8.15 % H 2 O: Carbon 5.43 % C 19.90 % CO 2: Oxygen 36.18 % O: 100.00 % 100.00 % = TOTAL OXIDE Infobox references: Brilliant green (also known as zelyonka or zelenka) is one of the triarylmethane dyes. Dense banded specimens are often sliced and polished to bring out their beautiful coloring. Show details. Because of its distinctive bright green colour and its presence in the weathered zone of nearly all copper deposits, malachite serves as a prospecting guide for that metal. 1258668-21-1 Flam. 215–540–4, is covered by three harmonisations: 005–011–00–4; 005–011–01–1 and 005–011–02–9), CLH information cannot be displayed in the InfoCard as the difference between the CLH classifications requires manual interpretation or verification. 201 } on how we use cookies every 24 hours and re-treat also. 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