Malachite Green Powder *

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Malachite Green Powder | Biological Stain & Chemical Dye | 10, 25 & 500 Gram Packages | For Endospore, Ich, Koi Fish Fungus, Fin Rot, Velvet | Aquaculture Antimicrobial | Antibacterial | Oxalate Salt | O.R. | "MG"

    Chemical Properties Of Malachite Green Oxalate Sold Online At

    • CAS Number: 2437-29-8
    • Molecular Formula: C48H50N4O4-2H2C2O4
    • Formula Weight: 927.03
    • Absorption Max: 614 (425) nm
    • Interval (1): pH 0.0 (yellow) to pH 2.0 (green)
    • Interval (2): pH 11.6 (blue-green) to pH 14.0 (colorless)

    Malachite Green Chemical Properties And Reference Information

    Information On Malachite Green From Wikipedia

    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.


    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 commercial aquaculture, MG has been used to treat Saprolegnia and is used as an antibacterial. It is a very popular treatment against Ichthyophthirius multifiliis in freshwater aquaria. The principal metabolite, LMG, is found in fish treated with malachite green, and this finding is the basis of controversy and government regulation. See also Antimicrobials in aquaculture. MG has frequently been used to catch thieves and pilferers. The bait, usually money, is sprinkled with the anhydrous powder. Anyone handling the contaminated money will find that on upon washing the hands, a green stain on the skin that lasts for several days will result.

    Niche Uses Of Malachite Green 

    Numerous niche applications exploit the intense color of MG. It is used as a biological stain for microscopic analysis of cell biology and tissue samples. In the Gimenez staining method, basic fuchsin stains bacteria red or magenta, and malachite green is used as a blue-green counterstain. Malachite green is also used in endospore staining, since it can directly stain endospores within bacterial cells; here a safranin counterstain is often used. Malachite green can also be used as a saturable absorber in dye lasers, or as a pH indicator between pH 0.2–1.8. However, this use is relatively rare.

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    Questions & Answers

    • Is this Malachite Green Zinc free? or have I missed this in the informatione provided.

      Yes, this is a Zinc free product.