Malachite Green CAS#569-64-2

Pigment Green 18 (Malachite Green) is an organic dye that is easily soluble in water, and its aqueous solution is blue-green. The killing effect on fish parasites and mold in fish eggs is remarkable, so it is also widely used in aquaculture.

Malachite green is an organic compound salt first synthesized by German organic chemist Hermann Fischer in 1877. It is a bright green crystal with metallic luster. Its chemical structure consists of three benzene rings connected to carbon atoms in the core, two of which are hydrogens in different benzene rings, substituted with diaminoamine groups (as shown in the figure below), which are classified as extensions of triphenylmethanes Dye 1. Although it has been replaced by malachite green, it has a completely different composition from the natural mineral malachite 2, and is named “Malachite” only because of its similarity in color.

Malachite Green CAS#569-64-2

Pigment Green 18 Basic information
Product Name: Pigment Green 18
Synonyms: TETRAMETHYLDI-P-AMINOTRIPHENYLCARBINOL CHLORIDE;S NO 754;VICTORIA GREEN G;HIDACO MALACHITE GREEN BASE;FAST GREEN O;CI 10000;CI NO 42000;CHINA GREEN
CAS: 569-64-2
MF: C23H25ClN2
MW: 364.91
EINECS: 209-322-8
Product Categories: Triphenylmethane;Biological stain;Amines;Aromatics;UVCBs-inorganic;Organics;Dyes and Pigments
Mol File: 569-64-2.mol
Pigment Green 18 Structure
Pigment Green 18 Chemical Properties
Melting point 158-160°C
Boiling point 520.91°C (rough estimate)
density 1.0448 (rough estimate)
refractive index 1.5940 (estimate)
storage temp. Refrigerator
solubility Very soluble in water; soluble in ethanol, methanol, amyl alcohol
Colour Index 42000
pka 6.90(at 25℃)
form Solid
color Brown
PH Range 0(green)-2(green-blue)
λmax 615nm, 425nm
BRN 3580148
Stability: Stable. Substances to be avoided include strong oxidizing agents.
Biological Applications Antiseptic formulation; detecting nucleic acids; early diagnosis of tuberculosis; identifying mammal genes; treating cancers,fungal diseases,pulmonary tuberculosis; medical device
Major Application Photoresists, color filter, printed circuit board, sol-gel matrix, liquid crystal displays, decoder system, inks, highlighters, herbicides, disinfectants, cosmetics, identifying mammal genes, detecting nucleic acids, mycobacterial growth, radiochemotherapy, wound dressing materials, antitumor agents, treatment of patients with pulmonary tuberculosis Malachite Green
InChIKey FDZZZRQASAIRJF-UHFFFAOYSA-M
LogP 0.620
CAS DataBase Reference 569-64-2
EPA Substance Registry System Malachite green (569-64-2)

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