Methyl Green

Name: Methyl Green

CAS Registry Number: 7114-03-6

CA Index Name: Benzenaminium, 4-[[4-(dimethylamino)phenyl][4-(dimethyliminio)-2,5-cyclohexadien-1-yli-dene]methyl]-N-ethyl-N,N-dimethyl-, bromide chloride, compd. with zinc chloride (ZnCl2) (1:1:1:?)

Other Names: Ammonium, [α-[4-(dimethylamino)phenyl]-α-[p-(dimethyliminio)-2,5-cyclohexadien-1-yli-dene]-p-tolyl]ethyldimethyl-, bromide chloride, compd. with zinc chloride; Benzenaminium, 4-[[4-(dimethylami-no)phenyl][4-(dimethyliminio)-2,5-clohexadien-1-yli-dene]methyl]-N-ethyl-N,N-dimethyl-, bromide chloride, compd. with zinc chloride; Benzenaminium, 4-[[4-(di-methylamino)phenyl][4-(dimethyliminio)-2,5-cyclohex-adien-1-ylidene]methyl]-N-ethyl-N,N-dimethyl-, bromide chloride, compd. with zinc chloride (ZnCl2); Zinc chloride (ZnCl2), compd. with4-[[4-(dimethylamino)phe-nyl][4-(dimethyliminio)-2,5-cyclohexadien-1-ylidene] methyl]-N-ethyl-N,N-dimethylbenzenaminium bromide chloride; Ethyl green; Methyl green; Sigma Ethyl green; Sigma Methyl green; C. I. 42590

Merck Index Number: Not listed

Chemical / Dye Class: Triphenylmethane

Molecular Formula: C₂₇H₃₅BrClN₃ × ZnCl₂

Molecular Weight: 653.24

Physical Form: Red-brown powder

Solubility: Soluble in water, ethanol; insoluble in xylene

Melting Point: > 300 °C

pH Range: 0.1-2.3

Color Change at pH: Yellow (0.1) to greenish-blue (2.3)

Absorption (λ_max): 629 nm, 423 nm

Synthesis: Synthetic method

Staining Applications: Brain; spinal cord; bacteria; chromosomes; nicotinic acetylcholine receptor; nucleic acids; phosphates; polyphosphates; tocopherol; tocopherol acetate

Biological Applications: Detecting phosphates, polyphosphates, tocopherol, tocopherol acetate

Industrial Applications: Spatial light modulators; security applications

Safety / Toxicity: No data available

Certification / Approval: Certified by Biological Stain Commission (BSC)

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