Pyronine Y

Title: Pyronine Y
CAS Registry Number: 92-32-0
CAS Name: 3,6-Bis(dimethylamino)xanthylium chloride
Additional Names: N-[6-(dimethylamino)-3H-xanthene-3-ylidene]-N-methylmethanaminium chloride; [6-(dimethylamino)-3H-xanthen-3-ylidene]dimethylammonium chloride; tetramethyldiaminoxanthylium chloride; C.I. 45005; pyronine G
Molecular Formula: C17H19ClN2O
Molecular Weight: 302.80
Percent Composition: C 67.43%, H 6.32%, Cl 11.71%, N 9.25%, O 5.28%
Literature References: Prepn from dimethyl-m-aminophenol: Mohlau, Koch, Ber. 27, 2887 (1894); DE 58955; DE 59003; DE 63081 (1892 to Leonhardt); Frdl. 3, 92-94. See also: Colour Index vol. 4 (3rd ed., 1971) p 4417.
Properties: Ferric chloride complex, lustrous green crystals from alc. Soly in water at 26°: 8.96% giving a red soln. Soly in alc at 26°: 0.60%. Solns show a yellowish fluorescence. Absorption max about 552 nm; curves: Stotz et al., Stain Technol. 25, 57 (1950).
Absorption maximum: Absorption max about 552 nm; curves: Stotz et al., Stain Technol. 25, 57 (1950)
Use: Bacterial and biological stain.
Pyrophosphoric Acid Pyrosulfuric Acid Pyrosulfuryl Chloride Pyrovalerone Pyroxylin