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form: powder color: Red-brown Appearance: Reddish brown powder Boiling point: 486.01°C composition: Dye content, ≥85% Melting point: 199 °C (dec.) (lit.) Solubility (soluble in): Chloroform,Benzene,Ether,Acetone Solubility in water: Insoluble λmax: 508-512 nm in ethanol