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Molecular Formula Assay a Molecular Weight Appearance Melting Point Volatiles Partical Size TGA b @ 335.9°C ( LC ) (Air @ 20°C/min. rate) | C30H22N2 O2 99% min. 442g/mole Slight Yellowish powder 269-271°C <0.10% <50 (mean micron) 90% Retention |