Structure, Reactivity and Properties
Phthalocyanine blue (C32H16N8Cu) a complex of copper with phthalocyanine. Molecular mass is 576.08, melting point 600 C (with decomposition), the substance is practically insoluble in water (< 0.1g / 100 ml @ 20C), but soluble in concentrated Sulphuric acid. Density of the solid is ~1.6 g/cc. The color is due to a π-π* electronic transition, with λmax ~ 610 nm.
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