Copper monochlorophthalocyanine

Copper monochlorophthalocyanine (CAS 12239-87-1, EC 235-476-0) is a halogenated copper phthalocyanine pigment commercially identified as C.I. Pigment Blue 74250, Cyanine Blue G, Cyanine Blue B, and Blue BS. It carries no E-code designation and is classified under the broader phthalocyanine colorant family with the molecular formula C32H15ClCuN8.

In textile and paper dyeing, the pigment bonds to substrate surfaces through adsorption and surface wetting mechanisms, delivering a stable blue shade resistant to bleed-out. In industrial coatings and printing inks, it disperses into resin matrices to provide consistent colour strength and opacity, while in plastics compounding it functions as a mass-tone colorant with controlled tint undertone.

This pigment is supplied in dry powder form and is registered under REACH. Procurement teams should confirm lot-specific technical datasheets for purity grade, particle size distribution, and dispersibility parameters. Standard packaging formats vary by supplier; bulk and intermediate bag options are typically available for industrial volumes.