Copper monochlorophthalocyanine

Copper monochlorophthalocyanine (CAS 12239-87-1), commercially designated as C.I. Pigment Blue 15:1, is a bright, reddish-shade blue pigment derived from the copper phthalocyanine family.

Where is Copper monochlorophthalocyanine used?

• Coatings: high tinting strength and lightfastness in solvent- and water-based paints for exterior architectural and industrial formulations
• Plastics: in polyolefin and PVC compounds, resisting recrystallization during extrusion or injection molding
• Printing inks: offset, gravure and flexographic inks for packaging needing sharp, reproducible blue tones
• Textile and paper dyeing operations specify this pigment where surface uniformity and batch-to-batch consistency are evaluated.

Good to know: Monochlorination stabilizes the crystal form, preventing the phase transition that causes color shift in demanding processing environments.

Commercial specifications

• Flushed and predispersed variants for direct integration into ink and coating lines
• Pigment-grade purity