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.

The monochlorination stabilizes the crystal form, preventing the phase transition that causes color shift in demanding processing environments. It is specified across coatings, plastics, and printing applications.

In solvent-based and water-based paints, it delivers high tinting strength and excellent lightfastness, supporting exterior architectural and industrial coating formulations. This ensures long-term color stability.

Plastics processors use it in polyolefin and PVC compounds where resistance to recrystallization during extrusion or injection molding is a key performance requirement for high-heat manufacturing.

Printing ink manufacturers incorporate it into offset, gravure, and flexographic inks for packaging applications requiring sharp, reproducible blue tones. It is a staple for high-quality commercial printing.

Textile and paper dyeing operations also specify this pigment where surface uniformity and batch-to-batch consistency are evaluated during supplier qualification. It meets rigorous industrial performance metrics.

Copper monochlorophthalocyanine is supplied as a dry powder, with press cake and dispersed paste forms available for wet-process applications. Standard commercial grades are offered at pigment-grade purity.

Specifications are aligned to industrial colorant standards. Flushed and predispersed variants are available to support direct integration into ink and coating manufacturing lines for efficient production.