C.I. pigment blue 1

C.I. Pigment Blue 1 (CAS 1325-87-7) is a synthetic triarylmethane pigment registered under EC 215-410-7, also known commercially as Peacock Blue, Cascade Blue, Blue 6390, and Conc. Blue B, with the C.I. number 42595:2. It belongs to the cationic dye-derived pigment class, produced as an insoluble lake form.

In textile and leather dyeing, Pigment Blue 1 deposits onto fibre surfaces through adsorption, delivering a bright greenish-blue hue with strong tinting strength. In printing inks and packaging coatings, it disperses within binder systems to provide consistent colour development across substrates including paper and polymer films, where its surface-wetting behaviour supports uniform pigment distribution.

Pigment Blue 1 is supplied in powder form and is subject to REACH registration requirements within the EU. Procurement should confirm compliance documentation including Safety Data Sheets aligned with Regulation (EC) No 1907/2006. Packaging formats typically follow standard industrial conventions; buyers should request grade specifications directly from the supplier.