Pigment Red 81

Pigment Red 81 (CAS 68310-07-6), also supplied as Pigment Red 81:3, is a rhodamine-based fluorescent organic pigment used to produce vivid, high-chroma red and pink colorations across a range of industrial substrates.

Its fluorescent character delivers brightness levels that conventional non-fluorescent pigments cannot match, making it a preferred choice where visual impact is a primary specification requirement.

In printing and packaging, it is used in offset, gravure, and flexographic inks where intense pink-to-red hues are required for labels, folding cartons, and promotional materials.

Textile and paper manufacturers apply it to achieve fluorescent effects in specialty coated papers, cardstock, and dyed fabrics where daylight fluorescence is a defined end-product requirement.

In plastics and polymer systems, it is incorporated into masterbatches for consumer goods, toys, and packaging films requiring bright red or magenta shading for the consumer market.

Coatings formulators use it in solvent-based and UV-curable systems for decorative and industrial surface applications. It provides excellent dispersibility and color strength in these specialized systems.

Pigment Red 81 is supplied as a fine dry powder, typically in press cake or flushed paste form for ink manufacturing. It is available in technical and commercial ink grades for various uses.

Particle size and dispersibility specifications vary by application. Packaging is commonly offered in fiber drums or multi-wall bags for bulk procurement and long-term storage in industrial facilities.