Phthalocyanine Blue (PB15) CAS 147-14-8

What Phthalocyanine Blue PB15 Is

Phthalocyanine blue is the copper complex of phthalocyanine, a deep blue powder that stays insoluble in water and nearly all solvents, so it works as a pigment dispersed in a binder rather than a dye that dissolves and stains. The chemistry is best known for its crystal forms. Alpha crystal gives a bright red shade blue with high tinting strength, beta crystal gives a greener, more solvent and heat stable blue, and epsilon gives the strongest red shade, and the commercial PB15:0 through PB15:6 grades mark these forms and their stabilization and flocculation treatments. UATChem supplies untreated and rosin, resin or derivative treated lots, in powder, low-dust granule and press cake form, matched to water, solvent or plastic systems.

Coatings, Inks, Plastics and More

• Coatings and paints. Used in industrial, automotive, powder and architectural coatings where light and weather fastness keep the blue from fading outdoors.
• Printing inks. Used in offset, gravure, flexo and inkjet inks at high tinting strength, with transparent or hiding grades for different print effects.
• Plastics and masterbatch. Colors PVC, PE, PP, PS and engineering plastics and masterbatch, where beta crystal grades resist crystal change and tolerate processing heat.
• Other uses. Also used in rubber, textile pigment printing pastes, leather, stationery, crayons and cement or building material coloring.

Typical Specifications

Pigments are released on shade, tinting strength, dispersion, oil absorption and fastness rather than an assay, so exact values follow the grade and the COA or technical data sheet; the table shows typical phthalocyanine blue properties.

Packaging, Documents and Ordering

• Packed in 25 kg paper bags or fiber drums with liner on pallets; low-dust granule suits automated dosing and press cake feeds water or solvent pigment preparations, and material is kept dry and dust free as ordinary, non-hazardous cargo.
• The dust may irritate the eyes and respiratory tract, so a dust mask and ventilation are used during handling, and the low-toxicity, water-insoluble powder is kept out of drains and waterways. Every lot carries a COA with shade, tinting strength, oil absorption, moisture and sieve residue, together with SDS and TDS, and shade cards and samples are supported.
• Selection starts with crystal form and shade (red shade alpha or green shade beta), the system (water, solvent or plastic) and the physical form. For a quote, send the grade or target shade, form, quantity, packing and destination port.

FAQ

Q: What is the difference between alpha and beta phthalocyanine blue?

A: Alpha (PB15:1, 15:2) gives a bright red shade blue, while beta (PB15:3, 15:4) gives a greener, solvent and heat stable blue.

Q: Is phthalocyanine blue a pigment or a dye?

A: It is an insoluble pigment that colors via dispersion in a binder, unlike a dye that dissolves and stains the substrate.

Q: Which phthalocyanine blue grade suits plastics and masterbatch?

A: Beta grades such as PB15:3 and PB15:4 suit plastics because they resist crystal change and tolerate processing temperatures.