It is highly valued for its superior properties such as light fastness, tinting strength, covering power and resistance to the effects of alkalis and acids.

However, recents trends show a reverse tendency for the baking process mainly on the grounds of economical and ecological concerns (solvent-free, shorter lead time).

Areas of interest are the oxygen reduction reaction and the sweetening of gas streams by removal of hydrogen sulfide.

[citation needed] Due to its stability, phthalo blue is also used in inks, coatings, and many plastics.

It is present in a wide variety of products,[22] such as color deposition hair conditioner,[23] gel ink pens, eye patches, parfum, shampoo, skin-care products, soap, sunscreen, tattoo ink,[24] toothpaste,[25] and even turf colorants.

It is potentially suited for organic solar cells because of its high chemical stability and uniform growth.

One of the most common donor/acceptor architectures is CuPc/C60 (buckminsterfullerene) which rapidly became a model system for the study of small organic molecules.

[31] Copper Phthalocyanine (CuPc) has been suggested for data storage in quantum computing, due to the length of time its electrons can remain in superposition.

[32] CuPc can be easily processed into a thin film for use in device fabrication, which makes it an attractive qubit candidate.

[34] Copper phthalocyanine dyes are produced by introducing solubilizing groups, such as one or more sulfonic acid functions.

1,3-Diiminoisoindolene, the intermediate formed during phthalocyanine manufacture, used in combination with a copper salt affords the dye GK 161.

The substance is practically insoluble in water (< 0.1 g/100 ml at 20 °C (68 °F)),[36] but soluble in concentrated sulfuric acid.

[17] Sulfonated phthalocyanine has been found to cause neuroanatomical defects in developing chicken embryos when injected directly into incubating eggs.