phthalocyanine

American  

[thal-uh-sahy-uh-neen, -nin, fthal-] / ˌθæl əˈsaɪ əˌnin, -nɪn, ˌfθæl- /

noun

Chemistry.

1. Also called metal-free phthalocyanine.  a blue-green pigment, C 3 2 H 1 8 N 8 , derived from phthalic anhydride.

2. any of the group of blue or green pigments produced by the interaction of metal-free phthalocyanine and a metal, especially copper: used chiefly in the manufacture of enamels, printing inks, and automotive finishes.

---

phthalocyanine British  

/ ˌfθæl-, ˌθæləʊˈsaɪəˌniːn, ˌθeɪ- /

noun

1. a cyclic blue-green organic pigment. Formula: (C 6 H 4 C 2 N) 4 N 4 H 4

2. any of a class of compounds derived by coordination of this compound with a metal atom. They are blue or green pigments used in printing inks, plastics, and enamels

---

Etymology

Origin of phthalocyanine

First recorded in 1930–35; (na)phthal(ene) + -o- + cyanine

Example Sentences

In Saint Jerome, similarly, Martin found phthalocyanine green, a pigment first synthesised four centuries after Parmigianino died.

From The Guardian • Jun. 15, 2018

He demonstrated with a sample of phthalocyanine blue, a synthetic pigment he picked out of a box that held paint cakes of different colours.

From The Guardian • Jun. 15, 2018