phthalocyaninen.
/ˌ(f)θalə(ʊ)ˈsʌɪəniːn/, U.S. /ˌθæləˈsaɪəˌnin/ Chemistry. A greenish-blue porphyrin, C32H18N8, containing four bicyclic groups (C6H4C2N) joined by nitrogen atoms; any of its substituted derivatives. Also: any of the metal chelate complexes of these, which form a large and important class of pigments and dyes ranging in colour from green to blue.
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the world > matter > chemistry > organic chemistry > organic dyes > [noun] > colouring green
Scheele's green1819
phthalocyanine1933
phthalocyanine green1942
phthalo1979
1933 R. P. Linstead in Rep. Brit. Assoc. Advancem. Sci. 465 When phthalimide is heated with certain metals,..in a current of ammonia, a complex reaction occurs with the formation of highly coloured substances of a novel type. These have been named phthalocyanines from their origin and deep-blue colour... The metal may be eliminated from the magnesium compound..to yield phthalocyanine, the parent substance of the group.
1961 S. R. Cockett & K. A. Hilton Dyeing of Cellulosic Fibres v. 207 Copper phthalocyanine is the important pigment Monastral Blue BS, the lead compound being Monastral Green.
1972 P. Rys & H. Zollinger Fund. Chem. & Applic. Dyes vii. 97 Because of their good fastness properties phthalocyanines are suitable for almost all processes in which pigments are used.
1992 Economist 21 Nov. 152/1 The more complicated molecules of biochemistry were just beginning to come under its gaze, but the largest then analysed was a dye called phthalocyanine, which contains 58 atoms.
Compounds
phthalocyanine blue n. (also with capital initials) a blue pigment, copper phthalocyanine.
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the world > matter > chemistry > organic chemistry > organic dyes > [noun] > colouring blue
indophane1875
induline1882
indoaniline1886
indogen1886
indanthrone1920
phthalocyanine blue1947
phthalo1967
1947 L. S. Pratt Chem. & Physics Org. Pigments ii. 8 Other pigments which also contributed to this change were..very recently the benzidine yellows and phthalocyanine blues and greens.
1967 V. Strauss Printing Industry ix. 592/2 The development of phthalocyanine blue, perhaps better known under its duPont trade-mark as Monastral blue, was one of the greatest achievements in the field of pigments.
1972 Materials & Technol. V. xi. 359 Phthalocyanine blues are intense blues which are not used in full colour because bronzing develops... Two forms are used, beta phthalocyanine blue of relatively green shade,..and the less stable alpha phthalocyanine blue, of a redder shade.
1991 Artist Nov. 16/2 Phthalocyanine blue... This is a very strong pigment, extremely transparent, lightfast and has a slight green undertone.
phthalocyanine green n. (also with capital initials) any of several green pigments that are chlorinated (or partly brominated) derivatives of copper phthalocyanine.
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the world > matter > chemistry > organic chemistry > organic dyes > [noun] > colouring green
Scheele's green1819
phthalocyanine1933
phthalocyanine green1942
phthalo1979
1942 E. R. Allen in J. J. Mattiello Protective & Decorative Coatings II. viii. 261 Likewise phthalocyanine green shows a somewhat similar relationship to orthodox pigments.
1968 Kirk-Othmer Encycl. Chem. Technol. (ed. 2) XV. 491 Phthalocyanine green (Pigment Green 7, CI 74260) is a polychlorinated copper phthalocyanine containing about fourteen atoms of chlorine. The most usual shade is the G type although there are several shades in the G range, representing slight variations in degree of chlorination or particle size and shape.
1984 Artist Sept. 32/3 Phthalocyanine green..often occurs in mixed greens.
2003 Amer. Artist (Nexis) 1 Mar. 58 Nearest the sun (on a blue-sky day) I use a mixture of phthalocyanine green plus white.
This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).
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n.1933