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phthalocyanine

[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.
Origin
1930-1935
1930-35; (na)phthal(ene) + -o- + cyanine
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for phthalocyanine
  • phthalocyanine dye cdrs are usually silver, gold or light green.
  • Similarly, a gold reflective layer does not guarantee use of phthalocyanine dye.
British Dictionary definitions for phthalocyanine

phthalocyanine

/ˌθæləʊˈsaɪəˌniːn; ˌθeɪ-; ˌfθæl-/
noun
1.
a cyclic blue-green organic pigment. Formula: (C6H4C2N)4N4H4
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
Word Origin
C20: from phthal- (see phthalein) + cyanine
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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phthalocyanine in Medicine

phthalocyanine phthal·o·cy·a·nine (thāl'ō-sī'ə-nēn')
n.
Any of several stable, light-fast, blue or green organic pigments used in enamels and plastics.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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