Phthalocyanine blue

See Wikipedia for information about Phthalocynine blue:  http://en.wikipedia.org/wiki/Phthalocyanine_Blue_BN.   For more information, see also http://www.handprint.com/HP/WCL/pigmt1d.html#phthalocyanine

Canadian Heritage University of Regina Mackenzie Art Gallery Mendel Art Gallery Sask Learning