Organic pigments are traditionally used in the mass colouration of pla
stics and synthetic fibres, and in surface coatings such as paints and
inks, More recently, they have also found increasing use in a number
of high technology industries, Commercial pigments must satisfy many p
erformance criteria, which in turn are determined by their molecular,
solid state and particle surface characteristics. This review highligh
ts some of the important aspects of organic pigments which are of impo
rtance to both producers and users.