chapter 10

Colorants: Organic and Inorganic Pigments

Peter A. Lewis    Sun Chemical Corp. Colors Group Cincinnati, OH 45232 USA

10.1 Introduction

Before entering into any discussion relating to pigments it is first necessary to clearly define what is meant by a pigment as opposed to a dyestuff (or dye) since in many earlier texts on color the terms “pigment” and “dyestuff” are used almost interchangeably.

A definition of a pigment has been proposed by the Color Pigments Manufacturers Association (CPMA), formerly known as the Dry Color Manufacturers Association (DCMA) in response to a request from the Toxic Substances Interagency Testing Committee. This definition was developed specifically to enable differentiation between a dyestuff and a pigment ...

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