Spinelli, Frank R.
Technical consultant for Cabot Corporation, Billerica, MA
Pages: 11 Published: Jan 2012
BLACK PIGMENTS FALL INTO THREE CLASSES  as described in Table 1. The first two classes derive their color characteristics from the element carbon, the third class from ferrous oxide, Fe3O4. Class 1 blacks are carbon blacks that are composed of 90 % or more elemental carbon. Class 2 blacks may be referred to as “carbonaceous pigments” and these contain from 8 % to 88 % elemental carbon.
Paper ID: MNL12200M