1.1 This specification covers synthetic red iron oxide for use in paints and coatings manufactured by any of the following: 1.1.1 Calcination of iron salts. 1.1.2 Precipitation from iron salts. This specification covers synthetic red iron oxide pigment for use in paints and coatings manufactured by any of the following: calcination of iron salts, precipitation from iron salts, calcination of synthetic iron oxide, and product of organic reduct