Abstract: A temperature-stable inorganic yellow pigment of the composition Fe.sub.2 TiO.sub.5 .multidot. x TiO.sub.2, where x is from 0 to about 15, with a particle diameter of less than about 1 micron is produced by forming an aqueous suspension of at least one finely divided iron compound selected from the group consisting of iron oxide, iron oxide hydroxide, iron hydroxide and iron carbonate and at least one finely divided titanium compound selected from the group consisting of titanium dioxide and titanium dioxide oxide hydrate, the iron and titanium compounds being present in accordance with the stoichiometric composition Fe.sub.2 TiO.sub.5 .multidot. x TiO.sub.2 where x is from 0 to about 15, removing the aqueous phase from the mixed suspension, and calcining the residue at a temperature from about 600.degree. C to 1100.degree. C.

Abstract: An Fe.sub.3 O.sub.4 iron oxide black pigment having incorporated therein up to about 50 mole percent of .gamma.-Fe.sub.2 O.sub.3 plus Me Fe.sub.2 O.sub.4 (wherein Me is at least one of magnesium, manganese, cobalt, nickel, aluminum, chromium, titanium, copper, zinc and cadmium) having a specific surface according to BET of greater than about 12 m.sup.2 /g, up to about 10% by weight of a substantially insoluble inorganic compound as coating and a stability to oxidation with air under standardized conditions of greater than about 130.degree. C. Advantageously the coating comprises at least one of zinc hydroxide, zinc phosphate, zinc phosphite, aluminum phosphate and silica, being precipitated onto the suspended pigment from a solution. The resulting pigments are of improved resistance to oxidation, rendering them especially useful for pigmenting inorganic and organic dispersions and for use on magnetogram supports.