A composition comprising a particulate solid, a non-polar organic liquid having a dielectric constant of less than 5 and a dispersing agent of the formula [R-X] m -Q wherein R is i) a C 20-200 hydrocarbylene chain linked to a terminal hydroxyl or amine group that reacts to form X, or ii) a 300 to 3000 g/mole monosubstituted polyether chain obtained from poly(C 3-16 -alkylene oxide) with a connecting group of 1 to 15 atoms to link to a terminal hydroxyl or amine group that reacts to form X where the alkylene oxide may be a mixture of C 3-16 alkylene oxide and wherein said polyether chain optionally includes up to 5 wt.%, based on the weight of the poly(alkylene oxide), of repeat units from ethylene oxide, or iii) a combination of i) and ii) when m is greater than 1; or iv) a C 1-19 optionally substituted hydrocarbylene with heteroatoms, such as O and N, linked to a hydroxyl or amine that reacts with a carbonyl of Q to form X with a combination of i) or ii) or mixtures thereof, when m is greater than 1; m is 1-3, preferably 1 or 2; X is O, NG, N or mixtures thereof; G is H or an optionally substituted C 1-36 hydrocarbylene group, or is the residue of a Michael addition of an optionally substituted alkyl (meth)acrylate or (meth)acrylamide with X when it is an amine; and Q is derived from a compound of 2 to 24 carbon atoms containing at least 2 or more carboxylic acids or derivatives thereof, such as 1 or more anhydride groups, where the linkage between X and Q is represented by an ester, amide or imide group from coupling the compound of Q through ester, amide or imide forming reactions with X, and Q contains at least one residual, free acidic carboxyl group and can optionally contain heteroatoms, such as O and N, and halogens such as Cl and Br or mixtures thereof, and wherein the particulate solid is a mixed metal oxide pigment that develops its color intensity and hue after firing at elevated temperatures. wherein R is i) a C 20-200 hydrocarbylene chain linked to a terminal hydroxyl or amine group that reacts to form X, or ii) a 300 to 3000 g/mole monosubstituted polyether chain obtained from poly(C 3-16 -alkylene oxide) with a connecting group of 1 to 15 atoms to link to a terminal hydroxyl or amine group that reacts to form X where the alkylene oxide may be a mixture of C 3-16 alkylene oxide and wherein said polyether chain optionally includes up to 5 wt.%, based on the weight of the poly(alkylene oxide), of repeat units from ethylene oxide, or iii) a combination of i) and ii) when m is greater than 1; or iv) a C 1-19 optionally substituted hydrocarbylene with heteroatoms, such as O and N, linked to a hydroxyl or amine that reacts with a carbonyl of Q to form X with a combination of i) or ii) or mixtures thereof, when m is greater than 1; i) a C 20-200 hydrocarbylene chain linked to a terminal hydroxyl or amine group that reacts to form X, or ii) a 300 to 3000 g/mole monosubstituted polyether chain obtained from poly(C 3-16 -alkylene oxide) with a connecting group of 1 to 15 atoms to link to a terminal hydroxyl or amine group that reacts to form X where the alkylene oxide may be a mixture of C 3-16 alkylene oxide and wherein said polyether chain optionally includes up to 5 wt.%, based on the weight of the poly(alkylene oxide), of repeat units from ethylene oxide, or iii) a combination of i) and ii) when m is greater than 1; or iv) a C 1-19 optionally substituted hydrocarbylene with heteroatoms, such as O and N, linked to a hydroxyl or amine that reacts with a carbonyl of Q to form X with a combination of i) or ii) or mixtures thereof, when m is greater than 1; m is 1-3, preferably 1 or 2; X is O, NG, N or mixtures thereof; G is H or an optionally substituted C 1-36 hydrocarbylene group, or is the residue of a Michael addition of an optionally substituted alkyl (meth)acrylate or (meth)acrylamide with X when it is an amine; and Q is derived from a compound of 2 to 24 carbon atoms containing at least 2 or more carboxylic acids or derivatives thereof, such as 1 or more anhydride groups, where the linkage between X and Q is represented by an ester, amide or imide group from coupling the compound of Q through ester, amide or imide forming reactions with X, and Q contains at least one residual, free acidic carboxyl group and can optionally contain heteroatoms, such as O and N, and halogens such as Cl and Br or mixtures thereof, and wherein the particulate solid is a mixed metal oxide pigment that develops its color intensity and hue after firing at elevated temperatures.