Patent ID: 8399396

Claim:
A detergent composition comprising: a) from about 5% to about 90%, by weight of the composition, of a surfactant; b) from about 0.1% to about 50%, by weight of the composition, of an adjunct material, said adjunct material selected from the group consisting of polymers, builders, additional chelating agents, dye transfer inhibiting agents, dispersants, enzyme stabilizers, catalytic materials, bleach activators, polymeric dispersing agents, clay soil removal/anti-redeposition agents, brighteners, suds suppressors, dyes, additional perfume and perfume delivery systems, structure elasticizing agents, fabric softeners, carriers, hydrotropes, processing aids, pigments, and mixtures thereof; c) Tiron (1,2-dihydroxybenzene-3,5-disulfonic acid); d) at least one calcium salt; and e) a ligand capable of chelating to ferric iron, wherein the ligand is selected from the group consisting of DTPA, DTPMP, and mixtures thereof, has a binding constant for ferric iron of at least 10 21 mol −1 , and wherein when the ligand complexes with ferric iron, a ferric iron/ligand complex forms that does not have a red color; and wherein the detergent composition has a molar ratio of ligand to Ca 2+ from the calcium salt ranging from about 1.05:1 to about 1.8:1.