Corn Starch, in 25 kg bags, is white with a slight yellow tint, with a 2-year shelf life. It contains 14.0% water, 99% purity, 0.7% spots, 0.15% ash, 90 branched chains, 87 whiteness units, and 30 ppm sulfur dioxide. It's (C6H10O5)n, used widely in food, pharmaceuticals, and paper for its neutral odor and absorbent qualities.