Gordon's Big N’ Tuf Weed and Grass Killer, 1 qt, Liquid, Slight Detergent-Like, Yellow, Compositions: Glycine, N-(phosphonomethyl)-, Compound with 2-propanamine (1:1), Flash Point: 133 deg F, Flammability Rating: 1, Density: 9.14 lb/gal, Specific Gravity: 1.096, pH Range: 7.5