Weld-On 781™ Low VOC Medium-Bodied Fast-Setting Professional Plumbing Grade PVC Solvent Cement, 1 gal, Can with Screw-on Cap, For Use With: 6 Inch PVC, 4 Inch Schedule 80 PVC Plastic Pipe, Liquid, Gray, Odor/Scent: Ketone, VOC Content: <=510 gm/L, Flash Point: -20 deg C, Composition: Tetrahydrofuran 10 - 30%, Methyl Ethyl Ketone 20 - 40%, Cyclohexanone 15 - 35%, Acetone 5 - 15%, Specific Gravity: 0.92, Temperature Rating: <44 deg C (Storage), Shelf Life: 3-Years, Boiling Point: 56 deg C, Melting Point: -108.5 deg C, Viscosity: 500 cP, Solubility: Solvent Portion Soluble in Water, Resin Portion Separates Out, Vapor Pressure: 190 mm Hg at 20 deg C, Vapor Density: >2, Evaporation Rate: >1, Flammability Rating: 1.1 - 12.8%