RV/Marine Antifreeze, Series RV & Marine -100, Container Type Drum, Container Size 55 gal, Concentration Type Pre-Diluted 50/50, Base Formulation Ethylene Glycol, Color Purple, Freezing Point -100 Degrees F, Boiling Point 365 Degrees F, Biodegradable Biodegradable, Compatible Vehicle Type Boats, Features Made with Renewable Resources and is safe for Incidental Contact with People, Pets and Wildlife, Nontoxic to Aquatic Life, Flash Point 225 Degrees F, Maximum pH Level 7, Net Weight 465 lb