4.5 hr total burn time. The Multi-Purpose Canned Heat!: Safe and easy to use - Burns clean, odor free; environmentally preferred, biodegradable; features Smart Can Heat Indicator. Can is safe to handle when dot is blue = Blue dot turns white when can is too hot to touch. Concentrated Formula: New formula, new can. Same great performance. Certified UL Validated. Product meets the chemical and particle emission requirements for chafing fuels for residential and commercial use (UL 2997) UL.com/ecv. www.SternoProducts.com. 24-Hour Emergency Contact: 800-255-3924. Sustainable & biodegradable. Environmentally preferred, biodegradable. Concentrated Formula: Smaller carbon footprint. USDA Certified Biobased Product: Product 98%. Made in USA.