Elemental bromine is a fuming red-brown liquid at room temperature, corrosive and toxic, with properties between those of chlorine and iodine.he diatomic element Br 2 does not occur naturally. Instead, bromine exists exclusively as bromide salts in diffuse amounts in crustal rock. Owing to leaching, bromide salts have accumulated in sea water at 65 parts per million (ppm), which is less than chloride.
As always, follow proper cooking instructions when preparing any meat to kill any potentially harmful bacteria. As long as you have your refrigerator at a reasonable temperature, your roast beef should be fine through the weekend at least. There's no reason you can't serve it hot if you want. Reheat it with some broth or just slice it and have it cold on a salad or in a sandwich.
1 Ground beef that has been defrosted in the fridge can be kept for an additional 1 to 2 days in the refrigerator before cooking; ground beef that was thawed in the microwave or in cold water should be cooked immediately. How long does raw ground beef last at room temperature? 2  Bacteria grow rapidly at temperatures between 40 Â°F and 140 Â°F; ground beef should be discarded if left for more than 2 hours at room temperature.