In particular, a billion is 10 9 = 1 000 000 000 in the American system and 10 12 = 1 000 000 000 000 in the European system. For 10 9, Europeans say thousand million or milliard.. Although we describe the two systems today as American or European, both systems are actually of French origin.
Definition of warfarin. : a crystalline anticoagulant coumarin derivative C19H16O4 that inhibits the production of prothrombin by vitamin K and is used as a rodent poison and in medicine; also : its sodium salt C19H15NaO4 used especially in the prevention or treatment of thromboembolic disease.
Warfarin is listed on the discarded chemicals list (Chapter 173-303-9903 WAC). When a product with warfarin as the sole-active ingredient is discarded or not used for its intended purpose, it is a RCRA hazardous waste. Warfarin is the only compound that has a different RCRA listed designation, based on concentration. 1  If the warfarin concentration is more than 0.3%, it is considered an acutely hazardous waste with a code of P001. 2  If the warfarin concentration is less than or equal to 0.3%, it is a dangerous waste with a code of U248.