PHOSPHORUS (WHITE OR YELLOW)
White or yellow phosphorus is a flammable, toxic, corrosive, wax-like, transparent, nonmetallic solid with a disagreeable odor similar to garlic; it will spontaneously ignite in air as it approaches its autoignition temperature. For this reason the product is kept in a vacuum, in an atmosphere of inert gas, or under water to keep it from igniting. Among its synonyms are element phosphorus, phosphorus, WP, white phosphorus, and yellow phosphorus.
它的比重是1.82,一个原子ight of 31 It has an autoignition temperature of 86°F, melts at 1 1 1.4°F, boils at 536°F, and is not soluble in water. Its CAS (Chemical Abstract Services) number is 7723-14-0; its STCC (Standard Transportation Commodity Code) number is 4916140 (white or yellow, dry) and 191614 1 (white or yellow, in water); its I N/NA (United Nations/North America) designation is 1381 (dry or under water or in solution) and 2447 (molten liquid); its CHRIS (Chemical Hazard Response Information System) designation is PPW; its NFPA (National Fire Protection Association) 704 Rating is 3-3-1; its RTECS (Registry of Toxic Fffects of Chemical Substances) designation is TH3500000 (dry) and TH3505000 (in water); its DOT (U.S. Department of Transportation) classification is flammable solid; and its IMO (International Maritime Organization) designation is flammable solid, 4.2. Its atomic symbol is P.
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