Phosphorus, Elemental

CAS RN: 7723-14-0

Major Uses

The active ingredient is no longer contained in any registered pesticide products ... "cancelled."
For phosphorus (USEPA/OPP Pesticide Code: 66502) there are 0 labels match. /SRP: Not registered for current use in the U.S., but approved pesticide uses may change periodically and so federal, state and local authorities must be consulted for currently approved uses./
White phosphorus has been used as insecticide in pastes made by grinding yellow phosphorus in presence of water and mixing with flour. Phosphorus paste was used to control American cockroach, also as rat poison.
Most (85%) of the elemental phosphorus is converted to phosphoric acid which is used directly or converted to phosphate compounds. Final applications include home laundry and automatic dishwasher detergents, industrial and institutional cleaners, food and beverages, metal cleaning and treatment, potable water and wastewater treatment, antifreeze and electronics. The remaining elemental phosphorus (15%) is used in P4-dependent applications which require the element as a direct reactant (P2S5, PCl3, POCl3, P2O5, and hypophosphite with smaller amounts leading to PH3, red phosphorus, phosphonates and other derivatives). Final applications include flame retardants, lubricant additives, insecticides, herbicides, water treatment, cleaning compounds, plasticizers, semiconductors, and surfactants.
Striking surfaces for matches, fireworks, flame retardants in polymers, semiconductors, and PH3. /Red phosphorus/
Manufacture of rat poisons; for smoke screens, gas analysis. /White phosphorus/
Pyrotechnics; manufacture of safety matches; in organic synthesis; manufacture of phosphoric acid, phosphine, phosphoric anhydride, phosphorus pentachloride, phosphorus trichloride; manufacture of fertilizers, pesticides, incendiary shells, smoke bombs, tracer bullets. /Red phosphorus/
The other commonly available form of elemental phosphorus, red phosphorus, is the only form of phosphorus still used in matches today... .
In military use, white phosphorus is used as an ammunition for mortar and artillery shells and hand and rifle grenades.
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