Hazard
Toxic by ingestion, irritant to tissue.
Description
Trisodium phosphate (TSP,7601-54-9) is an inorganic salt used as industrial detergents, metal treatment and in toilet floor cleaners. TSP is pure cleaning power. Used as a water softener; for the treatment of boiler water; as a paint remover; in photographic developers; for tanning leather; for manufacturing paper; for clarifying sugar.
Also, it is a common laboratory reagent. Use to dissolve dirt, grease, and mildew from siding, decks, masonry, boats, campers. To prepare surfaces before painting or staining wash with TSP. Trisodium phosphate is an approved food additive in the U.S., European Union and other countries of the world. It may be added to foods and beverages or smoothies and green drinks. The primary function of trisodium phosphate is acidity regulation. It is commonly present in dry, extruded cereals. Together with other phosphates, it modifies cereal color, aids the cereal's flow through the extruder and provides phosphorus fortification. It is also commonly present in cheese sauces as an emulsifier. Trisodium phosphate is a strong chemical and can cause severe eye damage and can burn unprotected skin. Poisoning occurs if you swallow, breathe in, or spill large amounts of this substance on your skin.
Physical properties
The dodecahydrate is a white or colorless hexagonal crystal; density 1.62 g/cm3; melts around 75°C on rapid heating; partially loses water of crystallization at 100°C; retains the last water molecule even at moderate ignition; soluble in water, about 28 g/100 mL at 20°C; the solution is strongly alkaline; the pH of a 0.1M solution 11.5; insoluble in alcohol.
Definition
ChEBI: Trisodium phosphate is a sodium phosphate.
General Description
Sodium phosphate is a colorless to white crystalline powder or granules. It is prepared by neutralization of phosphoric acid under controlled conditions with sodium hydroxide or sodium carbonate .
Flammability and Explosibility
Nonflammable(100%)
Industrial uses
Different salts of phosphoric and polyphosphoric acids are used in flotation. From this
fairly large family of reagents, sodium phosphate is the preferred species.
Trisodium phosphate is a white, crystalline substance highly soluble
in water. Neutralizing phosphoric acid with soda ash produces trisodium phosphate.
Mono- and disodium
phosphates are rarely used.
Mechanism of action
TSP is a tribasic orthophosphate with a pH of 10.0–12.0 in aqueous solution,
and overall alkalinity aids in its interaction with cell membrane lipids, resulting
in membrane leakage . TSP may also increase
the sensitivity of some microorganisms to nisin and lysozyme.
