Trisodium phosphate Basic information

Product Name: Trisodium phosphate

Synonyms: TSPA;TSPC;TRI-SODIUM ORTHOPHOSPHATE;antisal4;dri-tri;emulsiphos440/660;nutrifosstp;oakite

CAS: 7601-54-9

MF: Na3O4P

MW: 163.94

EINECS: 231-509-8

Product Categories: Inorganics;metal phosphate compound;Food Additives

Mol File: 7601-54-9.mol

Trisodium phosphate Structure

Trisodium phosphate Chemical Properties

storage temp. -20°C

solubility H2O: slightly soluble(lit.)

form Powder

color White

Water Solubility Soluble in water. Insoluble in ethanol and carbon disulfide.

Sensitive Hygroscopic

Merck 14,8662

CAS DataBase Reference 7601-54-9(CAS DataBase Reference)

EPA Substance Registry System Phosphoric acid, trisodium salt(7601-54-9)

Safety Information

Hazard Codes C,Xi

Risk Statements 34-36/37/38

Safety Statements 26-36/37/39-45-24/25

RIDADR UN 3262 8/PG 3

WGK Germany 1

RTECS TC9490000

F 34

TSCA Yes

Hazardous Substances Data 7601-54-9(Hazardous Substances Data)

MSDS Information

Provider Language

Sodium phosphate English

SigmaAldrich English

ALFA English

Trisodium phosphate Usage And Synthesis

Chemical 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.

Preparation Trisodium phosphate may be prepared in two steps, first by adding a little excess of sodium carbonate to phosphoric acid and then boiling the solution to expel carbon dioxide. Sodium hydroxide is then added to the solution:

Na2CO3+ H3PO4→Na2HPO4+ CO2+ H2O

Na2HPO4+ NaOH →Na3PO4+ H2O

Alternatively, trisodium phosphate may be prepared by complete neutralization of phosphoric acid with sodium hydroxide, followed by evaporation and crystallization:

H3PO4+ 3NaOH →Na3PO4+ 3H2O

Description Trisodium phosphate (TSP) 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.

Trisodium phosphate Preparation Products And Raw materials

Preparation Products Chorionic gonadotrophin-->Ethylenebis(nitrilodimethylene)tetraphosphonic acid-->potassium ω-hydroperfluroheptylate-->triethylene tetraamine hexamethylene phosphoric acid-->polyferric phophat sulfate-->industrial wool-scouring powder-->PERLITE BEADS GRADE 5-->FERRIC PHOSPHATE TETRAHYDRATE-->HEXOKINASE

Raw materials Sodium fluorosilicate-->Sodium dihydrogenorthophosphate-->phosphoric acid by wet process