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Trisodium phosphate

Trisodium phosphate
Trisodium phosphate structure
Chemical Name:
Trisodium phosphate
Molecular Formula:
Formula Weight:
MOL File:

Trisodium phosphate Properties

Melting point:
2.536 g/cm3(Temp: 17.5 °C)
storage temp. 
Inert atmosphere,Room Temperature
H2O: slightly soluble(lit.)
Water Solubility 
Soluble in water. Insoluble in ethanol and carbon disulfide.
CAS DataBase Reference
7601-54-9(CAS DataBase Reference)
182.1778; 182.6778; 182.8778; 582.1778; 582.5778; 582.6778; 310.545
Substances Added to Food (formerly EAFUS)
EWG's Food Scores
NCI Drug Dictionary
sodium phosphate
EPA Substance Registry System
Trisodium phosphate (7601-54-9)
  • Risk and Safety Statements
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P280a-P304+P340-P405-P501a-P261-P305+P351+P338
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
HazardClass  8
PackingGroup  III
HS Code  28352910
Toxicity LD50 skin in rabbit: > 300mg/kg

Trisodium phosphate price More Price(6)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 342483 Sodium phosphate 96% 7601-54-9 25g $32.2 2021-03-22 Buy
Sigma-Aldrich 342483 Sodium phosphate 96% 7601-54-9 2.5kg $115 2021-03-22 Buy
Alfa Aesar 013438 Sodium phosphate, tribasic, anhydrous tech. 7601-54-9 5kg $134 2021-03-22 Buy
Alfa Aesar 013438 Sodium phosphate, tribasic, anhydrous tech. 7601-54-9 1kg $47.3 2021-03-22 Buy
Sigma-Aldrich 342483 Sodium phosphate 96% 7601-54-9 500g $39 2021-03-22 Buy

Trisodium phosphate Chemical Properties,Uses,Production


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.

Chemical Properties

Trisodium phosphate (anhydrous) is a white, granular or crystalline solid, highly soluble in water and produces a strong alkaline solution. On exposure to heat, trisodium phosphate decomposes and produces toxic and corrosive fumes including phosphorous oxides.
The major use for trisodium phosphate is as a cleaning agent, food additive, stain remover, and degreaser. Trisodium phosphate of commercial grade is often partially hydrated and ranges from anhydrous trisodium phosphate, Na3PO4, to the dodecahydrate, Na3PO4 · 12H2O. Most often found in white powder form, it is also called trisodium orthophosphate or just plain sodium phosphate. Trisodium phosphate reacts violently with water and acids to liberate heat. Trisodium phosphate is corrosive and in the presence of water attacks many metals.
Trisodium phosphate is an approved flux for use in hard soldering joints in medical grade copper plumbing. The flux is applied as a concentrated water solution and dissolves copper oxides at the temperature used in copper brazing. Residues are fully water soluble and can be rinsed out of plumbing before it is put in service. Also, trisodium phosphate is still in vast use for the cleaning, degreasing, and deglossing of walls prior to painting. In fact, application of trisodium phosphate breaks the gloss of oil-based paints and opens the pores of latex-based paint providing a surface better suited for the adhesion of the subsequent layer of paint.

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.


Trisodium phosphate (TSP) is a cleaning agent, lubricant, food additive, stain remover and degreaser. It is an alkaline cleaning agent that has been used as a household cleaner for many years, but ecological problems have largely ended that practice, at least in the western world. Substitutes are not as effective, but the raw chemical can be bought in bulk to add to other detergents. It works by disrupting the bacterial cell membrane and causing the contents to leak out, though the exact mechanism is not fully elucidated (Oyarzabal, 2005). Trisodium phosphate solutions are approved for treatment of beef carcasses in the US Code of Federal Regulations (21 CFR 182.1778; FDA 2003).
By the end of the 20th century, many products that formerly contained TSP were manufactured with TSP substitutes, which consist mainly of sodium carbonate along with various admixtures of nonionic surfactants and a limited percentage of sodium phosphates. TSP is commonly used after cleaning with mineral spirits in order to remove hydrocarbon residues. TSP may be used with household chlorine bleach in the same solution without hazardous reactions. This mixture is particularly good for removing mildew, but is ineffective at permanently removing mold.


sodium phosphate helps maintain product pH.


Trisodium Phosphate is an emulsifier and buffer that is strongly alkaline, with a ph of 12. it is moderately soluble in water, with a solubility of 14 g/100 ml at 25°c. it functions as an emulsifier in processed cheese to improve texture. it maintains viscosity and pre- vents phase separation in evaporated milk and is also found in cereals. it is also termed trisodium orthophosphate, sodium phosphate tribasic, and trisodium monophosphate.


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


Toxic by ingestion, irritant to tissue.

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.

Safety Profile

Moderately toxic by intravenous route. Mutation data reported. A strong, caustic material. When heated to decomposition it emits toxic fumes of Na2O and POx. See also PHOSPHATES.

Trisodium phosphate Preparation Products And Raw materials

Raw materials

Preparation Products

Trisodium phosphate Suppliers

Global( 428)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Nanjing Sky Hope Tongyuan Biological Engineering Co., Ltd.
02569916489 CHINA 257 58
Jiangsu Kolod Food Ingredients Co.,Ltd.
+8618805133257 +86-518-85110578 18805133257
+86-518-85110578 China 126 60
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 22607 55
Shanghai Time Chemicals CO., Ltd.
+8618017249410 +86-021-57951555
+86-021-57951555 CHINA 1365 55
Hefei TNJ Chemical Industry Co.,Ltd.
86-0551-65418684 18949823763
86-0551-65418684 China 3001 55
Shanghai Zheyan Biotech Co., Ltd.
18017610038 CHINA 3623 58
career henan chemical co
+86-371-86658258 CHINA 29960 58
+86 18953170293
+86 0531-67809011 CHINA 2858 58
Hebei Guanlang Biotechnology Co., Ltd.
+8619930503282 China 5460 58
hdzhl biotechnology co., ltd
86-13032617415 CHINA 1275 58

View Lastest Price from Trisodium phosphate manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2021-10-22 Trisodium phosphate
US $10.00 / KG 1KG 99% 10 mt Hebei Guanlang Biotechnology Co., Ltd.
2021-10-14 trisodium phosphate anhydrous
US $400.00 / T 1KG 99.99% 20 tons Hebei Dongdu Import and Export Co. LTD
2021-08-26 Trisodium Phosphate
US $11.00 / Kg/Bag 1g 99% 10000kg Hebei Crovell Biotech Co Ltd

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