TETRASODIUM PYROPHOSPHATE (ANHYDROUS)

Sodium pyrophosphate, also called Tetrasodium pyrophosphate (anhydrous) or TSPP is used in the laboratory as a buffering agent. 
Tetrasodium pyrophosphate (anhydrous) has been shown to be useful in the preparation of an EDTA-sodium pyrophosphate extraction buffer for microcystin analysis of soil samples. 
Tetrasodium pyrophosphate (anhydrous) is an odorless, white powder or granules. 

CAS:    7722-88-5
MF:    Na4O7P2
MW:    265.902402
EINECS:    231-767-1

Tetrasodium pyrophosphate (anhydrous) is used in water softener, buffering agent, thickening agent, dispersing agent, wool de-fatting agent, metal cleaner, soap and synthetic detergent builder, general sequestering agent, in electrodeposition of metals. 
Tetrasodium pyrophosphate (anhydrous) also acts as a tartar control agent in toothpaste and dental floss. 
In addition, Tetrasodium pyrophosphate (anhydrous) is used as a chelating agent in antimicrobial studies. 
Tetrasodium pyrophosphate (anhydrous) is also used as a food additive in common foods such as chicken nuggets, crab meat and canned tuna.
Tetrasodium pyrophosphate (anhydrous) is an inorganic sodium salt comprised of a diphosphate(4-) anion and four sodium(1+) cations. 
More commonly known as Tetrasodium pyrophosphate (anhydrous), it finds much use in the food industry as an emulsifier and in dental hygiene as a calcium-chelating salt. 
Tetrasodium pyrophosphate (anhydrous) has a role as a food emulsifier, a chelator and a food thickening agent. 
Tetrasodium pyrophosphate (anhydrous) contains a diphosphate(4-).

Odorless, white powder or granules. 
Mp: 995°C. Density: 2.53 g cm-3. 
Solubility in water: 3.16 g / 100 mL (cold water); 40.26 g / 100 mL boiling water. 
Tetrasodium pyrophosphate (anhydrous) used as a wool de-fatting agent, in bleaching operations, as a food additive. 
The related substance Tetrasodium pyrophosphate (anhydrous) occurs as colorless transparent crystals. 
Loses Tetrasodium pyrophosphate (anhydrous)'s water when heated to 93.8°C.

Tetrasodium pyrophosphate (anhydrous), also called sodium pyrophosphate, tetrasodium phosphate or TSPP, is an inorganic compound with the formula Na4P2O7. 
As a salt, Tetrasodium pyrophosphate (anhydrous) is a white, water-soluble solid. 
Tetrasodium pyrophosphate (anhydrous) is composed of pyrophosphate anion and sodium ions. 
Toxicity is approximately twice that of table salt when ingested orally.
Also known is the decahydrate Na4P2O7·10(H2O).

Tetrasodium pyrophosphate (anhydrous) is used in water softener, detergent, emulsifying agent, metal cleaner and nutritional supplement. 
Tetrasodium pyrophosphate (anhydrous) acts as a buffering agent, thickening agent and dispersing agent. 
Tetrasodium pyrophosphate (anhydrous) also acts as a tartar control agent in toothpaste and dental floss. 
In addition, Tetrasodium pyrophosphate (anhydrous) is used as a chelating agent in antimicrobial studies.
Tetrasodium pyrophosphate (anhydrous) is also used as a food additive in common foods such as chicken nuggets, crab meat and canned tuna.

Tetrasodium pyrophosphate (anhydrous) is an anhydrous, white, crystalline material in powder form. 
Tetrasodium pyrophosphate (anhydrous) is used as a dispersing agent, sequestrant, buffering agent, protein modifier, and coagulant.
Tetrasodium pyrophosphate (anhydrous) is used to modify the proteins enabling them to retain moisture during storage, thawing, and cooking.
Tetrasodium pyrophosphate (anhydrous) also increases shelf life of the product by sequestering multivalent cations responsible for lipid oxidation and rancidity development. 

Tetrasodium pyrophosphate (anhydrous) is added to improve whipping efficiency and improve foam stability. 
Tetrasodium pyrophosphate (anhydrous) helps to buffer the pH of the processed cheese and interacts with milk proteins to promote emulsification. 
Tetrasodium pyrophosphate (anhydrous) sequesters iron in potato products to prevent after-cooking blackening and to stabilize color. 
To maintain fat dispersion in an ice cream/dessert mix, Tetrasodium pyrophosphate (anhydrous) may be added so "churning" will not form lumps of butter during freezing.

Tetrasodium pyrophosphate (anhydrous) Chemical Properties
Melting point: 80 °C
Boiling point: 93.8 °C
Density: 2.53 g/mL at 25 °C(lit.)
Vapor pressure: 0Pa at 20℃
Storage temp.: Inert atmosphere,Room Temperature
Solubility: H2O: 0.1 M at 20 °C, clear, colorless
Form: Granular
Color: White
Specific Gravity: 2.534
Odor: Odorless
PH Range: 10.3
Water Solubility: Soluble in water. Insoluble in ethyl alcohol.
Sensitive: Hygroscopic
Merck: 14,9240
Exposure limits: NIOSH: TWA 5 mg/m3
Stability: Stable. Incompatible with strong oxidizing agents.
InChIKey: FQENQNTWSFEDLI-UHFFFAOYSA-J
CAS DataBase Reference: 7722-88-5(CAS DataBase Reference)
EPA Substance Registry System: Tetrasodium pyrophosphate (anhydrous) (7722-88-5)

Tetrasodium pyrophosphate (anhydrous) is a white crystalline powder or colourless crystals with the formula Na4P2O7. 
Tetrasodium pyrophosphate (anhydrous) contains the pyrophosphate ion and sodium cation. 
Toxicity is approximately twice that of table salt when ingested orally. 
There is also a hydrated form, Na4P2O7.10H2O.
Tetrasodium pyrophosphate (anhydrous) is used as a buffering agent, an emulsifier, a dispersing agent, and a thickening agent, and is often used as a food additive. 
Tetrasodium pyrophosphate (anhydrous) is widely used as an emulsifying salt (ES) in process cheese. 
Common foods containing Tetrasodium pyrophosphate (anhydrous) include chicken nuggets, marshmallows, pudding, crab meat, imitation crab, canned tuna, and soy-based meat alternatives and cat foods and cat treats where it is used as a palatability enhancer. 
Tetrasodium pyrophosphate (anhydrous) is the active ingredient in Bakewell, the substitute for baking powder's acid component marketed during shortages in World War II. 
Tetrasodium pyrophosphate (anhydrous) is also used in some common baking powders.

Uses    
Tetrasodium pyrophosphate (anhydrous) is a coagulant, emulsifier, and sequestrant that is mildly alkaline, with a ph of 10. 
Tetrasodium pyrophosphate (anhydrous) is moderately soluble in water, with a solubility of 0.8 g/100 ml at 25°c. 
Tetrasodium pyrophosphate (anhydrous) is used as a coagulant in noncooked instant puddings to provide thicken- ing. 
Tetrasodium pyrophosphate (anhydrous) functions in cheese to reduce the meltability and fat separa- tion. 
Tetrasodium pyrophosphate (anhydrous) is used as a dispersant in malted milk and chocolate drink powders. 
Tetrasodium pyrophosphate (anhydrous) prevents crystal formation in tuna. 
Tetrasodium pyrophosphate (anhydrous) is also termed sodium pyrophosphate, tetrasodium diphosphate, and tspp.
Pharmaceutic aid.
Tetrasodium pyrophosphate (anhydrous) is a non-toxic and biocompatible compound used as an electroactive media for exfoliation of the surface coating. 
Tetrasodium pyrophosphate (anhydrous) is also be used as an additive in the food industry.

Tetrasodium pyrophosphate (anhydrous) can be used as an inorganic additive to improve the stability and electrochemical performance of redox flow batteries.
As a water softener; as a metal cleaner; as a dispersing and emulsifying agent.
Tetrasodium pyrophosphate (anhydrous) is used as a buffering agent, an emulsifier, a dispersing agent, and a thickening agent, and is often used as a food additive. 
Common foods containing Tetrasodium pyrophosphate (anhydrous) include chicken nuggets, marshmallows, pudding, crab meat, imitation crab, canned tuna, and soy-based meat alternatives and cat foods and cat treats where it is used as a palatability enhancer.

In toothpaste and dental floss, Tetrasodium pyrophosphate (anhydrous) acts as a tartar control agent, serving to remove calcium and magnesium from saliva and thus preventing them from being deposited on teeth. 
Tetrasodium pyrophosphate (anhydrous) is used in commercial dental rinses before brushing to aid in plaque reduction.
Tetrasodium pyrophosphate (anhydrous) is sometimes used in household detergents to prevent similar deposition on clothing, but due to its phosphate content it causes eutrophication of water, promoting algae growth.

Tetrasodium pyrophosphate (anhydrous) is used in the following products: pH regulators and water treatment products, water softeners, cosmetics and personal care products, coating products and fillers, putties, plasters, modelling clay.
Release to the environment of Tetrasodium pyrophosphate (anhydrous) can occur from industrial use: formulation of mixtures, in the production of articles and in processing aids at industrial sites.
Other release to the environment of Tetrasodium pyrophosphate (anhydrous) is likely to occur from: indoor use (e.g. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners) and outdoor use.

Preparation    
Tetrasodium pyrophosphate (anhydrous) is formed when pure disodium hydrogen orthophosphate is heated to 500℃ for 5 hours. 
The product will contain better than 98 per cent Na4P2O7. 
Crystalline masses large enough for optical measurements are produced by heating in platinum to above the melting point of the Tetrasodium pyrophosphate (anhydrous), 800°, and cooling slowly. 
Higher temperatures or longer heating times do not change the Tetrasodium pyrophosphate (anhydrous), as this is the final product in the dehydration of disodium hydrogen orthophosphate.

Reactivity Profile    
Tetrasodium pyrophosphate (anhydrous) is basic. 
Reacts exothermically with acids. 
Incompatible with strong oxidizing agents. 
Decomposes in ethyl alcohol.

Health Hazard    
Tetrasodium pyrophosphate (anhydrous) is of low toxicity, but the dust may be irritating to the eyes, upper respiratory tract, and skin. 
Mild to moderate skin and eye irritation have occurred with acute exposure to the dust.

Synonyms
Sodium pyrophosphate
TETRASODIUM PYROPHOSPHATE
7722-88-5
TSPP
Tetrasodium diphosphate
Phosphotex
Diphosphoric acid, tetrasodium salt
Sodium diphosphate
Victor TSPP
Caswell No. 847
Sodium pyrophosphate [USAN]
Sodium pyrophosphate tetrabasic
Natrium pyrophosphat
Pyrophosphoric acid tetrasodium salt
Sodium diphosphate, anhydrous
Natrium pyrophosphat [German]
Sodium phosphate (Na4P2O7)
HSDB 854
MFCD00003513
Na4P2O7
DTXSID9042465
CHEBI:71240
O352864B8Z
Sodium pyrophosphate (USAN)
Sodium pyrophosphate, tetrabasic
Tetranatriumpyrophosphat [German]
EINECS 231-767-1
NSC 56751
EPA Pesticide Chemical Code 076405
Sodium diphosphate tetrabasic
tetrasodium phosphonato phosphate
UNII-O352864B8Z
Tetrasodium pyrophosphate, anhydride
SODIUMPYROPHOSPHATE
tetra sodium pyrophosphate
Na4O7P2
EC 231-767-1
Diphosphoric acid sodium salt
DTXCID7022465
SODIUM PYROPHOSPHATE [II]
Sodium diphosphate (Na4(P2O7))
SODIUM PYROPHOSPHATE [FCC]
Tetrasodium pyrophosphate Anhydrous
SODIUM PYROPHOSPHATE [HSDB]
CS-B1771
SODIUM PYROPHOSPHATE [VANDF]
tetrasodium (phosphonooxy)phosphonate
Tox21_110033
SODIUM PYROPHOSPHATE [MART.]
SODIUM PYROPHOSPHATE [WHO-DD]
TETRASODIUM PYROPHOSPHATE [MI]
AKOS015914004
AKOS024418778
Diphosphoric acid, sodium salt (1:4)
TETRASODIUM PYROPHOSPHATE [INCI]
NCGC00013687-01
CAS-7722-88-5
FT-0689073
D05873
E75941
EN300-332889
Q418504
1004291-85-3