PRODUCTS

SODIUM PYROPHOSPHATE

Sodium Pyrophosphate is used in doughnuts and biscuits for its variable gas release rate during the mixing, bench action, and baking process.
Sodium Pyrophosphate is used in baking powder as a leavening agent.
Sodium Pyrophosphate is used in canned fish products to reduce the level of undesired struvite crystals (magnesium ammonium phosphate hexahydrate) by complexing the magnesium.

CAS Number: 7722-88-5
13472-36-1 (decahydrate)
EC Number: 231-767-1
E number: E450(iii) (thickeners, ...)
Molecular Formula: Na4P2O7 / Na4O7P2
Molar mass: 265.900 g•mol−1

SYNONYMS:
Tetrasodium diphosphate, Pyrophosphate, Sodium pyrophosphate, Tetrasodium pyrophosphate (anhydrous), TSPP, pyrophosphate, TSPP, SODIUM DIPHOSPHATE DECAHYDRATE, Anhydrous so dium pyrophosphate, pyro, SODIUM TETRAPYROPHOSPHATE, sodiumpyrophosphate[na4p2o7], tetrasodiumpyrophosphate,anhydrous, Nsc56751, victortspp, Pyrophosphate, Sodium pyrophosphate, Tetrasodium diphosphate, Tetrasodium pyrophosphate (anhydrous), TSPP, Sodium pyrophosphate, tetrasodium phosphate, TSPP,Tetrasodium Phosphate, Tetrasodium Pyrophosphate, Tetrasodium Pyrophosphate, Tetrasodium Diphosphate, Pyrophosphate, Sodium pyrophosphate, Tetrasodium pyrophosphate (anhydrous), TSPP, Tetrasodium diphosphate, Pyrophosphate, Sodium pyrophosphate, Tetrasodium pyrophosphate (anhydrous), TSPP, Tetrasodium Diphosphate, Sodium Pyrophosphate, TSPP, Pyrophosphate, Sodium pyrophosphate, Tetrasodium diphosphate, Tetrasodium pyrophosphate (anhydrous), TSPP, Sodium pyrophosphate, TETRASODIUM PYROPHOSPHATE, 7722-88-5, TSPP, Phosphotex, Tetrasodium diphosphate, Sodium diphosphate, Diphosphoric acid, tetrasodium salt, Victor TSPP, Caswell No. 847, Sodium pyrophosphate tetrabasic, Natrium pyrophosphat, Sodium pyrophosphate [USAN], Sodium diphosphate, anhydrous, Pyrophosphoric acid tetrasodium salt, Sodium phosphate (Na4P2O7), HSDB 854, sodium pyrophosphate(V), Sodium diphosphate (Na4P2O7), Sodium pyrophosphate, tetrabasic, Sodium pyrophosphate (Na4P2O7), Anhydrous tetrasodium pyrophosphate, Tetrasodium pyrophosphate, anhydrous, EINECS 231-767-1, NSC 56751, EPA Pesticide Chemical Code 076405, DTXSID9042465, UNII-O352864B8Z, CHEBI:71240, MFCD00003513, NSC-56751, Na4P2O7, O352864B8Z, DTXCID7022465, EC 231-767-1, Sodium pyrophosphate (USAN), SODIUM PYROPHOSPHATE (II), SODIUM PYROPHOSPHATE [II], SODIUM PYROPHOSPHATE (MART.), SODIUM PYROPHOSPHATE [MART.], 1004291-85-3, Tetrasodium pyrophosphate, anhydride, Tetrasodium pyrophosphate (anhydrous), SODIUMPYROPHOSPHATE, tetra sodium pyrophosphate, ACCOLINE 126, Na4O7P2, TETRON (DISPERSANT), Diphosphoric acid sodium salt, Sodium pyrophosphate anhydrous, DTXCID408842, 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 [WHO-DD], TETRASODIUM PYROPHOSPHATE [MI], AKOS015914004, AKOS024418778, Diphosphoric acid, sodium salt (1:4), TETRASODIUM PYROPHOSPHATE [INCI], NCGC00013687-01, CAS-7722-88-5, TETRASODIUM DIPHOSPHATE (NA4P2O7), TETRASODIUM PYROPHOSPHATE (NA4P2O7), E 450, NS00093593, D05873, E75941, EN300-332889, Q418504, pyrophosphate, TSPP, SODIUM DIPHOSPHATE DECAHYDRATE, Anhydrous sodium pyrophosphate, pyro, SODIUM TETRAPYROPHOSPHATE, sodiumpyrophosphate[na4p2o7], tetrasodiumpyrophosphate,anhydrous, Nsc56751, victortspp, Tetrasodium pyrophosphate, Sodium pyrophosphate, Sodium diphosphate, Pyrophosphate sodium salt, TSPP, Sodium pyrophosphate decahydrate, Tetrasodium pyrophosphate, Sodium pyrophosphate, Sodium diphosphate, Pyrophosphate sodium salt, TSPP, Disodium dihydrogen pyrophosphate,

Sodium diphosphate is an inorganic sodium salt comprised of a diphosphate(4-) anion and four sodium(1+) cations.
More commonly known as Sodium Pyrophosphate, it finds much use in the food industry as an emulsifier and in dental hygiene as a calcium-chelating salt.

Sodium Pyrophosphate has a role as a food emulsifier, a chelator and a food thickening agent.
Sodium Pyrophosphate contains a diphosphate(4-).
Sodium Pyrophosphate is suitable for battery materials development.

Sodium pyrophosphate tetrabasic, referred to as TSPP, plays a critical role in laboratory applications, particularly as a buffering agent.
Sodium Pyrophosphate's buffering capabilities are essential for maintaining the pH stability of various solutions, which is in analytical procedures and experimental setups.

The unique chemical properties of Sodium pyrophosphate tetrabasic, including its ability to complex with metal ions, make it invaluable in the preparation of specialized buffers, such as the EDTA-sodium pyrophosphate extraction buffer.
This specific buffer is notably effective in the extraction and analysis of microcystins from soil samples, a group of toxins produced by cyanobacteria that pose significant environmental and public health risks.

Sodium Pyrophosphate is also known as Sodium Diphosphate Tetrabasic and Tetrasodium Pyrophosphate, this white granular powder is soluble to clear and colorless in water.
Sodium Pyrophosphate is hygroscopic and soluble in water but not ethyl alcohol.

While it is stable, Sodium Pyrophosphate is also incompatible with strong oxidizing agents.
Sodium Pyrophosphate is basic and reacts exothermically with acids.
Sodium Pyrophosphate also decomposes in ethyl alcohol.

Sodium Pyrophosphate is an anhydrous chemical substance in the form of an odorless, colorless white powder or granule.
Sodium Pyrophosphate is known as a normal component of human body fluids.
Sodium Pyrophosphate is an inorganic phosphate salt.

Tetrasodium pyrophosphate (TSPP), also called tetrasodium disphosphate or sodium pyrophosphate, is a synthetic ingredient that can be used as an acid regulator, sequestrant, protein modifier, coagulant, and a dispersing agent in food with the European food additive number E450(iii).
Sodium Pyrophosphate is gluten free and vegan.

Sodium Pyrophosphate (Na4P2O7) is a non-toxic and biocompatible compound used as an electroactive media for exfoliation of the surface coating.
Sodium pyrophosphate, also called Tetrasodium pyrophosphate or TSPP is used in the laboratory as a buffering agent.
Sodium Pyrophosphate has been shown to be useful in the preparation of an EDTA-sodium pyrophosphate extraction buffer for microcystin analysis of soil samples.

Sodium Pyrophosphate is an odorless, white powder or granules.
Sodium Pyrophosphate is an inorganic sodium salt comprised of a diphosphate(4-) anion and four sodium(1+) cations.
More commonly known as Sodium Pyrophosphate, it finds much use in the food industry as an emulsifier and in dental hygiene as a calcium-chelating salt.

Sodium Pyrophosphate has a role as a food emulsifier, a chelator and a food thickening agent.
Sodium Pyrophosphate contains a diphosphate(4-).
Sodium Pyrophosphate is odorless, white powder or granules.

Solubility of Sodium Pyrophosphate in water is 3.16 g / 100 mL (cold water); 40.26 g / 100 mL boiling water.
Sodium Pyrophosphate is an inorganic salt used as a buffering agent.
Sodium Pyrophosphate, also called Tetrasodium pyrophosphate, tetrasodium phosphate or TSPP, is an inorganic compound with the formula Na4P2O7.

As a salt, Sodium Pyrophosphate is a white, water-soluble solid.
Sodium Pyrophosphate is composed of pyrophosphate anion and sodium ions.

Sodium Pyrophosphate is a condensed phosphate formed when sodium orthophosphate is heated to remove the water.
Sodium Pyrophosphate is an inorganic compound consisting of sodium cations and pyrophosphate anion.

USES and APPLICATIONS of SODIUM PYROPHOSPHATE:
Sodium Pyrophosphate is used as a wool de-fatting agent, in bleaching operations, as a food additive.
Sodium pyrophosphate is used in water softener, detergent, emulsifying agent, metal cleaner and nutritional supplement.
Sodium Pyrophosphate acts as a buffering agent, thickening agent and dispersing agent.

Sodium Pyrophosphate also acts as a tartar control agent in toothpaste and dental floss.
In addition, Sodium Pyrophosphate is used as a chelating agent in antimicrobial studies.
Sodium Pyrophosphate is also used as a food additive in common foods such as chicken nuggets, crab meat and canned tuna.

Sodium Pyrophosphate 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 Sodium Pyrophosphate 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, Sodium Pyrophosphate acts as a tartar control agent, serving to remove calcium and magnesium from saliva and thus preventing them from being deposited on teeth.
Sodium Pyrophosphate is used in commercial dental rinses before brushing to aid in plaque reduction.

Sodium Pyrophosphate 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.
Food industry uses of Sodium Pyrophosphate: Leavening acid (in some baking powder systems), emulsifying and buffering agent, sequestrant (binds Ca²⁺) — used under regulated food additive names and limits (check local food regulations).

Detergents / cleaners: Sodium Pyrophosphate is used Water softening, builder, sequestrant to keep hardness ions soluble.
Industrial / technical: Sodium Pyrophosphate is used Water treatment, ceramics, metal surface cleaning, corrosion inhibition in some formulations, and as an intermediate or reagent in chemical syntheses.

Dental / oral care: Sodium Pyrophosphate is used chelating/cleaning action (some phosphate salts used in dental products for tartar control or cleaning formulations).
Sodium Pyrophosphate is a leavening agent, preservative, sequestrant, and buffer which is mildly acidic with a ph of 4.1.

Sodium Pyrophosphate is moderately soluble in water, with a solubility of 15 g in 100 ml at 25°c.
Sodium Pyrophosphate is used in doughnuts and biscuits for its variable gas release rate during the mixing, bench action, and baking process.
Sodium Pyrophosphate is used in baking powder as a leavening agent.

Sodium Pyrophosphate is used in canned fish products to reduce the level of undesired struvite crystals (magnesium ammonium phosphate hexahydrate) by complexing the magnesium.
Sodium Pyrophosphate is used to sequester metals in processed potatoes.

Sodium Pyrophosphate is also termed sapp, sodium acid pyrophosphate, acid sodium pyrophosphate, disodium diphosphate, and disodium dihydrogen pyrophosphate.
Sodium Pyrophosphate Dibasic is anhydrous form, pyrophosphate salt used in buffers.

Sodium Pyrophosphate is used in food mainly for its two properties:
Sodium Pyrophosphate is a leavening acid that combines with baking soda to release carbon dioxide to improve the texture and volume of baked goods.

Sodium Pyrophosphate is a chelating agent to chelate iron to prevent discolouration in processed potatoes.
Sodium Pyrophosphate is extensively used in food processing, such as in canned seafood, cured meat, and potato products, to adjust the pH, maintain colour, improve the water-holding capacity, and reduce purge during retorting.

Sodium Pyrophosphate is used as a pH buffer.
In other words, Sodium Pyrophosphate is used to maintain a certain level of acidity in a substance.
Sodium Pyrophosphate is a substance used in processed and milled grain products.

Sodium Pyrophosphate is used as a dough conditioner in meat products containing soy.
Sodium Pyrophosphate is used to wash and peel pandas.
The usage rate of Sodium Pyrophosphate here should not exceed 0.3 ppm.

As its name suggests, Sodium Pyrophosphate is a very good source of phosphorus (as a nutrient) and also a good emulsifier.
Sodium Pyrophosphate is used as an anti-coagulant in well drilling operations.
Sodium Pyrophosphate is used as a dispersing agent to remove rust stains in the electro-deposition of metals.

One of the substances used as a good emulsifier, buffer and cleaning material assistant in toothpaste production is Sodium Pyrophosphate.
Sodium Pyrophosphate is a very good tartar control chemical.
Sodium Pyrophosphate is used intensively in the production of toothpastes since it has the effect of removing Calcium and Magnesium metals from the saliva released from the human body.

Sodium Pyrophosphate is used as an assistant substance in the production of industrial and institutional detergents.
Sodium Pyrophosphate is used in water treatment systems of buildings.
In this sense, Sodium Pyrophosphate's use plays a key role.

Sodium Pyrophosphate is used as an auxiliary chemical in the production of corrosion control agents.
Sodium Pyrophosphate is used in the paper processing industry.
In the paint and coating industry uses of Sodium Pyrophosphate, polyphosphates are chemicals that help pigments to wet and disperse.

Sodium Pyrophosphate is generally used as a sequestrant, stabilizer and dispersant agent in water-based latex paints.
Sodium Pyrophosphate is used as a preservative in the food industry.
Sodium Pyrophosphate is used extensively in many foods.

Sodium Pyrophosphate is used in the food industry as an emulsifying agent, nutrient and texturing agent in applications including: processed cheese, seafood products, hamburgers and meat.
In food industry, Sodium Pyrophosphate is used as buffering agent, emulsifier, nutrition ingredients and quality improver.

Sodium Pyrophosphate 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.
Sodium Pyrophosphate also acts as a tartar control agent in toothpaste and dental floss.

In addition, Sodium Pyrophosphate is used as a chelating agent in antimicrobial studies.
Sodium Pyrophosphate is also used as a food additive in common foods such as chicken nuggets, crab meat and canned tuna.
Textile: Sodium Pyrophosphate is used as an inorganic stabilizer in textile.

Detergent: As a water softener for detergents, Sodium Pyrophosphate can be used as an emulsifier to suspend the oils and to prevent their sedimentation on the laundry in the wash.
Chemistry: Sodium Pyrophosphate is used as ph value adjuster in chemical industry.

Tooth paste use of Sodium Pyrophosphate: Since they remove Ca and Mg ions from saliva, they do not stay on the teeth so they are used as buffer in toothpastes.
Sodium pyrophosphate is used as a buffering agent, an emulsifier, a dispersing agent, and a thickening agent, and is often used as a food additive.

Sodium Pyrophosphate is widely used as an emulsifying salt (ES) in process cheese.
Common foods containing sodium pyrophosphate 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.

Sodium Pyrophosphate is the active ingredient in Bakewell, the substitute for baking powder's acid component marketed during shortages in World War II.
Sodium Pyrophosphate is also used in some common baking powders.

With the properties of chelating metal ions, increasing protein water holding capacity, PH buffering, stabilization, emulsification, casein thickening and ect, Sodium Pyrophosphate is widely used in food to improve the gel strength and the tenderness of meat products/analogs.
Also, Sodium Pyrophosphate is used with other phosphates (e.g. sodium hexametaphosphate, sodium acid pyrophosphate) in seafood to increase the water retention.

Sodium Pyrophosphate is used as a wool de-fatting agent, in bleaching operations, as a food additive.
The related substance Tetrasodium pyrophosphate decahydrate (Na4P2O7 0H2O) occurs as colorless transparent crystals.
Sodium Pyrophosphate loses its water when heated to 93.8°C.

Sodium Pyrophosphate is also used as an additive in the food industry.
Sodium Pyrophosphate can be used as an inorganic additive to improve the stability and electrochemical performance of redox flow batteries.
Sodium Pyrophosphate is a coagulant, emulsifier, and sequestrant that is mildly alkaline, with a ph of 10.

Sodium Pyrophosphate is moderately soluble in water, with a solubility of 0.8 g/100 ml at 25°c.
Sodium Pyrophosphate is used as a coagulant in noncooked instant puddings to provide thicken- ing.
Sodium Pyrophosphate functions in cheese to reduce the meltability and fat separa- tion.

Sodium Pyrophosphate is used as a dispersant in malted milk and chocolate drink powders.
Sodium Pyrophosphate prevents crystal formation in tuna.
Sodium Pyrophosphate is also termed sodium pyrophosphate, tetrasodium diphosphate, and tspp.

Sodium Pyrophosphate is used as a water softener; as a metal cleaner; as a dispersing and emulsifying agent.
Sodium Pyrophosphate 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 tSodium Pyrophosphate 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, Sodium Pyrophosphate acts as a tartar control agent, serving to remove calcium and magnesium from saliva and thus preventing them from being deposited on teeth.

Sodium Pyrophosphate is used in commercial dental rinses before brushing to aid in plaque reduction.
Sodium Pyrophosphate 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.

-Food uses of Sodium Pyrophosphate:
As a source of phosphorus, Sodium Pyrophosphate is an emulsifier which is used for the binding of soybean particles and protein water connection.
Sodium Pyrophosphate is also used as a thickener in ready puddings.

FOOD USES of SODIUM PYROPHOSPHATE:
Food grade, Sodium Pyrophosphate is mainly used in following two functions:
A buffering agent: with the PH value from 9.8 to 10.8 (1% solution), Sodium Pyrophosphate can be used as an alkaline to adjust pH in processed food, pudding and etc.

A calcium sequestrant:
Sodium Pyrophosphate can remove naturally occurring calcium ions from proteins and crosslink with proteins, which results in accelerating protein gelation, improving texture (mouthfeel) and reducing cooking loss in meat analog production (e.g. soy protein).

Following food list may contain Sodium Pyrophosphate:
Meat analogs, such as soy or wheat based food, with the appearance, flavor and mouth-feel the same with meat but not made from meat.
*Marshmallows
*Pudding
*Cheese
*Ice cream
*Milk protein products
*Tuna
*Toothpaste

Orally the main purpose of Sodium Pyrophosphate is to prevent the formation of calculus by reducing the deposition of calcium and magnesium on teeth.

Thus, Sodium Pyrophosphate is commonly used as the anticalculus component of many tartar-control toothpastes and mouth rinse.
Sodium Pyrophosphate also has the same function.
The top toothpaste manufacturer, Crest also uses it as the anti-tartar ingredient in its whitening expressions.

IS SODIUM PYROPHOSPHATE SAFE TO EAT?
Yes, Sodium Pyrophosphate almost has no side effects and the safety has been approved by the U.S. Food and Drug Administration (FDA) and European Food Safety Authority (EFSA), as well as the Joint FAO/WHO Expert Committee on Food Additives (JECFA).

PRODUCTION AND REACTIONS of SODIUM PYROPHOSPHATE:
Sodium Pyrophosphate is a sodium salt and is derived from its carbonate and phosphates, such as tkpp.

SOLUBILITY of SODIUM PYROPHOSPHATE:
Sodium Pyrophosphate is soluble in water.
Sodium Pyrophosphate is insoluble in ethyl alcohol.

NOTES of SODIUM PYROPHOSPHATE:
Sodium Pyrophosphate is hygroscopic.
Sodium Pyrophosphate is incompatible with strong oxidizing agents and strong acids.

CHEMICAL PROPERTIES of SODIUM PYROPHOSPHATE:
Sodium Pyrophosphate is a white crystalline powder or colourless crystals with the formula Na4P2O7.
Sodium Pyrophosphate contains the pyrophosphate ion and sodium cation.
There is also a hydrated form of Sodium Pyrophosphate, Na4P2O7.10H2O.

PROPERTIES of SODIUM PYROPHOSPHATE:
Sodium Pyrophosphate is produced by the reaction of furnace-grade phosphoric acid with sodium carbonate to form disodium phosphate, which is then heated to 450 °C to form tetrasodium pyrophosphate:
2 Na2HPO4 → Na4P2O7 + H2O

Sodium Pyrophosphate appears as odorless, white powder or granules.
mp: 995 °C.
Density: 2.53 g/cm3.
Solubility in water: 3.16 g/100 mL (cold water); 40.26 g/100 mL boiling water.
The related substance tetrasodium pyrophosphate decahydrate (Na4P2O7*10H2O) occurs as colorless transparent crystals.
Loses its water when heated to 93.8 °C.

CHEMICAL PROPERTIES of SODIUM PYROPHOSPHATE:
Disodium dihydrogendiphosphate [7758-16-9], disodium diphosphate, acidic Sodium Pyrophosphate, Na2H2P2O7, Mr 221.97, d 2.31.
Sodium Pyrophosphate's solubility in water is 13g Na2H2P2O7/100g H2O at 20 °C, and 20g at 80°C.

The pH of a 1% aqueous solution of Sodium Pyrophosphate is 4.1.
The usual commercial product is the anhydrous, nonhygroscopic salt in powder form.

The hexahydrate, Na2H2P2O7.6H2O, d 1.85, crystallizes from aqueous solution below 27 °C.
Above this temperature, Sodium Pyrophosphate is converted to the anhydrous form.

Disodium diphosphate is used as a (tropically stable) acid carrier in baking powder, for improvement of flow properties in flour, for pH regulation, and in dental care products for prevention of tartar formation.

PREPARATION of SODIUM PYROPHOSPHATE:
Sodium Pyrophosphate is formed when pure disodium hydrogen orthophosphate is heated to 500℃ for 5 hours.
Sodium Pyrophosphate 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 Sodium Pyrophosphate, 800°, and cooling slowly.
Higher temperatures or longer heating times do not change the Sodium Pyrophosphate, as this is the final product in the dehydration of disodium hydrogen orthophosphate.

REACTIVITY PROFILE of SODIUM PYROPHOSPHATE:
Sodium Pyrophosphate is basic.
Sodium Pyrophosphate reacts exothermically with acids.
Sodium Pyrophosphate is incompatible with strong oxidizing agents.
Sodium Pyrophosphate decomposes in ethyl alcohol.

CHEMICAL PROPERTIES & REACTIVITY of SODIUM PYROPHOSPHATE:
*Ion composition:
Sodium Pyrophosphate contains the pyrophosphate anion (P₂O₇⁴⁻) with sodium counterions.
Sodium Pyrophosphate can undergo hydrolysis (reversion) to orthophosphate under acid or prolonged heating conditions.

*Chelation / sequestration:
Pyrophosphate anion is a good chelating/complexing agent for divalent cations (Ca²⁺, Mg²⁺) — that property underlies many of its uses (e.g., in food, detergents, water treatment).
Stability: Sodium Pyrophosphate is stable under normal storage if kept dry; hydrates may release water with heating.
Reactive toward strong acids (hydrolyses).

HOW IS SODIUM PYROPHOSPHATE MADE?
Sodium Pyrophosphate can be produced by the neutralization of phosphoric acid with sodium hydroxide with mol proportions of 2:1.
Food grade Sodium Pyrophosphate exists as two forms, and follows the corresponding chemical formula:
Sodium Pyrophosphate Anhydrous: Na4P2O7
Sodium Pyrophosphate Decahydrate: Na4P2O7 · 10H2O

PREPARATION of SODIUM PYROPHOSPHATE:
Sodium pyrophosphate is produced from sodium dihydrogenmonophosphate by heating at 200-250℃：
Na2CO3+2H3PO4→2NaH2PO4+H2O+CO2↑
2NaH2PO4→Na2H2P2O7+H2O

FLAMMABILITY AND EXPLOSIBILITY of SODIUM PYROPHOSPHATE:
Sodium Pyrophosphate is non flammable

BENEFITS / FUNCTIONAL CHARACTERISTICS of SODIUM PYROPHOSPHATE:
Effective sequestrant / chelator for hardness ions — Sodium Pyrophosphate improves emulsification, prevents precipitation in formulations (foods, detergents).

Alkaline buffering ability in formulations — Sodium Pyrophosphate is useful in some food or industrial applications.

Cost-effective, Sodium Pyrophosphate is widely available inorganic salt with established regulatory acceptance for many uses (subject to local regulations/limits).

CHEMICAL FORMULA & MOLECULAR WEIGHT (REPRESENTATIVE) of SODIUM PYROPHOSPHATE:
Representative anhydrous formula: Na₄P₂O₇ (sometimes written Na4O7P2).
Average / molecular mass (anhydrous): ≈ 265.90 g·mol⁻¹ (ChemSpider / ChemicalBook value).
Hydrated forms: e.g., Na₄P₂O₇·10H₂O (decahydrate) has a larger formula/mass — verify which hydrate (anhydrous vs decahydrate) your source/product is.

NOTES & CAUTIONS ABOUT NAMES / FORMS of SODIUM PYROPHOSPHATE:
The phrase “sodium pyrophosphate” may refer to different salt forms (di-, tri- or tetrasodium pyrophosphate) or hydrates — always confirm whether the product is anhydrous tetrasodium pyrophosphate (Na₄P₂O₇), a hydrated form (e.g., decahydrate), or an acid-protonated salt (e.g., disodium dihydrogen pyrophosphate).
These forms have different CAS/EC identifiers and different water content and specification values.

PHYSICAL and CHEMICAL PROPERTIES of SODIUM PYROPHOSPHATE:
Molecular Weight: 266
Appearance: White Fine Powder
pH Range (1% w/v): 10.0 to 11.0
Pyro % (minimum): 94.00
P2O5 content % (minimum): 52.00
‘Na’ Content % (minimum): 33.00
Iron as ‘Fe’ content %: 0.02
Chloride as ‘Cl’ content %: 0.2
Sulfate as ‘SO4’ content %: 0.03

Appearance (Colour): White
Appearance (Form): Crystalline powder
Solubility (Turbidity) 10% aq. solution: Clear
Solubility (Colour) 10% aq. solution: Colourless
Assay: min. 99%
pH (5% aq. solution): 9.5 - 10.5
Chloride (Cl): max. 0.002%
Sulphate (SO4): max. 0.005%
Iron (Fe): max. 0.001%

Chemical formula: Na4O7P2
Molar mass: 265.900 g•mol−1
Appearance: Colorless or white crystals
Odor: Odorless
Density: 2.534 g/cm3
Melting point: 988 °C (1,810 °F; 1,261 K) (anhydrous)
79.5 °C (decahydrate)
Boiling point: Decomposes
Solubility in water: 2.61 g/100 mL (0 °C)
6.7 g/100 mL (25 °C)
42.2 g/100 mL (100 °C)

Solubility: Insoluble in ammonia, alcohol
Refractive index (nD): 1.425
Structure
Crystal structure: Monoclinic (decahydrate)
Thermochemistry
Heat capacity (C): 241 J/mol K
Std molar entropy (S⦵298): 270 J/mol K
Std enthalpy of formation (ΔfH⦵298): -3166 kJ/mol
Gibbs free energy (ΔfG⦵): -3001 kJ/mol

Chemical formula: Na4O7P2
Molar mass: 265.900 g•mol−1
Appearance: Colorless or white crystals
Odor: Odorless
Density: 2.534 g/cm3
Melting point:
Anhydrous: 988 °C (1,810 °F; 1,261 K)
Decahydrate: 79.5 °C
Boiling point: Decomposes
Solubility in water:
0 °C: 2.61 g/100 mL
25 °C: 6.7 g/100 mL
100 °C: 42.2 g/100 mL

Solubility: Insoluble in ammonia, alcohol
Refractive index (nD): 1.425
Structure: Monoclinic (decahydrate)
Heat capacity (C): 241 J/mol K
Std molar entropy (S⦵298): 270 J/mol K
Std enthalpy of formation (ΔfH⦵298): -3166 kJ/mol
Gibbs free energy (ΔfG⦵): -3001 kJ/mol
Molecular Formula: Na4P2O7 * 10 H2O
pH (1% solution): 10-10.6
Fluoride (Flor): 0-10 ppm
Arsenic (Bullet): 1.0 ppm max.
Mercury: 0.1 max.
Cadmium: 1.0 max.

Dry Analysis: 95-100%
Formula: Na4P2O7
Molecular weight: 265.9
CAS No. 7722-88-5
EINCS No. 231-767-1
EEC Classification: E 450 (iii)
Appearance: White fine powder.
Shelf life: 24 months in original package, under dry and cool storage conditions.
CBNumber:CB3394942
Molecular Formula:Na4O7P2
Molecular Weight:265.902402

MDL Number:MFCD00003513
MOL File:7722-88-5.mol
Melting Point: 80 °C
Boiling Point: 93.8 °C
Density: 2.53 g/mL at 25 °C (literature value)
Vapor Pressure: 0 Pa at 20°C
Storage Temperature: 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.
Sensitivity: Hygroscopic
Merck Index: 14,9240
Exposure Limits: NIOSH: TWA 5 mg/m3
Stability: Stable.
Incompatible with strong oxidizing agents.
InChIKey: FQENQNTWSFEDLI-UHFFFAOYSA-J
LogP: -3.42
FDA 21 CFR: 182.6787; 182.6789; 582.6787; 582.6789; 173.310; 175.210; 175.300; 181.29; 182.70
Substances Added to Food (formerly EAFUS): SODIUM PYROPHOSPHATE
SCOGS (Select Committee on GRAS Substances): Sodium pyrophosphate, tetrabasic

CAS DataBase Reference: 7722-88-5 (CAS DataBase Reference)
EWG's Food Scores: 1
FDA UNII: O352864B8Z
EPA Substance Registry System: Tetrasodium pyrophosphate (7722-88-5)
Molecular Weight: 265.90 g/mol
Hydrogen Bond Donor Count: 0
Hydrogen Bond Acceptor Count: 7
Rotatable Bond Count: 0
Exact Mass: 265.87100346 g/mol
Monoisotopic Mass: 265.87100346 g/mol
Topological Polar Surface Area: 136 Å²

Heavy Atom Count: 13
Formal Charge: 0
Complexity: 124
Isotope Atom Count: 0
Defined Atom Stereocenter Count: 0
Undefined Atom Stereocenter Count: 0
Defined Bond Stereocenter Count: 0
Undefined Bond Stereocenter Count: 0
Covalently-Bonded Unit Count: 5
Compound Is Canonicalized: Yes
CBNumber: CB3394942
Molecular Formula: Na4O7P2

Molecular Weight: 265.902402
MDL Number: MFCD00003513
MOL File: 7722-88-5.mol
Melting point: 80 °C
Boiling point: 93.8 °C
Density: 2.53 g/mL at 25 °C (lit.)
Vapor pressure: 0 Pa 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
LogP: -3.42

FDA 21 CFR: 182.6787; 182.6789; 582.6787; 582.6789; 173.310; 175.210; 175.300; 181.29; 182.70
Substances Added to Food (formerly EAFUS): SODIUM PYROPHOSPHATE
SCOGS (Select Committee on GRAS Substances): Sodium pyrophosphate, tetrabasic
CAS DataBase Reference: 7722-88-5 (CAS DataBase Reference)
EWG's Food Scores: 1
FDA UNII: O352864B8Z
EPA Substance Registry System: Tetrasodium pyrophosphate (7722-88-5)
Appearance (Colour): White
Appearance (Form): Crystalline powder
Solubility (Turbidity) 10% aq. solution: Clear

Solubility (Colour) 10% aq. solution: Colourless
Assay: min. 99%
pH (5% aq. solution): 9.5 - 10.5
Chloride (Cl): max. 0.002%
Sulphate (SO4): max. 0.005%
Iron (Fe): max. 0.001%
Molecular Formula: Na4P2O7.10H2O
Molecular Weight: 446.06
Part A
Storage: Room Temperature
Shelf Life: 60 Months

HSN Code: 28353900
IUPAC Name: Tetra sodium diphosphate
Molecular Formula: Na4P2O7
Molecular Weight: 266
Appearance: White Fine Powder
pH Range (1% w/v): 10.0 to 11.0
Pyro % (minimum): 94.00
P2O5 content % (minimum): 52.00
‘Na’ Content % (minimum): 33.00
Iron as ‘Fe’ content %: 0.02
Chloride as ‘Cl’ content %: 0.2
Sulfate as ‘SO4’ content %: 0.03

Appearance: White, odorless crystalline powder or granules.
Odor: Odorless.
Density / solid density: reported densities vary by source and hydrate — one dataset lists ~2.53 g·cm⁻³ (solid, anhydrous).
Melting / decomposition: High thermal stability; anhydrous material decomposes at high temperature (literature lists very high mp or decomposition > 900 °C for some pyro-phosphate salts;
hydrate forms lose water at much lower temperatures).
Solubility: Soluble in water (readily soluble, forms alkaline aqueous solutions);
low solubility in organic solvents.
pH (aqueous solutions): Alkaline (a 1% solution typically gives pH around ~9–11 depending on concentration and grade)

FIRST AID MEASURES of SODIUM PYROPHOSPHATE:
-Description of first-aid measures:
*If inhaled:
If breathed in, move person into fresh air.
*In case of skin contact:
Wash off with soap and plenty of water.
*In case of eye contact:
Flush eyes with water as a precaution.
*If swallowed:
Never give anything by mouth to an unconscious person.
Rinse mouth with water.
-Indication of any immediate medical attention and special treatment needed:
No data available

ACCIDENTAL RELEASE MEASURES of SODIUM PYROPHOSPHATE:
-Environmental precautions:
Do not let product enter drains.
-Methods and materials for containment and cleaning up:
Keep in suitable, closed containers for disposal.

FIRE FIGHTING MEASURES of SODIUM PYROPHOSPHATE:
-Extinguishing media:
*Suitable extinguishing media:
Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
-Further information:
No data available

EXPOSURE CONTROLS/PERSONAL PROTECTION of SODIUM PYROPHOSPHATE:
-Control parameters:
--Ingredients with workplace control parameters:
-Exposure controls:
--Personal protective equipment:
*Eye/face protection:
Use equipment for eye protection.
*Skin protection:
Handle with gloves.
Wash and dry hands.
*Body Protection:
Impervious clothing
*Respiratory protection:
Respiratory protection not required.
-Control of environmental exposure:
Do not let product enter drains.

HANDLING and STORAGE of SODIUM PYROPHOSPHATE:
-Conditions for safe storage, including any incompatibilities:
*Storage conditions:
Store in cool place.
Keep container tightly closed in a dry and well-ventilated place.
Containers which are opened must be carefully resealed and kept upright to prevent leakage.

STABILITY and REACTIVITY of SODIUM PYROPHOSPHATE:
-Reactivity:
No data available
-Chemical stability:
Stable under recommended storage conditions.
-Possibility of hazardous reactions:
No data available
-Conditions to avoid:
No data available