Disodium Pyrophosphate

Basic Information

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CAS Number

7758-16-9

Molecular Formula

H4Na2O7P2

Molecular Weight

223.95 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Agricultural Chemicals Pesticides Insecticides

Water Treatment Chemicals Coagulants and Flocculants Inorganic Coagulants

Basic Physical Properties

Density

(hexahydrate) 1.86

Water Solubility

Fully miscible in water. Insoluble in alcohol and ammonia.

Solubility

H2O: 0.1 M at 20 °C, clear, colorless

SMILES

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OP(=O)([O-])OP(=O)(O)[O-].[Na+].[Na+]

InChI

InChI=1S/2Na.H4O7P2/c;;1-8(2,3)7-9(4,5)6/h;;(H2,1,2,3)(H2,4,5,6)

InChIKey

PPJGSBMKHZFHFF-UHFFFAOYSA-N

LogP

-1.5732000000000004

Topological Polar Surface Area

124.29 Å²

Hydrogen Bond Donor/Acceptor

4 / 7

Complexity

143

Safety Information

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GHS Hazard Pictograms

H319

Hazard Statement

H319 Causes serious eye irritation
Serious eye damage/eye irritation

Stability

Stable.

Synonyms & References

English

di-sodium dihydrogen pyrophosphate anhydrous
SAPP
disodium dihydrogenpyrophosphate
Sodium Acid Pyrophosphate
Sodium pyrophosphate dibasic
Diphosphoric acid, disodium salt
Disodium Pyrophosphate
Disodium pytophosphate
dinatriumpyrophosphat
DisodiuM pytophospha
disodiumdiphosphate
DSPP
SAPP 28
SAPP 40
sodiumpyrophosphate,acid
Sodium pyrophosphate
Disodium dihydrogen pyrophosphate
Disodium dihydrogenpyrophosphate
Diphosphoric acid disodium salt
UNII-P1BM4ZH95L
EC 231-835-0
AKOS015916169
Disodium Diphosphate; Pyrophosphoric Acid Disodium Salt; Diphosphoric Acid Disodium Salt; Disodium Pyrophosphate; Disodium Acid Pyrophosphate;
Tox21_200813
UNII-H5WVD9LZUD
P1BM4ZH95L
Sodium acid pyrophosphate
DISODIUM PYROPHOSPHATE [HSDB]
Dinatriumpyrophosphat
disodium;[hydroxy(oxido)phosphoryl] hydrogen phosphate
DSSTox_GSID_28842

MDL Number

MFCD16879039

FAQ

What is Disodium Pyrophosphate (CAS: 7758-16-9)?

Disodium pyrophosphate is a chemical compound with the formula Na2H2P2O7. It is a white, crystalline solid that is commonly used as a food additive and in industrial applications. It is soluble in water and has a pH-neutralizing effect, making it useful in various chemical processes.

What are the main uses of Disodium Pyrophosphate (CAS: 7758-16-9)?

Disodium pyrophosphate is widely used in the food industry as a leavening agent, emulsifier, and stabilizer. It also finds applications in pharmaceuticals, detergents, and as a buffering agent in laboratory settings. Additionally, it is used in the production of ceramics and as a chelating agent in water treatment processes.

Is Disodium Pyrophosphate (CAS: 7758-16-9) safe?

Disodium pyrophosphate is generally considered safe when used in accordance with recommended guidelines. It has low toxicity and is approved for use in food and pharmaceutical products. However, proper handling is necessary to avoid inhalation or skin contact, and safety data sheets should be consulted for specific precautions.

How should Disodium Pyrophosphate (CAS: 7758-16-9) be stored?

Disodium pyrophosphate should be stored in a cool, dry place away from moisture and direct sunlight. It is stable under normal storage conditions and should be kept in a sealed container to prevent contamination. Avoid exposure to high temperatures and humidity to maintain its chemical integrity.