Disodium hydrogen phosphate

Basic Information

View in Editor

CAS Number

7558-79-4

Molecular Formula

HNa2O4P

Molecular Weight

141.96 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

Melting Point

243-245 °C

Boiling Point

No data available

Density

1.064 g/mL at 20 °C

Water Solubility

>=10 g/100 mL at 20 ºC

Solubility

H2O: 0.5 M at 20 °C, clear, colorless

Odor

NONE

SMILES

View in Editor

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

InChI

InChI=1S/2Na.H3O4P/c;;1-5(2,3)4/h;;(H3,1,2,3,4)/q2*+1;/p-2

InChIKey

BNIILDVGGAEEIG-UHFFFAOYSA-L

LogP

-0.05220

pKa

(1) 2.15, (2) 6.82, (3) 12.38 (at 25℃)

Complexity

46.5

Safety Information

View Safety Information

Stability

Stable. Incompatible with strong acids. Hygroscopic.

Sensitiveness

Hygroscopic

Synonyms & References

English

sodium hydrogen phosphate
Disodium hydrogen phosphate
Sodium phosphate,dibasic
Disodium hydrogen phosphate,edible
disodium orthophosphate
di-sodium hydrogen orthophosphate
di-Sodium Hydrogenphosphate
Disodium Monohydrogen Orthophoshate
disodium monohydrogen phosphate
Disodium Monophosphate
disodium phosphoric acid
Phosphoric acid, disodium salt
Sodium acid phosphate
dibasic sodium phosphate
Sodium monohydrogen phosphate
sodium monohydrogen phosphate (2:1:1)
SODIUM PHOSPHATE REAGENT GRADE DIBASIC
soda phosphate
Disodium Phosphate Dihydrate
DSP
Disodium Phosphate
disodium phosphate anhydrous
Disodium Hydrogenorthophosphate
Phosphate Standard for IC
Sodium hydrogen orthophosphate
SODIUM PHOSPHATE DIBASIC ANHYDROUS, MOLECULAR BIOLOGY GRADE
SODIUM PHOSPHATE, DIBASIC, ANHYDROUS
ADSP
di-SodiuM hydrogen phosphate dodecahydrate
DisodiuM hydrogen phosphate dodecahydrate
pH standard-DisodiuM hydrogen

MDL Number

MFCD00149182

Customs Code

2835220000

FAQ

What is Disodium hydrogen phosphate (CAS: 7558-79-4)?

Disodium hydrogen phosphate is a chemical compound with the formula Na2HPO4. It is a white, crystalline solid commonly used as a pH buffer and in various industrial applications. This compound is soluble in water and has a neutral to slightly basic pH. It is also known as sodium hydrogen phosphate and is widely used in laboratory settings. Its CAS number is 7558-79-4, which helps in identifying and regulating its use in chemical products.

What are the main uses of Disodium hydrogen phosphate (CAS: 7558-79-4)?

Disodium hydrogen phosphate is primarily used as a buffer in pharmaceuticals, food, and research. It helps maintain pH stability in solutions, making it essential in drug formulations and food preservation. In industry, it serves as a raw material for producing other phosphate compounds. It is also used in detergents and as a stabilizer in biochemical processes. Its versatility and CAS number 7558-79-4 make it a key component in multiple applications.

Is Disodium hydrogen phosphate (CAS: 7558-79-4) safe?

Disodium hydrogen phosphate is generally considered safe when handled properly. It is non-toxic in small amounts but should be treated with care to avoid eye or skin contact. Prolonged exposure may cause irritation, so protective gear like gloves and goggles is recommended. It complies with safety standards for industrial and laboratory use. Always follow guidelines for handling chemical substances with CAS number 7558-79-4.

How should Disodium hydrogen phosphate (CAS: 7558-79-4) be stored?

Disodium hydrogen phosphate 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 airtight containers to prevent contamination. Avoid exposure to high humidity to maintain its quality. Proper storage ensures the longevity and effectiveness of this compound with CAS number 7558-79-4.