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Disodium hydrogen phosphate

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Identification
Molecular formula
Na2HPO4
CAS number
7558-79-4
IUPAC name
disodium;[hydroxy(oxido)phosphoryl] hydrogen phosphate
State
State

At room temperature, disodium hydrogen phosphate is typically in a solid state. It is often found in its anhydrous form or as one of its hydrates.

Melting point (Celsius)
35.10
Melting point (Kelvin)
308.25
Boiling point (Celsius)
100.00
Boiling point (Kelvin)
373.15
General information
Molecular weight
141.96g/mol
Molar mass
141.9580g/mol
Density
2.3380g/cm3
Appearence

Disodium hydrogen phosphate, often seen as a white, powdery or crystalline solid, is typically odorless. It is hygroscopic, meaning it can absorb moisture from the air, which may make it appear slightly damp or clumpy if exposed to open air for extended periods.

Comment on solubility

Solubility Overview

Disodium [hydroxy(oxido)phosphoryl] hydrogen phosphate, with its complex structure, exhibits distinctly interesting solubility properties. A few key points regarding its solubility are:

  • In Water: This compound is generally soluble in water due to its ionic nature and the presence of functional groups that facilitate hydration.
  • pH Dependence: The solubility may be affected by the pH of the solution. In acidic or basic environments, the solubility can increase or decrease based on the protonation states of the anions and cations involved.
  • Temperature Effects: Like many salts, the solubility of disodium [hydroxy(oxido)phosphoryl] hydrogen phosphate can be influenced by temperature. Typically, higher temperatures boost solubility.
  • Ionic Strength: The presence of other ions in a solution can also impact solubility; increased ionic strength often leads to a decrease in solubility due to common ion effects.

In summary, disodium [hydroxy(oxido)phosphoryl] hydrogen phosphate is a soluble compound in aqueous solutions under standard conditions, but its behavior can vary significantly due to environmental factors, such as pH, temperature, and ionic composition. Understanding these variables is essential for applications in both laboratory and industrial settings.

Interesting facts

Interesting Facts about Disodium; [Hydroxy(oxido)phosphoryl] Hydrogen Phosphate

Disodium; [hydroxy(oxido)phosphoryl] hydrogen phosphate, commonly referred to as a phosphate compound, has a unique and multifaceted role in various chemical and biological processes. Here are some captivating facts about this compound:

  • Biological Significance: This compound is an important source of phosphate, which is essential for the formation of DNA, RNA, and ATP, the energy currency of cells. Phosphates play a crucial role in cellular metabolism and energy transfer.
  • Buffering Agent: Disodium; [hydroxy(oxido)phosphoryl] hydrogen phosphate can act as a buffering agent, maintaining pH stability in biological systems. This property is vital for biochemical reactions that require specific pH ranges to proceed efficiently.
  • Fertility and Agriculture: In agriculture, phosphorus is a key nutrient for plant growth. This compound can enhance soil fertility and promote healthy crop yields by providing readily available phosphorus.
  • Calcium Interaction: The presence of this phosphate can influence calcium metabolism in the body, contributing to bone health and development. Phosphates are known to be integral to the formation of hydroxyapatite, the mineral component of bone.
  • Research Applications: In a laboratory setting, this compound serves as an important reagent and is often used in biochemical assays and research focused on cellular processes and molecular biology.

Due to its varied applications and essential functions in life processes, disodium; [hydroxy(oxido)phosphoryl] hydrogen phosphate illustrates the intricacies of how chemistry intersects with biology and environmental science.

Synonyms
7758-16-9
Disodium diphosphate
Sodium acid pyrophosphate
Disodium dihydrogen pyrophosphate
DISODIUM PYROPHOSPHATE
Diphosphoric acid, disodium salt
Disodium acid pyrophosphate
Dinatriumpyrophosphat
Dinatriumpyrophosphat [German]
Disodium dihydrogen diphosphate
HSDB 377
UNII-H5WVD9LZUD
Pyrophosphoric acid, disodium salt
Sodium pyrophosphate (Na2H2P2O7)
EINECS 231-835-0
EC 231-835-0
DISODIUM PYROPHOSPHATE [HSDB]
DISODIUM PYROPHOSPHATE [VANDF]
SODIUM ACID PYROPHOSPHATE [MI]
SODIUM ACID PYROPHOSPHATE [FCC]
SODIUM ACID PYROPHOSPHATE [VANDF]
DINATRIUMPYROPHOSPHAT (GERMAN)
SODIUM PYROPHOSPHATE, ACID
DISODIUM PYROPHOSPHATE [INCI]
231-835-0
7782-95-8
disodium dihydrogen diphosphatedisodium dihydrogen pyrophosphatesodium acid pyrophosphatedisodium pyrophosphate
sodium pyrophosphate dibasic
H5WVD9LZUD
MFCD00014246
Disodiumpytophosphate
Disodium dihydrogenpyrophosphate
Sodium diphosphate dibasic
disodium pyrophosphate 2-
disodium hydrogen (hydrogen phosphonatooxy)phosphonate
Grahamsches salz
Disodium Diphosphate; Pyrophosphoric Acid Disodium Salt; Diphosphoric Acid Disodium Salt; Disodium Pyrophosphate; Disodium Acid Pyrophosphate;
Glassy sodium phosphate
DSSTox_CID_8842
UNII-P1BM4ZH95L
DSSTox_RID_78658
P1BM4ZH95L
DSSTox_GSID_28842
Sodium pyrophosphate, dibasic
CHEMBL3184949
EINECS 272-808-3
Tox21_200813
AKOS015916169
AKOS024418779
Diphosphoric acid, sodium salt (1:2)
FS45566
NCGC00258367-01
CAS-68915-31-1
di-sodium dihydrogen pyrophosphate anhydrous