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Phosphonic Acid

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Identification
Molecular formula
H3PO3
CAS number
13598-36-2
IUPAC name
phosphono dihydrogen phosphate
State
State

At room temperature, phosphonic acid is typically found in a solid state. It is known for forming dense, hard crystals that readily absorb water, making it appear somewhat deliquescent.

Melting point (Celsius)
73.60
Melting point (Kelvin)
346.75
Boiling point (Celsius)
200.00
Boiling point (Kelvin)
473.15
General information
Molecular weight
82.03g/mol
Molar mass
82.0330g/mol
Density
1.6510g/cm3
Appearence

Phosphonic acid is a white, crystalline solid. It is hygroscopic and can absorb moisture from the surroundings, lending to its somewhat sticky texture.

Comment on solubility

Solubility of Phosphono Dihydrogen Phosphate (H3PO3)

Phosphono dihydrogen phosphate possesses intriguing solubility characteristics that lend it prominence in various chemical applications:

  • Water Solubility: H3PO3 is known to be highly soluble in water. This property stems from its ability to ionize, forming the dihydrogen phosphate ion (H2PO4-), which readily interacts with water molecules.
  • Factors Influencing Solubility: The solubility may be influenced by factors such as temperature and pH. As temperature increases, solubility generally improves, highlighting the dynamic nature of this compound's behavior in different conditions.
  • Applications of Solubility: Its solubility allows H3PO3 to serve effectively in biological systems and industrial processes, particularly in fertilizer production and as a buffering agent in chemical reactions.

In conclusion, the profound solubility of phosphono dihydrogen phosphate not only underscores its chemical reactivity but also enhances its utility in a variety of contexts. As quoted in many resources, "the more soluble a compound is, the more versatile it can be,” which rings especially true for H3PO3.

Interesting facts

Interesting Facts About Phosphono Dihydrogen Phosphate

Phosphono dihydrogen phosphate, commonly known in the scientific community as H3PO3, is a fascinating chemical compound with a variety of applications and properties that intrigue chemists and students alike. Here are some interesting facts about this compound:

  • Essential Role in Biochemistry: Phosphono dihydrogen phosphate plays a crucial role in metabolic processes, notably as a phosphate donor in various biochemical reactions. Phosphorylation is a key mechanism in signaling pathways, vital for cellular functions.
  • Buffering Agent: This compound is often utilized in buffer solutions, helping to maintain pH stability in biological and chemical experiments. Its ability to resist changes in pH makes it invaluable in laboratory settings.
  • Food Industry Applications: In food science, phosphono dihydrogen phosphate is utilized as a food additive. It can enhance flavors and act as a preservative, showcasing its versatility beyond laboratory use.
  • Indicator of Phosphorus Availability: In environmental science, the presence of phosphono dihydrogen phosphate can indicate the availability of phosphorus in aquatic systems, which is essential for plant growth and ecosystem balance.

Interestingly, this compound belongs to a class of phosphorus oxoacids and is often compared to its relatives, like phosphoric acid (H3PO4). Although they share similar structures, their chemical behaviors can differ significantly, leading to unique applications in synthetic and analytical chemistry.

Overall, phosphono dihydrogen phosphate enriches our understanding of phosphorus chemistry and its myriad roles in both biochemistry and industrial applications. As a key compound in research and food sciences, it stands as an example of how a simple molecule can have profound impacts across various fields of study.

Synonyms
Diphosphoric acid
Pyrophosphoric acid
2466-09-3
Diphosphorsaeure
Phosphonooxyphosphonic acid
phosphono dihydrogen phosphate
H4P2O7
CHEBI:29888
Pyrophosphorsaeure
acide diphosphorique
4E862E7GRQ
DIPHOSPHORIC-ACID
DIPHSOPHORIC ACID
EINECS 219-574-0
UNII-4E862E7GRQ
DTXSID4075035
mu-oxido-bis(dihydroxidooxidophosphorus)
Pyrophosphoric Acid (Technical Grade)
((HO)2P(O)OP(O)(OH)2)
[(HO)2P(O)OP(O)(OH)2]
33943-49-6
PPV
1,5-dihydrido-2,4-dihydroxido-2,4-dioxido-1,3,5-trioxy-2,4-diphosphy-(5)catena
1,5-dihydrido-2,4-dihydroxido-2,4-dioxido-1,3,5-trioxy-2,4-diphosphy-[5]catena
pyrophosphate TMS4
Oxy-1,1-diphosphonic acid
NCIStruc1_000506
NCIStruc2_000426
(phosphonooxy)phosphonic acid
GTPL3151
CHEMBL1160571
DTXCID4037118
PYROPHOSPHORIC ACID [MI]
NCI56751
Pyrophosphoric acid, technical grade
BDBM50147591
CCG-37688
NCGC00013687
NSC289196
PYROPHOSPHORIC ACID [WHO-DD]
AKOS015856732
DB04160
NSC-289196
NCGC00013687-02
NCGC00013687-03
NCGC00096798-01
NCI60_004388
CS-0030756
NS00013536
C00013
P00025
Pyrophosphoric acid, SAJ first grade, >=90.0%
L000488
Q411092
Pyrophosphoric acid, Vetec(TM) reagent grade, 94%
2CB62164-1ACF-40BE-BF6A-880D0A00850A
219-574-0