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Hydrogen phosphonate

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Identification
Molecular formula
H3PO3
CAS number
993-13-5
IUPAC name
Hydrogen phosphonate
State
State

Hydrogen phosphonate is commonly found in a solid state at room temperature. In its stable form, it is generally in powder or crystalline form, and it forms crystals that are characteristically white.

Melting point (Celsius)
70.00
Melting point (Kelvin)
343.15
Boiling point (Celsius)
232.00
Boiling point (Kelvin)
505.15
General information
Molecular weight
81.98g/mol
Molar mass
81.9760g/mol
Density
1.6530g/cm3
Appearence

Hydrogen phosphonate typically appears as a white crystalline solid. It may also possess a colorless appearance depending on the level of purity and specific conditions in which it is found. As a solid, it might seem to have a powder-like texture when observed in its common form.

Comment on solubility

Solubility of Hydrogen Phosphonate (H3PO3)

Hydrogen phosphonate, or phosphorous acid, is known for its interesting solubility characteristics. Here’s a breakdown of its solubility:

  • Water Solubility: Hydrogen phosphonate is highly soluble in water due to the polar nature of its molecular structure. This high solubility is attributed to its ability to form hydrogen bonds with water molecules.
  • Solvent Interaction: The compound exhibits significant solubility in polar solvents. In particular, it is less soluble in organic solvents, such as alcohols and ethers, due to the non-polar characteristics of these solvents.
  • pH Effects: The solubility of H3PO3 can also be influenced by the pH of the solution. It is more soluble in acidic conditions, which can enhance its ionization.

In summary, the solubility of hydrogen phosphonate is a key factor in its chemical behavior, impacting its application in various chemical reactions and industrial processes. As a practical takeaway, one might say: "In water you prevail, but in non-polar realms, you sometimes pale."

Interesting facts

Interesting Facts about Hydrogen Phosphonate

Hydrogen phosphonate, also known as phosphorous acid, is a fascinating compound with intriguing properties and uses. Here are some interesting facts about this important chemical:

  • Chemical Structure: Hydrogen phosphonate contains a phosphorus atom bonded to three hydrogen atoms and one phosphate group, giving it unique biochemical activity.
  • Brønsted Acid: As a Brønsted acid, hydrogen phosphonate can donate protons to bases, which plays a vital role in various acid-base reactions.
  • Role in Agriculture: It is commonly used in fertilizers to improve crop yields. The compound acts as a source of phosphorus, an essential nutrient for plants.
  • Antimicrobial Properties: Hydrogen phosphonate has demonstrated significant antimicrobial properties, making it useful in agricultural practices to control plant diseases.
  • Phosphonates vs. Phosphates: It’s essential to distinguish between phosphonates and phosphates; while both contain phosphorus, phosphonates have unique stability and reactivity in environmental and biological systems.
  • Industrial Uses: Beyond agriculture, hydrogen phosphonate is also utilized in the production of flame retardants and certain chemical processes in organic synthesis.
  • Environmental Consideration: The compound's safety profile is considered, particularly regarding its environmental impact and the potential for accumulation in ecosystems.

As we delve deeper into the study of hydrogen phosphonate, we uncover its vital role in chemistry, agriculture, and industry, illustrating the compound's significance across various domains.