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Sodium hydroxymethylarsinate

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Identification
Molecular formula
CH4AsNaO3
CAS number
2163-49-1
IUPAC name
sodium;hydroxy(methyl)arsinate
State
State

Sodium hydroxymethylarsinate is a solid at room temperature, usually found in granular or powder form.

Melting point (Celsius)
183.00
Melting point (Kelvin)
456.15
Boiling point (Celsius)
264.00
Boiling point (Kelvin)
537.15
General information
Molecular weight
174.96g/mol
Molar mass
174.9600g/mol
Density
1.8700g/cm3
Appearence

Sodium hydroxymethylarsinate typically appears as a solid material. It may be encountered as a crystalline powder with specific granularity depending on its preparation method.

Comment on solubility

Solubility of Sodium Hydroxy(methyl)arsinate

Sodium hydroxy(methyl)arsinate, with the chemical formula Na2HAsO3·2H2O, exhibits interesting solubility characteristics. This compound is known for its relatively high solubility in water, which plays a significant role in its applications, especially in agricultural and biochemical contexts.

Key Points About Solubility:

  • Water Solubility: Sodium hydroxy(methyl)arsinate readily dissolves in water, producing a clear solution, making it effective in formulations for delivering arsenic in soluble form.
  • pH Dependence: The solubility can vary depending on the pH of the solution; it tends to dissolve better in basic to neutral conditions.
  • Interaction with Other Ions: The presence of other ions or compounds in solution can affect its solubility, potentially leading to precipitation under certain conditions.
  • Limited Solubility in Organic Solvents: Generally, this compound is not soluble in organic solvents, which limits its use in organic synthesis.

In practical applications, the high water solubility of sodium hydroxy(methyl)arsinate is beneficial for its bioavailability and effectiveness. As with any arsenic-containing compound, however, caution is advised due to potential toxicity and environmental concerns. Always consider environmental regulations and safety practices when handling this compound.

Interesting facts

Interesting Facts about Sodium Hydroxy(methyl)arsinate

Sodium hydroxy(methyl)arsinate, commonly known in some circles as a key organic arsenical compound, is a fascinating chemical with several noteworthy attributes:

  • Historical Significance: This compound has roots in its use as a pesticide and herbicide, particularly in the mid-20th century, showcasing its relevance in agricultural chemistry.
  • Functional Group: The presence of both hydroxyl and methyl groups attached to arsenic makes this compound particularly interesting, as it leads to unique reactivity and interactions within biological systems.
  • Biocidal Properties: Sodium hydroxy(methyl)arsinate is known for its biocidal properties, making it an effective agent in controlling various pests and weeds, although its use has diminished due to safety and environmental concerns.
  • Environmental Impact: As an arsenic-containing compound, studies have shown that sodium hydroxy(methyl)arsinate can pose risks to human health and the environment, leading to strict regulations in its application.
  • Analytical Methods: This compound's detection and quantification in environmental samples often involve sophisticated analytical techniques such as chromatography, highlighting its complexity and importance in environmental science.

In summary, sodium hydroxy(methyl)arsinate is not just a simple compound; its role in agriculture, potential health hazards, and analytical significance make it a captivating subject of study in both chemistry and environmental science. As the scientific community continues to uncover the intricacies of arsenic chemistry, understanding the implications of such compounds is crucial for future applications and regulations.