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Cacodylate

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Identification
Molecular formula
CH3AsO2Na
CAS number
124-65-2
IUPAC name
sodium;dimethylarsinate
State
State

At room temperature, cacodylate is in a solid state. It is most commonly encountered as a powder or crystalline solid.

Melting point (Celsius)
138.00
Melting point (Kelvin)
411.15
Boiling point (Celsius)
249.00
Boiling point (Kelvin)
522.15
General information
Molecular weight
138.02g/mol
Molar mass
138.0220g/mol
Density
1.5400g/cm3
Appearence

Cacodylate typically appears as a white crystalline solid. The compound can also present as a colorless to white powder, depending on its specific form and purity. It is generally stable under typical storage conditions.

Comment on solubility

Solubility of Sodium Dimethylarsinate

Sodium dimethylarsinate, with the chemical formula NaC2H8AsO2, exhibits interesting solubility characteristics that are worth exploring. The solubility of this compound can be influenced by several factors:

  • Water Solubility: Sodium dimethylarsinate tends to be highly soluble in water. This property is primarily due to the presence of the sodium ion (Na+), which promotes solvation.
  • pH Levels: The solubility can be affected by the pH of the solution. Under acidic conditions, the compound is likely to remain more soluble.
  • Temperature Influence: Like many salts, an increase in temperature generally enhances the solubility of sodium dimethylarsinate in water.
  • Common Ions Effect: The introduction of competing cations or anions can lead to precipitation or reduced solubility.

In conclusion, the solubility dynamics of sodium dimethylarsinate are primarily governed by its ionic nature, external pH conditions, temperature, and the presence of other ions in solution. This makes it a compound of interest when studying arsenic species in environmental chemistry or toxicology.

Interesting facts

Interesting Facts About Sodium Dimethylarsinate

Sodium dimethylarsinate is a remarkable compound that has garnered attention in various fields, particularly in environmental science and chemistry. Here are some key points that highlight its significance:

  • Arsenical Compound: Sodium dimethylarsinate is an organoarsenic compound, where arsenic is present in a more complex form than in inorganic arsenic compounds. This structure can have different properties and reactions.
  • Applications in Agriculture: It is sometimes used as a herbicide and fungicide. Its unique structure helps it modulate the growth of certain plants and control unwanted organisms.
  • Toxicity Considerations: Like many arsenic compounds, careful handling is essential. Sodium dimethylarsinate poses health risks if mishandled, reminding scientists of the importance of safety and regulation in chemical use.
  • Research Utility: In the lab, sodium dimethylarsinate can be used to study the behavior of arsenic in biological systems, providing insights into its environmental impact and metabolism in organisms.
  • Analytical Chemistry: Analytical methods often employ this compound to trace arsenic's presence in environmental samples, showcasing its role in monitoring pollution levels.

In summary, sodium dimethylarsinate is not just a compound with theoretical interest; it bridges chemistry, agriculture, and environmental sciences. Its dual nature as both a useful agent and a substance that requires caution emphasizes the delicate balance in handling chemical compounds responsibly.