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Sodium salicylate

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Identification
Molecular formula
C7H5NaO3
CAS number
54-21-7
IUPAC name
sodium;2-hydroxybenzoate
State
State

At room temperature, sodium salicylate is typically in a solid state as a crystalline powder. It is hygroscopic, absorbing moisture from the air, and is soluble in water.

Melting point (Celsius)
200.00
Melting point (Kelvin)
473.15
Boiling point (Celsius)
211.00
Boiling point (Kelvin)
484.15
General information
Molecular weight
160.11g/mol
Molar mass
160.1050g/mol
Density
1.4400g/cm3
Appearence

Sodium salicylate commonly appears as a white crystalline powder. It is known for being less commonly in solution form, where it may appear as a clear liquid. It is typically odorless or possesses a slight aromatic odor characteristic of salicylates.

Comment on solubility

Solubility of Sodium 2-Hydroxybenzoate (C7H5NaO3)

Sodium 2-hydroxybenzoate, commonly known as sodium salicylate, shows interesting solubility characteristics that are important in various applications. It is generally recognized as:

  • Highly soluble in water: Sodium 2-hydroxybenzoate readily dissolves in aqueous solutions, making it useful in pharmaceutical formulations.
  • Solubility affected by pH: The solubility can vary depending on the pH of the solution; as pH increases, solubility is typically enhanced due to the ionization of the compound.
  • Not soluble in organic solvents: Compared to its solubility in water, it exhibits very low solubility in organic solvents such as ethanol and chloroform.

Overall, the presence of the sodium ion and the carboxylate group supports its solubility in water, allowing it to function effectively in various chemical environments. As stated, "The greater the polarity of a compound, the greater its solubility in polar solvents," which perfectly applies to sodium 2-hydroxybenzoate.

Interesting facts

Interesting Facts about Sodium 2-Hydroxybenzoate

Sodium 2-hydroxybenzoate, commonly known as sodium salicylate, is a fascinating compound with a range of applications and properties. Here are some interesting insights into this compound:

  • Chemical Family: This compound belongs to the salicylate family, which consists of compounds derived from salicylic acid, a naturally occurring compound found in various plants.
  • Pharmaceutical Uses: Sodium 2-hydroxybenzoate is frequently used in pharmaceuticals for its anti-inflammatory and analgesic properties. It can be an effective treatment option for conditions like arthritis or muscle pain.
  • Preservative Role: It is also utilized as a preservative in the food industry due to its ability to inhibit the growth of certain bacteria and fungi, thereby helping to prolong the shelf-life of products.
  • pH Buffering: In laboratory settings, sodium 2-hydroxybenzoate can act as a buffering agent. This quality is essential for maintaining stable pH levels during various chemical reactions.
  • Natural Origins: The compound can be derived from the natural source of willow bark, which has been used for centuries in traditional medicine. This highlights its long-standing role in both historical and modern therapeutics.
  • Environmental Considerations: As a biodegradable compound, sodium 2-hydroxybenzoate presents a more eco-friendly option compared to some synthetic alternatives, making it a preferred choice in formulations aiming for sustainability.

In conclusion, sodium 2-hydroxybenzoate is not just a simple compound; it has a rich history and a significant impact across various fields, from medicine to environmental science. As scientists and students explore its various applications, the potential for new discoveries and innovations with this versatile compound continues to grow.