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Sodium Nitrite

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Identification
Molecular formula
NaNO2
CAS number
7632-00-0
IUPAC name
sodium;nitrite
State
State

At room temperature, sodium nitrite is typically found as a solid in the form of a crystalline powder.

Melting point (Celsius)
271.00
Melting point (Kelvin)
544.00
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
69.00g/mol
Molar mass
69.0000g/mol
Density
2.1680g/cm3
Appearence

Sodium nitrite appears as a white to slightly yellowish crystalline powder.

Comment on solubility

Solubility of Sodium Nitrite

Sodium nitrite (NaNO2) is known for its excellent solubility in water, making it a versatile component in various chemical applications. Here are some key points regarding its solubility:

  • High Solubility: Sodium nitrite readily dissolves in water, with a solubility of approximately 90 grams per liter at 20 °C.
  • Temperature Dependence: The solubility of sodium nitrite increases with temperature, which means it becomes even more soluble in hot water compared to cold water.
  • Polar Nature: The compound's ionic and polar characteristics allow it to interact favorably with water molecules, facilitating the dissolution process.

In summary, sodium nitrite's remarkable water solubility, especially at elevated temperatures, makes it an important compound in various industrial and laboratory settings. As it dissolves, it dissociates into sodium ions (Na+) and nitrite ions (NO2-), contributing to its functionality in numerous chemical reactions.

Interesting facts

Interesting Facts about Sodium Nitrite

Sodium nitrite is a fascinating chemical compound with a myriad of applications and properties that intrigue chemists and industry professionals alike. Here are some noteworthy aspects of this compound:

  • Preservative Power: Sodium nitrite is best known for its role as a food preservative, particularly in cured meats. It helps prevent the growth of harmful bacteria like Clostridium botulinum, which can cause botulism, ensuring food safety.
  • Color Enhancement: The compound is responsible for the attractive pink-red color of cured meats, making products like bacon and hot dogs visually appealing to consumers.
  • pH Neutralization: Sodium nitrite can help stabilize the pH in various chemical processes, promoting consistency and efficiency in manufacturing.

The Chemistry Behind Sodium Nitrite

Sodium nitrite's molecular structure contributes to its unique properties and functions:

  • Oxidizing Agent: As an oxidizing agent, sodium nitrite can facilitate various chemical reactions, including the synthesis of aromatic compounds.
  • Complex Formation: It commonly forms complexes with several metal ions, aiding in various catalytic processes.
  • Temperature Sensitivity: It displays distinctive behavior when heated, leading to the production of nitrogen oxides, which are essential in various industrial applications.

Despite its benefits, it's important to note that sodium nitrite should be used responsibly due to potential health risks associated with excessive consumption.

Fun Fact:

Many people may not realize that sodium nitrite is also employed in the **leather** and **textile industries** as a dye fixative, showcasing its versatility beyond the culinary world!

In summary, sodium nitrite is a compound that beautifully illustrates the intersection of chemistry, safety, and visual appeal in food science and industry.