What is the Difference Between Sodium Stearate and Sodium Oleate?

Sodium stearate and sodium oleate are sodium salts of two different acidic compounds. The key difference between them lies in the type of acid they are derived from:

• Sodium Stearate: This is the sodium salt of stearic acid, which has the chemical formula C18H35NaO2.
• Sodium Oleate: This is the sodium salt of oleic acid.

Both compounds have different chemical and physical properties due to their distinct structures. Some applications of these compounds include:

• Sodium Stearate: It is commonly used in the production of soap and as a component of some shampoos and cosmetics.
• Sodium Oleate: In the food industry, it is used as a stabilizer or as a thickener.

In a study comparing the effectiveness of sodium stearate and sodium oleate as drag-reducing agents (DRA) in water pipeline systems, sodium stearate showed a better ability to reduce pressure drop and increase flow rate compared to sodium oleate at different concentrations.

Comparative Table: Sodium Stearate vs Sodium Oleate

Here is a table comparing the differences between sodium stearate and sodium oleate:

Sodium stearate is the sodium salt of stearic acid, while sodium oleate is the sodium salt of oleic acid. Sodium stearate appears as a white solid with a slight, tallow-like odor, and it is commonly used as a soap. In a study comparing the effectiveness of sodium stearate and sodium oleate as drag-reducing agents in a water injection system, sodium stearate showed better performance.