An improved method for determining the water number for surfactants

Area of Science:

• Colloid and Surface Chemistry
• Green Chemistry

Background:

• Surfactants are vital in industry due to their amphipathic nature.
• The hydrophilic-lipophilic balance (HLB) value and water number characterize surfactant solubility and properties.
• Traditional water number determination methods use hazardous chemicals, limiting their use.

Purpose of the Study:

• To develop a safe and effective method for determining the water number of surfactants.
• To identify environmentally and biologically benign solvents for this analysis.
• To enhance the reliability of surfactant property assessment.

Main Methods:

• Development of a novel procedure for water number determination.
• Utilized a new combination of environmentally friendly solvents.
• Validated the improved method for accuracy and reproducibility.

Main Results:

• A straightforward method for determining surfactant water number was established.
• The new method successfully avoids the use of harmful auxiliary substances.
• Enhanced reliability in assessing surfactant hydrophilic properties was achieved.

Conclusions:

• The developed method offers a safer alternative for routine laboratory analysis.
• This approach facilitates a better understanding of surfactant behavior and applications.
• The findings support the adoption of greener analytical techniques in surfactant science.