ISO 672: Determination of Moisture and Volatile Matter Content in Soaps

Soaps - Determination of Moisture and Volatile Matter Content - Baking Method

Soap, which is the basic material of daily cleaning, is frequently used. Soaps offered for consumer use undergo many quality tests. One of the tests performed on soaps is the “Soaps- Determination of moisture and volatile matter content - Baking method” within the scope of ISO 672 standard.

Quality control and standardization of soaps is an essential part of the production process. The ISO 672 standard defines methods for the determination of moisture and volatile matter content in soaps. These analyzes are the methods used to evaluate the performance, durability and long-term storage conditions of soaps.

Purpose of ISO 672 Standard

ISO 672 provides a standard method for determining the amount of water (moisture) and volatiles contained in soaps.

This analysis is done for the following reasons:

To evaluate the quality and shelf life of soap,
To ensure that the product complies with the standards,
Creating a control mechanism in the production process,
To examine the effects of moisture and volatile matter content on soap performance.

General Principle of ISO 672 Test Method

A sample of approximately 10 g is weighed to an accuracy of 0.01 g,
103 placed in an oven controlled at 2 °C,
Cooled in a desiccator and weighed again,
The procedure is repeated until the difference in mass between two successive weighings is less than 0.01 g.

Reasons for Determining Moisture Content in Soaps

It is primarily a parameter used to assess shelf life.
High moisture content in soap will cause excess water to react with unsaponified oil to give free fatty acids and glycerol in a process called hydrolysis of soap during storage. For this reason, it is tried to have information about moisture content.

Effect of Moisture and Volatiles on Soap Quality

Excess Moisture and Volatile Matter Content: May cause the soap to become soft and easily deformed. It can shorten shelf life and reduce product efficiency.
Low Moisture and Volatile Content: May increase the hardness of the soap and make it difficult to use. May lead to material loss during production.

Nanolab Laboratories Group continues to provide services within the scope of Moisture and Volatile Matter Content Determination in Soaps. We also provide services in Detergent Analysis.

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