Determination of Non-Saponifiable, Unsaponifiable and Saponifiable Substances: ISO 1067

ISO 1067 - Soap - Determination of Non-Saponifiable, Saponified and Saponifiable Substance

What is Saponification?

Saponification is a chemical process in which fat and fatty acids react with an alkali to form soap and glycerol. The degree of saponification is a critical parameter for determining the properties and purity of an oil or oil derivative.

• Saponifiable Substances: Fatty acids or esters that completely form soap with alkali.
• Non-Saponifiable Substances: Components that do not undergo changes in the saponification process (e.g. sterols, hydrocarbons).
• Unsaponifiable Substances: Compounds that retain their chemical structure and do not react during processing.

Purpose of ISO 1067 Standard

The ISO 1067 standard aims to determine the amount of unsaponifiable substances in the content of oils. This analysis is very important when assessing the purity level and quality characteristics of the oil. The ISO 1067 standard covers a method for the determination of unsaponifiable, unsaponified and saponifiable contents. This method within the scope of the standard applies to the determination of the contents of products other than free fatty acids, soluble in hexane or light petroleum (unsaponifiable + unsaponifiable substance) and saponifiable (unsaponifiable saponifiable substance). The method is not applicable to soaps enriched with sterols or long-chain alcohols or to soaps containing perfumes.

The principle of the test method is the extraction of the substance dissolved in hexane and titration of the free fatty acids separated by potassium hydroxide solution. The result is obtained by saponification of the products dissolved in hexane neutralized in this way and extraction of the unsaponifiable substance with hexane.

Application Areas:

1. Food Sector: Determination of the quality of vegetable oils.
2. Cosmetics Sector: Checking the purity of oils used in skin care products.
3. Chemical Sector: Analysis of the properties of industrial oils.

Importance of Analysis of Unsaponifiable Substances

• Quality Control: The proportion of unsaponifiable matter in the oils indicates the degree of purity and processing.
• Product Stability: Unsaponifiables play an important role in the shelf life and stability of products.
• Verification of Raw Materials: Checks whether the raw materials have the expected properties

Conclusion and Evaluation

The ISO 1067 standard provides a reliable method for the analysis of unsaponifiable and saponifiable substances in oils. This analysis plays a critical role in quality control processes and verification of product properties.

In a nutshell:

• Quality Management: Guarantees the purity and stability of oils.
• Legal Compliance: Ensures that products comply with international standards.
• Sustainability: Supports more effective use of natural oils.

With test methods in accordance with ISO 1067, accurate and reliable results can be obtained for sectoral needs.

Nanolab Laboratories Group continues to provide services within the scope of Non-Saponifiable, Unsaponifiable and Saponifiable Substance Determination. We also provide services in Detergent Analysis.

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