Determination of Insoluble / Soluble Substance Amount in Ethanol (Alcohol)

The ISO 673 standard includes the test method for the determination of the content of ethanol-insoluble substances in commercial soaps. Substances insoluble in ethanol are as follows:

- Additives with low solubility or insoluble in 95% (V/V) ethanol added to soaps
- Foreign substances
- Alkali carbonates and chlorides
- Foreign matter can be inorganic (carbonates, borates, perborates, chlorides, sulfates, silicates, phosphates, iron oxides, etc.)
- Organic (starch, dextrins, caseins, sugars, cellulose derivatives, alginates, etc.).

The principle of Determination of Insoluble / Soluble Substance Amount in Ethanol (Alcohol) in Soap is based on dissolving the soap in ethanol, filtering it and weighing the undissolved residue.

ISO 673:Soaps — Determination of content of ethanol-insoluble matter

You can contact Nanolab Cosmetic Product Analysis Laboratory for Determination of Insoluble / Soluble Substance Amount in Ethanol (Alcohol) in Soap.