Question I would like to know the procedure for the determination of total fatty matter in soaps?
Take a weighed sample of soap in a beaker. Dissolve it in a small quantity of water. Add a small quantity of conc. sulfuric acid & start to warm it till soap is converted to oil. Transfer this whole liquid in a separating funnel & allow to stand for about half an hour. Discard the lower layer of water completely. Give more two washes of boiling water in the same manner. Then add a small quantity of petroleum spirit in it & shake it vigorously after giving the stopper on open end(upper) of the separating funnel. Separate out lower layer in other separating funnel & repeat this process for about two times. After that drain this oily layer in a separate dried weighed beaker. The same process should be repeated with other separating funnel in which we have collected the lower layers. Collect the oily layer from that funnel into the same dried & weighed beaker.
Placed this beaker on the water bath till whole of the petroleum spirit is evaporated. Then further dried it in an oven. Weigh the oil in beaker & calculate the %age of oil, this will be TFM( Total Fatty Matters ) in %age.
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Total fatty matter in hair cream can be determined by using a method called the Soxhlet extraction method. In this method, the hair cream is dissolved in an organic solvent and placed in a thimble within a Soxhlet extractor. The solvent is heated, evaporated, and condensed to extract the fatty matter, which is then weighed to determine the total fatty content in the hair cream.
Total fatty matter in laundry soap is important for determining the cleaning and lathering abilities of the soap. A higher total fatty matter percentage indicates a more effective detergent for removing stains and dirt from clothes. It is also useful for understanding the overall quality and performance of the laundry soap.
TFM stands for Total Fatty Matter. It is a measure of the total amount of fatty matter, such as fatty acids and glycerol, present in a soap. A higher TFM value indicates a soap with more cleansing properties and less impurities. Santoor soap typically has a TFM value of around 60-75%.
Acetone is used in total fatty matter analysis because it can efficiently dissolve lipids and fats, making it easier to extract them from samples for analysis. Additionally, acetone is a volatile solvent, which allows for easy evaporation without leaving residue behind.
The TFM (Total Fatty Matter) of Cinthol soap can vary depending on the specific variant, but generally ranges between 60-75%. TFM is an indication of the amount of fatty matter present in the soap, which relates to its cleansing and moisturizing properties.
The Total Fatty Matter (TFM) of Dove soap is around 76%.