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- Q13001551 subject Q8756008.
- Q13001551 abstract "TFM (Total Fatty Matter) is one of the most important characteristics describing the quality of soap and it is always specified in commercial transactions. It is defined as the total amount of fatty matter, mostly fatty acids, that can be separated from a sample after splitting with mineral acid, usually hydrochloric acid. The fatty acids most commonly present in soap are oleic, stearic and palmitic acids and pure, dry, sodium oleate has TFM 92.8%, while top quality soap noodles now increasingly used for making soap tablets in small and medium size factories, are typically traded with a specification TFM 78% min., moisture 14% max. But besides moisture, finished commercial soap, especially laundry soap, also contains fillers used to lower its cost or confer special properties, plus emollients, preservatives, etc. and then the TFM can be as low as 50%. Fillers, which are usually dry powders, also make the soap harder, harsher on the skin and with greater tendency to become 'mushy' in water and so low TFM is usually associated with hardness and lower quality. In older days in Europe and in some countries now, soap with TFM 75% minimum was referred to as Grade 1 and 65% minimum as Grade 2 and less 60% grade 3 and greater than 60% and below than76% is grade1".
- Q13001551 wikiPageExternalLink soapmaking.htm.
- Q13001551 wikiPageExternalLink soapmakingcraf_reln.htm.
- Q13001551 wikiPageExternalLink www.teachsoap.com.
- Q13001551 wikiPageWikiLink Q207688.
- Q13001551 wikiPageWikiLink Q209685.
- Q13001551 wikiPageWikiLink Q209727.
- Q13001551 wikiPageWikiLink Q2409.
- Q13001551 wikiPageWikiLink Q274579.
- Q13001551 wikiPageWikiLink Q3006091.
- Q13001551 wikiPageWikiLink Q34396.
- Q13001551 wikiPageWikiLink Q408683.
- Q13001551 wikiPageWikiLink Q46.
- Q13001551 wikiPageWikiLink Q61476.
- Q13001551 wikiPageWikiLink Q8756008.
- Q13001551 wikiPageWikiLink Q905592.
- Q13001551 wikiPageWikiLink Q910284.
- Q13001551 comment "TFM (Total Fatty Matter) is one of the most important characteristics describing the quality of soap and it is always specified in commercial transactions. It is defined as the total amount of fatty matter, mostly fatty acids, that can be separated from a sample after splitting with mineral acid, usually hydrochloric acid.".
- Q13001551 label "Total fatty matter".