Soap

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Equipment

  • 2 Old pots - 2$
  • Digital Thermometer - 12$
  • Digital Scale - 28$
  • plastic containers - free - used containers from other stuff , yogurt, wood putty

Consumed

  • olive oil - 3 litre - 11$ - grocery store
  • lye ( sodium hydroxide - NaOH ) - 3kg - 22$ - hardware store

Unit notes

  • 1 ounce = 28.3495231 grams
  • convert KOH Sap value to NaOH Spa values by dividing by 1.403 ( it's the ratio of the molecular weights , see note below )

Recipes

Used http://www.soapcalc.net/calc/SoapCalcWP.asp for calculations

Roughly

fat + base ( NaOh or KOH ) = Fatty Acids + Glycerol i.e. soap

100% olive oil take 1

ingredients:

Ingredient Grams
Water 190
Lye - NaOH 66.381
Olive Oil 500
Total oil weight500
Water as percent of oil weight38 %
Super Fat/Discount2 %
Lye Concentration25.892 %
Water : Lye Ratio2.862:1
Sat : Unsat Ratio17 : 83
Iodine 85
INS 105
Fragrance Ratio0
Fragrance Weight 0 Gm
IngredientPoundsOuncesGrams
Water0.4196.702190
Lye - NaOH0.1462.34266.381
#Oil/Fat%PoundsOuncesGrams
1<input type='checkbox' disabled='disabled' />Olive Oil1001.10217.637500
  Totals1001.10217.637500
Soap Bar Quality Suggested Range Your Recipe
Hardness 29 - 54 17
Cleansing 12 - 22 0
Conditioning 44 - 69 82
Bubbly 14 - 46 0
Creamy 16 - 48 17
Iodine 41 - 70 85
INS 136 - 165 105


Lauric 0
Myristic 0
Palmitic 14
Stearic 3
Ricinoleic 0
Oleic 69
Linoleic 12
Linolenic 1

Resources

Handmade soap makers who aim for bar soap use NaOH (sodium hydroxide). Because saponification values are listed in KOH (potassium hydroxide) the value must be converted from potassium to sodium to make bar soap; potassium soaps make a paste, gel or liquid soap. To convert KOH values to NaOH values, divide the KOH values by the ratio of the molecular weights of KOH and NaOH (1.403).