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Saponification Chart

Our saponification values have been gathered primarily from our suppliers and product documentation. In some cases, we have relied upon outside sources. Certain SAP values will differ from those listed in other sources because SAP values can fall within a range of values acceptable for an oil/butter/lipid. The actual value will change depending on the origin of the lipid and what the weather conditions were for that particular plant material and processing techniques. In most cases we used an average of the range so that your soap will not come out lye heavy in the event that the actual SAP value was on the lower end of the range.

These numbers are actual SAP values expressed in the number of mg of KOH required to saponify 1 g of oil/fat. When reading a certificate of analysis of an oil/fat, the SAP Value will be listed in this way.

Most soapers prefer to convert these numbers when making soap to be able to calculate their lye easily. You will see these converted values listed as decimal values. They are derived from the actual SAP value and are not true SAP values.

Dividing the SAP value by 1000 gives us a ratio of KOH to Oil in the same units (mg), and therefore becomes the ratio of KOH needed for any unit, as long as you use the same units to measure your KOH and Oils. Example: An oil with an average SAP value of 190 will require 190/1000 = 0.190 g of KOH per g of oil, or 0.190 ounces of KOH per ounce of oil, or 0.190 pounds of KOH per pound of oil.

Dividing the SAP value by 1402.50 or multiplying the KOH ratio by 40/56.1 (the ratio of the molecular weights of NaOH/KOH), gives us the amount of NaOH required for any unit, as long as you use the same units to measure your NaOH and Oils. Example: An oil with an average SAP value of 190 will require 190/1402.50 = 0.135 g of NaOH per 1 g of oil, 0.135 ounces NaOH per ounce of oil, or 0.135 pounds of NaOH per pound of oil.


Summary:
To convert actual SAP Values into converted values ready to work with in any unit:

  • Solid Soap (NaOH): Divide the average SAP Value by 1402.50
  • Liquid Soap (KOH): Divide the average SAP Value by 1000


To download a tab delimited text copy of this chart, please click here.

Please let us know if you have any questions or would like us to add any SAP values.

Lipids SAP NAOH (oz.) KOH (oz.) INCI Name
Castor Oil 175 - 187 .127 .179 Ricinus communis (Castor) Seed Oil
Coconut Oil (76 degree) 250 - 264 .178 .252 Cocos nucifera (Coconut) Oil
Cranberry Seed Oil 192 0.135 0.190 Vaccinium Macrocarpon (Cranberry) Seed Oil
Emu Oil, Clear AEA Certified 185 - 200 0.135 0.191 Emu Oil
Flax Seed Oil 188 - 196 .135 .190 Linum usitatissimum (Linseed) Seed Oil
Hemp Seed Oil 190 - 195 .135 .191 Cannabis sativa (Hemp) Seed Oil
Hemp Seed Oil, Organic 190 - 195 .135 .191 Cannabis sativa (Hemp) Seed Oil
Jojoba, Clear 90 - 93 .064 .091 Simmondsia chinensis (Jojoba) Seed Oil
Karanja Oil 185 0.130 0.183 Pongamia Glabra (Karanja) Seed Oil
Kukui Nut Oil 185 - 195 0.135 0.190 Aleurites Moluccana (Kukui) Seed Oil
Macadamia Nut Oil 190 - 200 .137 .193 Macadamia (Macadamia ternifolia) Seed Oil
Manketti Oil 190 - 205 0.139 0.195 Schinziophyton rautanenii (Manketti) Oil
Olive Oil 184 - 196 .133 .188 Olea europaea (Olive) Fruit Oil
Organic Red Raspberry Seed Oil 188 0.132 0.186 Rubus Idaeus (Red Raspberry) Seed Oil
Perilla Oil 185 - 200 .135 .191 Perilla ocymoides (Perilla) Seed Oil
Pomace Olive Oil 189.7 .133 .188 Olea europaea (Olive) Fruit Oil
Sesame Oil 188-195 .135 .191 Sesamum indicum (Sesame) Seed Oil
Soybean Oil, Organic 190 0.134 0.188 Glycine soja (Soybean) Oil
Other Lipids SAP NAOH (oz.) KOH (oz.)  
Beef Tallow   .140 .196  
Canola Oil   .123 .173  
Corn Oil   .135 .190  
Cottonseed Oil   .137 .192  
Deer Tallow   .139 .1946  
Goat Tallow   .139 .1946  
Lard   .138 .1932  
Mustard Oil   .122 .172  
Niger-Seed Oil   .135 .1890  
Peanut Oil   .135 .190  
Poppyseed Oil   .136 .192  
Rapeseed Oil   .124 .175  
Shortening, Vegetable   .136 .1904  

 

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