The saponification value for a specific fat will vary by season and by specimen species.
2.
The saponification value must be converted into an equivalent sodium hydroxide value for use in cold process soapmaking.
3.
Oil specification sheets contain laboratory test results for each fat, including the precise saponification value of the fat.
4.
A cold-process soapmaker first looks up the saponification value for each unique fat on an oil specification sheet.
5.
The saponification value is lower ( 3 5 ) for European beeswax, and higher ( 8 9 ) for Oriental types.
6.
Most soap makers formulate their recipes with a 2 5 % deficit of lye, to account for the unknown deviation of saponification value between their oil batch and laboratory averages.
7.
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.
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