is the number of milligrams of potassium hydroxide (KOH)
that combines with 1 gram of oil under conditions specified by test method
ASTM-D-94. Saponification number is an
indication of the amount of fatty saponifiable material in a
compounded oil. Caution must be used in
interpreting test results if certain substances — such as
sulfur compounds or
halogens — are present in the oil, since these also react with KOH,
thereby increasing the apparent saponification number.
Application
Notes:
