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Find FFA by titration

-find caustic amount by using formula: (FFA/100)*weight of oil/7.05

-dissolve caustic in water(more is better)

-heat caustic and oil to 80C

-carefully pour caustic water into oil with little to no adjatation, allowing a soap layer to form

-allow soaps to settle

-tap soap/water layer

-heat oil to 110C

-add 2-3% bleaching clay and mix for 15 min

-filter

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13y ago

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