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Soap Making Calculated Formula

Calculated Soap



Calculated Soap Formula




Water – For the size of fat batch that you are using, we recommend that you use approximately 6 fluid ounces of liquid.

Warning:  Always add your solid form lye, sodium hydroxide or potassium hydroxide, to the liquid. If the liquid were added to the solid form lye a violent reaction could result. This means you could have a “volcano” erupt out of your container.

Fats and Oils:

4 oz. Coconut Oil     (25% in recipe)                           5 oz. Olive Oil          (31.25% in recipe)

6 oz. Palm Oil          (37.50% in recipe)                      1 oz. Cocoa Butter   (6.25% in recipe)

Total Weight: 16 Oz.

Lye Table (NaOH)

6% Excess Fat                    2.25 oz. Lye

5% to 8% excess fat range: This is the range most often used.

DISCLAIMER:  Every effort has been made to ensure that the information contained here is accurate. However due to differing conditions, tools, and individual skills we cannot guarantee the information is applicable in your situation. We are not responsible for any injuries, losses, or other damages that may result from the use of this information available here.

ALWAYS wear protective goggles, gloves and other safety clothing when handling sodium hydroxide or potassium hydroxide. Refer to the appropriate MSDS for complete details.

A Material Safety Data Sheet (MSDS) can be found at The Nanaimo Soap Exchange.


.25 oz. Lavender  (or any) Essential  Oil                   1 Tablespoon finely ground oatmeal

0.15 cc Purple  (or any) Colorant mixed into ½ fl oz. water, use 10 drops of this colorant mixture

Basic Soap Making Instructions:

     -While wearing safety goggles and neoprene gloves, combine solid lye and liquid - stir well.          Set aside to cool (100-125 Degrees F.) This is best done outside while standing upwind.

     -Combine oils and heat gently. Once the fats and oils are melted allow the temperature to drop to 100-125 Degrees F.

     -Combine lye solution and melted oils. Be careful not to splash while combining the mixtures. Stir until the mixture traces. If tracing takes more than 15 minutes, which it often does, stir for the first 15 minutes, then stir for 5 minutes at 15 minute intervals. Tracing looks like a slightly thickened custard, not instant pudding but a cooked custard. It will support a drop, or your stir marks for several seconds. Once tracing occurs…

     -Pour raw soap into your prepared molds. After a few days the soap can be turned out of the mold. If the soap is very soft, allow it to cure for a few days to firm the outside.

     -Cut soap into bars and set the bars out to cure and dry. This will allow the bar to firm and finish saponification. Place the bars on something that will allow them to breathe.

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